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Science Finals Review

Total questions: 181

Worksheet time: 2hrs 32mins

Name
Class
Date
1.

Beaker-

a)

Container for chemicals, measures volume

b)

Provides an approximate measurement of a liquid’s volume in liters or millimeters.

c)

Used to measure the mass of an object in grams (Beam 1- 1 gram units, 2- 10 gram units, 3- 100 gram units)

d)

A preserved organism or object used for research and observation

2.

Graduated Cylinder-

a)

Helps to cut observe, transfer, and examine biological specimens (includes probe, scissors, scalpel, tweezers, pins, and ruler)

b)

Measures temperature in Celsius of liquids or solids

c)

Used to heat chemicals or other lab objects

d)

- Measure the volume of liquid in mL, the liquid is measured at the meniscus

3.

Flask

a)

Container for chemicals, measures volume

b)

Measures temperature in Celsius of liquids or solids

c)

- Used to heat chemicals or other lab objects

d)

Used to transfer a small amount of liquid volume by squeezing and releasing the bulb

4.

Test Tube-

a)

A glass tube used to hold chemicals that can be heated and mixed within the test tube

b)

- Measures temperature in Celsius of liquids or solids

c)

Used to transfer a small amount of liquid volume by squeezing and releasing the bulb

d)

- Allows the growth and observation of organisms

5.

Test Tube Clamp-

a)

- Zooms in on an object for closer observation

b)

Used to hold the test tube and is used when the tube contains dangerous chemicals

c)

 Measures temperature in Celsius of liquids or solids

d)

Used to measure the mass of an object in grams (Beam 1- 1 gram units, 2- 10 gram units, 3- 100 gram units)

6.

Petri Dish

a)

Makes objects look bigger for observation

b)

A preserved organism or object used for research and observation

c)

Allows the growth and observation of organisms

d)

Zooms in on an object for closer observation

7.

Hot Plate-

a)

Used to heat chemicals or other lab objects

b)

- Zooms in on an object for closer observation

c)

Allows the growth and observation of organisms

d)

Provides an approximate measurement of a liquid’s volume in liters or millimeters.

8.

Thermometer

a)

- Makes objects look bigger for observation

b)

Helps to cut observe, transfer, and examine biological specimens (includes probe, scissors, scalpel, tweezers, pins, and ruler)

c)

Allows the growth and observation of organisms

d)

- Measures temperature in Celsius of liquids or solids

9.

Microscope-

a)

Used to transfer a small amount of liquid volume by squeezing and releasing the bulb

b)

Uses lenses to magnify small objects for observation

c)

 Used to measure the mass of an object in grams (Beam 1- 1 gram units, 2- 10 gram units, 3- 100 gram units)

d)

Used to heat chemicals or other lab objects

10.

Stereoscope-

a)

Zooms in on an object for closer observation

b)

ed to heat chemicals or other lab objects

c)

Used to hold the test tube and is used when the tube contains dangerous chemicals

d)

Measure the volume of liquid in mL, the liquid is measured at the meniscus

11.

Hand Lens

a)

- Used to measure the mass of an object in grams (Beam 1- 1 gram units, 2- 10 gram units, 3- 100 gram units)

b)

Measure the volume of liquid in mL, the liquid is measured at the meniscus

c)

Makes objects look bigger for observation

d)

A glass tube used to hold chemicals that can be heated and mixed within the test tube

12.

Eyedropper

a)

Helps to cut observe, transfer, and examine biological specimens (includes probe, scissors, scalpel, tweezers, pins, and ruler)

b)

Container for chemicals, measures volume

c)

 Provides an approximate measurement of a liquid’s volume in liters or millimeters.

d)

Used to transfer a small amount of liquid volume by squeezing and releasing the bulb

13.

Dissecting Equipment-

a)

A preserved organism or object used for research and observation

b)

Used to measure the mass of an object in grams (Beam 1- 1 gram units, 2- 10 gram units, 3- 100 gram units)

c)

- Helps to cut observe, transfer, and examine biological specimens (includes probe, scissors, scalpel, tweezers, pins, and ruler)

d)

Allows the growth and observation of organisms

14.

Triple Beam Balance-

a)

Makes objects look bigger for observation

b)

- Used to measure the mass of an object in grams

c)

Uses lenses to magnify small objects for observation

d)

 Used to heat chemicals or other lab objects

15.

Biological Specimen-

a)

A preserved organism or object used for research and observation

b)

sed to hold the test tube and is used when the tube contains dangerous chemicals

c)

Provides an approximate measurement of a liquid’s volume in liters or millimeters.

d)

Container for chemicals, measures volume

16.

Observation

a)

Characteristics that can be measured or counted.

b)

using our senses to study the world

c)

a condition that is manipulated, or changed, by a scientist.

d)

a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence

17.

Data

a)

a condition that is manipulated, or changed, by a scientist.

b)

the conditions that don’t change during an experiment

c)

Recorded observations.

d)

a proposed answer for a scientific question

18.

Qualitative Data

a)

Descriptions of a phenomenon

b)

When scientists study factors called independent variables and dependent variables to find cause-and-effect relationships

c)

Characteristics that can be measured or counted.

d)

a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence

19.

Quantative Data:

a)

 a proposed answer for a scientific question

b)

Descriptions of a phenomenon

c)

Characteristics that can be measured or counted.

d)

- using our senses to study the world

20.

Hypothesis-

a)

- a condition that is manipulated, or changed, by a scientist.

b)

- a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence

c)

e conditions that don’t change during an experiment

d)

a proposed answer for a scientific question

21.

Experiments-

a)

condition that is manipulated, or changed, by a scientist.

b)

When scientists study factors called independent variables and dependent variables to find cause-and-effect relationships

c)

a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence

d)

Recorded observations

22.

Independent Variable

a)

- a condition that is manipulated, or changed, by a scientist.

b)

the experimental data that is observed and measured during an experiment

c)

the conditions that don’t change during an experiment

d)

a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence

23.

Dependent Variable-

a)

the conditions that don’t change during an experiment

b)

- a condition that is manipulated, or changed, by a scientist

c)

the experimental data that is observed and measured during an experiment

d)

a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence

24.

Constants

a)

the conditions that don’t change during an experiment

b)

Characteristics that can be measured or counted.

c)

When scientists study factors called independent variables and dependent variables to find cause-and-effect relationships

d)

a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence

25.

Theory

a)

- the conditions that don’t change during an experiment

b)

a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence

c)

Descriptions of a phenomenon

d)

- a proposed answer for a scientific question

26.

What are the building blocks of life

a)

Small subunits called monomers

b)

Fats, Oils, and Cholesterols.

c)

Carbon is the basis of most molecules that make up all living things.

d)

Four unpaired electrons

27.

How many electrons does carbon have in its outer ring?

a)

4

b)

2

c)

1

d)

3

28.

How many general types of structures do carbon-based molecules have?

a)

Three; straight chain, branched chain, ring

b)

two; straight chain, branched chain

c)

one; ring

d)

none

29.

What are carbon based molecules made up of?

a)

A large molecule made of monomers bonded together

b)

Molecules composed of carbon, hydrogen, and oxygen

c)

Small subunits called monomers

d)

Carbohydrates, Lipids, Proteins, and Nucleic Acids

30.

What is a polymer

a)

Small subunits called monomers

b)

Molecules composed of carbon, hydrogen, and oxygen (sugar and starches) that can be broken down to provide a source of usable chemical energy for cells

c)

The most basic type of a carbohydrate called simple sugar

d)

A large molecule made of monomers bonded together

31.

What four types of carbon-based molecules are there?

a)

Carbohydrates, Lipids, Proteins

b)

Carbohydrates, Lipids, Proteins, and Nucleic Acids

c)

Lipids, Proteins, and Nucleic Acids

d)

Nucleic Acids

32.

What are carbohydrates?

a)

Molecules composed of carbon, hydrogen, and oxygen (sugar and starches) that can be broken down to provide a source of usable chemical energy for cells

b)

Fats, Oils, and Cholesterols. They are nonpolar molecules (don’t dissolve in water) and are made up of chains of Carbon, Hydrogen, and Oxygen. Can be used as a source of energy for cells.

c)

Carbon is the basis of most molecules that make up all living things.

d)

Polymers of amino acids (amino acids contain C, H, O, N, and S)

33.

What is the letter combination for glucose?

a)

C6 H12 O6

b)

C7 H12 O6

c)

C6 H12 O9

d)

C6 H18 O6

34.

What is a monosaccharide?

a)

Two simple sugars bonded together (aka table sugar)

b)

Starches (made and stored by plants), Glycogen (made and stored in animals), Cellulose (makes up the strong plant cell walls)

c)

The most basic type of a carbohydrate called simple sugar

d)

any glucose molecules that are linked together

35.

What are disaccharides?

a)

any glucose molecules that are linked together

b)

The most basic type of a carbohydrate called simple sugar

c)

Two simple sugars bonded together (aka table sugar)

d)

? 3 fatty acids bonded to glycerol

36.

What are polysaccharides?

a)

Two simple sugars bonded together (aka table sugar)

b)

 Many glucose molecules that are linked together

c)

Animal Fats

d)

The most basic type of a carbohydrate called simple sugar

37.

What are the types of carbohydrates?

a)

Starches (made and stored by plants), Glycogen (made and stored in animals), Cellulose (makes up the strong plant cell walls)

b)

Starches (made and stored by plants)

c)

Starches (made and stored by plants), Glycogen (made and stored in animals)

d)

none

38.

What are lipids?

a)

Contain detailed instruction to build proteins.

b)

Molecules composed of carbon, hydrogen, and oxygen (sugar and starches) that can be broken down to provide a source of usable chemical energy for cells

c)

Fats, Oils, and Cholesterols. They are nonpolar molecules (don’t dissolve in water) and are made up of chains of Carbon, Hydrogen, and Oxygen. Can be used as a source of energy for cells.

d)

Polymers of amino acids (amino acids contain C, H, O, N, and S)

39.

How are lipids a part of cell structure?

a)

They form cell membranes. Their head is a polar phosphate, their tail is a nonpolar fatty acid

b)

It is a part of cell membranes and is used by your body to make chemicals called steroid hormones

c)

3 fatty acids bonded to glycerol

d)

 They store a large amount of chemical energy in organisms.

40.

What are fatty acids?

a)

Chains of carbon atoms bonded to Hydrogen atoms. Fats and oils contain these fatty acids bonded to glycerol.

b)

3 fatty acids bonded to glycerol

c)

Oils

d)

They link amino acids together into chains called polypeptides

41.

What is a triglyceride?

a)

 DNA (stores genetic information) and RNA (builds proteins)

b)

Oils

c)

3 fatty acids bonded to glycerol

d)

? Animal Fats

42.

What are saturated fats?

a)

Two simple sugars bonded together (aka table sugar)

b)

Animal Fats

c)

 Oils

d)

Monomers called nucleotides

43.

What are unsaturated fats

a)

Discovered plant cells

b)

 They form cell membranes. Their head is a polar phosphate, their tail is a nonpolar fatty acid

c)

 They form covalent bonds with each other

d)

 Oils

44.

What are phospholipids?

a)

They form cell membranes. Their head is a polar phosphate, their tail is a nonpolar fatty acid

b)

It is a part of cell membranes and is used by your body to make chemicals called steroid hormones

c)

Fats, Oils, and Cholesterols. They are nonpolar molecules (don’t dissolve in water) and are made up of chains of Carbon, Hydrogen, and Oxygen. Can be used as a source of energy for cells.

d)

Chains of carbon atoms bonded to Hydrogen atoms. Fats and oils contain these fatty acids bonded to glycerol.

45.

What is cholesterol?

a)

Monomers called nucleotides

b)

Contain detailed instruction to build proteins

c)

DNA (stores genetic information) and RNA (builds proteins)

d)

It is a part of cell membranes and is used by your body to make chemicals called steroid hormones

46.

What are proteins?

a)

Contain detailed instruction to build proteins.

b)

C6 H12 O6)

c)

Polymers of amino acids (amino acids contain C, H, O, N, and S)

d)

Fats, Oils, and Cholesterols.

47.

What do amino acids form?

a)

DNA (stores genetic information) and RNA (builds proteins)

b)

covalent bonds with each other

c)

They link amino acids together into chains called polypeptides

d)

Monomers called nucleotides

48.

What are peptide bonds?

a)

They link amino acids together into chains called polypeptides

b)

It is a part of cell membranes and is used by your body to make chemicals called steroid hormones

c)

 

They form covalent bonds with each other

d)

olymers of amino acids (amino acids contain C, H, O, N, and S)

49.

What are nucleic acids?

a)

Discovered plant cells

b)

They form covalent bonds with each other

c)

Contain detailed instruction to build proteins.

d)

Polymers of amino acids (amino acids contain C, H, O, N, and S)

50.

What are polymers made up of?

a)

Monomers called nucleotides

b)

- Cells come from other cells

c)

Contain detailed instruction to build proteins.

d)

They form covalent bonds with each other

51.

What are nucleotides?

a)

hey form cell membranes. Their head is a polar phosphate, their tail is a nonpolar fatty acid

b)

ers of amino acids (amino acids contain C, H, O, N, and S)

c)

They link amino acids together into chains called polypeptides

d)

Composed of deoxyribose (sugar), a phosphate group, and a nitrogen base

52.

What are the two types of nucleic acids?

a)

Chains of carbon atoms bonded to Hydrogen atoms. Fats and oils contain these fatty acids bonded to glycerol.

b)

DNA (stores genetic information) and RNA (builds proteins)

c)

3 fatty acids bonded to glycerol

d)

They link amino acids together into chains called polypeptides

53.

Named the “rooms” he saw inside of a cork slice “cells”

a)

1839: Schwann

b)

1674: Anton von Leeuwenhoek-

c)

1838: Schleiden

d)

1665: Robert Hooke

54.

Invented the microscope and examined the microscopic life found in pond water

a)

1665: Robert Hooke

b)

1674: Anton von Leeuwenhoek-

c)

1855: Virchow

d)

1839: Schwann

55.

Discovered plant cells

a)

Anton von Leeuwenhoek

b)

1665: Robert Hooke-

c)

1838: Schleiden

d)

1855: Virchow

56.

All living things are made out of cells

a)

1674: Anton von Leeuwenhoek-

b)

1855: Virchow

c)

1838: Schleiden

d)

1839: Schwann

57.

Cells come from other cells

a)

1855: Virchow

b)

1674: Anton von Leeuwenhoek

c)

1838: Schleiden

d)

1665: Robert Hooke

58.

Cell theory

a)

Cells come from other cells

b)

Reproducing, obtaining or making food, using energy, and moving from place to place

c)

thin layer of protein and fat that surrounds the cell, “security guard”, controls what goes in and out of the cell

d)

states that all living things are composed of cells, cells are the basic units of structure in living things, and all cells are produced from other cells

59.

What functions of cells

a)

All living things are made out of cells

b)

Prokaryotic or Eukaryotic

c)

Reproducing, obtaining or making food, using energy, and moving from place to place

d)

Discovered plant cells

60.

What are prokaryotic cells?

a)

They don’t have a nucleus, DNA is suspended in the cytoplasm, enclosed by a cell membrane, has no membrane-bound organelles, and are single-celled organisms

b)

Controls the cell/brain of the cell, stores DNA

c)

thin layer of protein and fat that surrounds the cell, “security guard”, controls what goes in and out of the cell

d)

They have a nucleus, membrane-bound organelles, nucleus contains DNA, enclosed by a cell membrane, and are unicellular or multicellular organisms

61.

What are eukaryotic cells?

a)

They have a nucleus, membrane-bound organelles, nucleus contains DNA, enclosed by a cell membrane, and are unicellular or multicellular organisms

b)

Found in only eukaryotic cells, made of protein, like threads or fibers that criss cross the cell, supports and shapes the cell, assists

c)

They don’t have a nucleus, DNA is suspended in the cytoplasm, enclosed by a cell membrane, has no membrane-bound organelles, and are single-celled organisms

d)

Has no ribosomes and makes lipids

62.

thin layer of protein and fat that surrounds the cell, “security guard”, controls what goes in and out of the cell

a)

Centrioles-

b)

Nucleolus-

c)

Cell Wall-

d)

Cell membrane

63.

Found in only eukaryotic cells, made of protein, like threads or fibers that criss cross the cell, supports and shapes the cell, assists in cell division and movement

a)

ytoplasm

b)

Cytoskeleton-

c)

Smooth ER

d)

Nucleus

64.

Found in both prokaryotic and eukaryotic cells, thick, jelly-like substance, located all around the cell except inside the nucleus, cushions the organelles inside the cell, 65% water

a)

Cytoplasm-

b)

Centriole

c)

acuol

d)

Mitochondria-

65.

- Controls the cell/brain of the cell, stores DNA

a)

Lysosom

b)

DNA

c)

Nucleus-

d)

Nucleolus-

66.

Inside the nucleus, place where ribosomes are located that help make proteins

a)

Chloroplast

b)

Nucleolus

c)

Centrioles

d)

Endoplasmic Reticulum

67.

tells the cell what to do

a)

Chloroplast

b)

Smooth ER

c)

Microtubules

d)

DNA

68.

Covered with ribosomes, transports material through the cell, “Delivery truck”, receives “packages” from the Golgi body and delivers them to their location, found in both plant and animal cells

a)

Vacuole

b)

Centrioles

c)

Endoplasmic Reticulum

d)

Vesicles

69.

Covered with ribosomes and makes proteins

a)

Cytoskeleton

b)

Golgi Apparatus

c)

Mitochondria

d)

Rough ER

70.

Has no ribosomes and makes lipids

a)

Smooth ER

b)

Microtubule

c)

Vacuole

d)

Cell Wall

71.

made out of protein and DNA, makes proteins, look like tiny dots, found in both plant and animal cells

a)

Golgi Apparatus

b)

Golgi Apparatus

c)

Ribosomes

d)

Vesicle

72.

Packaging center, puts proteins and carbohydrates into packages for the ER

a)

Centriole

b)

Golgi Apparatus

c)

Nucleolus

d)

Vacuole

73.

- Small membrane bound sacs that divide some materials from the rest of the cytoplasm, transport materials from place to place, ER pinches off to create them, “Storage containers”

a)

Vesicles

b)

Cell membrane

c)

Centrioles-

d)

Microtubules-

74.

- Power house, supplies energy, contain their own ribosomes and DNA

a)

Chloroplast-

b)

Centrioles-

c)

Vacuole

d)

Mitochondria

75.

- In animal cells: fills with food and stores food, contains enzymes… In plant cells: fill with water (too much, burst, too little, wilt)

a)

Cell Membrane

b)

Vacuole

c)

Endoplasmic Reticulum

d)

Lysosome

76.

- contains digestive enzymes, “garbage disposal”, gets rid of waste products, only found in animal cells

a)

Cytoplasm-

b)

DNA

c)

Lysosome

d)

Chloropla

77.

made of microtubules arranged in a cylinder, assists with cell division and dividing DNA

a)

Centrioles

b)

Mitochondria

c)

Microtubules

d)

Chloroplast

78.

- a narrow, hollow tube-like structure that makes up a centriole

a)

Mitochondria

b)

Microtubules-

c)

Cell Wall

d)

Chloroplast-

79.

Only found in plant cells, provides support, made of cellulose, “skeleton” of the plant

a)

Golgi Apparatus

b)

Polar Head

c)

Chloroplast

d)

Cell Wall

80.

Only found in plant cells, converts sunlight into energy, where photosynthesis takes place, green and is why plants are green, contain their own ribosomes and DNA

a)

Vacuole

b)

Mitochondria

c)

Centrioles

d)

Chloroplast

81.

Controls the passage of materials in and out of the cell, separates a cell from the external environment

a)

Receptor

b)

Protein

c)

Fluid Mosaic Model

d)

Cell Membrane

82.

How many phospholipid layers is a cell membrane composed of?

a)

1

b)

3

c)

2

d)

4

83.

What is a Polar Head?

a)

For no bonds with water, tails are attracted to each other but repelled by water

b)

strengthens the cell membrane

c)

“Identification Tag”, made out of carbohydrates, used to communicate with other cells

d)

? Forms H+ bonds with water molecules

84.

What is a Nonpolar Tail

a)

tunnel with a door, transports substances

b)

For no bonds with water, tails are attracted to each other but repelled by water

c)

“Transportation”, made out of protein, allow molecules to pass through the membrane

d)

strengthens the cell membrane

85.

Fluid Mosaic Model

a)

The cell membrane allows SOME material to pass through into the cell

b)

- Describes the arrangement of the molecules that make up a cell membrane

c)

Identification Tag”, made out of carbohydrates, used to communicate with other

d)

Protein that detects a signal molecule and performs and action in response

86.

Carbohydrate Chain-

a)

materials move across membranes because of concentration differences

b)

ater moving from a higher to lower concentration

c)

tunnel with a door, transports substances

d)

Identification Tag”, made out of carbohydrates, used to communicate with other cells

87.

Protein-

a)

Proteins embedded in the cell membrane transport substances through the membrane

b)

tunnel with a door, transports substances

c)

Protein that detects a signal molecule and performs and action in response

d)

“Transportation”, made out of protein, allow molecules to pass through the membrane

88.

Cholesterol

a)

For no bonds with water, tails are attracted to each other but repelled by water

b)

strengthens the cell membrane

c)

- Describes the arrangement of the molecules that make up a cell membrane

d)

Transportation”, made out of protein, allow molecules to pass through the membrane

89.

Selective Permeability

a)

The cell membrane allows SOME material to pass through into the cell

b)

 

Cell Membrane- Controls the passage of materials in and out of the cell, separates a cell from the external environment

c)

Proteins embedded in the cell membrane transport substances through the membrane

d)

Protein that detects a signal molecule and performs and action in response

90.

Transportation in and out of the cell

a)

tunnel with a door, transports substances

b)

- Describes the arrangement of the molecules that make up a cell membrane

c)

Proteins embedded in the cell membrane transport substances through the membrane

d)

Protein that detects a signal molecule and performs and action in response

91.

Protein Channel

a)

Forms H+ bonds with water molecules

b)

or no bonds with water, tails are attracted to each other but repelled by water

c)

tunnel with a door, transports substances

d)

Protein that detects a signal molecule and performs and action in response

92.

Receptor-

a)

? Forms H+ bonds with water molecules

b)

Difference in concentration of a substance from one location to another, move from higher to lower concentration

c)

Protein that detects a signal molecule and performs and action in response

d)

Diffusion of molecules across a membrane through transport proteins, requires no energy, makes it easier to move across the membrane

93.

Transportation across the cell membrane

a)

materials move across membranes because of concentration differences

b)

Requires energy, drives molecules across a membrane from a lower to higher concentration, uses transport proteins powered with ATP, molecules move against the concentration gradient

c)

opposite of endocytosis

d)

Movement of molecules in a fluid or gas from a higher to lower concentration, moves down the concentration gradient

94.

Concentration Gradient

a)

Diffusion of molecules across a membrane through transport proteins, requires no energy, makes it easier to move across the membrane

b)

 water flows out of the cell, concentration is higher outside of the cell, cell can shrivel and die

c)

Difference in concentration of a substance from one location to another, move from higher to lower concentration

d)

requires energy, the process of taking materials into the cell (membrane makes a pocket around the molecule, pocket breaks off membrane inside the cell and forms a vesicle, lysosome breaks down the vesicle and contents are released inside the cell)

95.

Passive Transport-

a)

Constant movement, equal in and out, even, “Happy”

b)

Movement of molecules in a fluid or gas from a higher to lower concentration, moves down the concentration gradient

c)

water flows out of the cell, concentration is higher outside of the cell, cell can shrivel and die

d)

Does not require energy from the cell (2 types: diffusion and osmosis)

96.

Diffusion-

a)

- Water moves into the cell, concentration is higher inside the cell, cell could expand and burst

b)

Movement of molecules in a fluid or gas from a higher to lower concentration, moves down the concentration gradient

c)

Diffusion of molecules across a membrane through transport proteins, requires no energy, makes it easier to move across the membrane

d)

Requires energy, drives molecules across a membrane from a lower to higher concentration, uses transport proteins powered with ATP, molecules move against the concentration gradient

97.

Osmosis

a)

- Water moving from a higher to lower concentration

b)

Constant movement, equal in and out, even, “Happy”

c)

- water flows out of the cell, concentration is higher outside of the cell, cell can shrivel and die

d)

Water moves into the cell, concentration is higher inside the cell, cell could expand and burst

98.

What are the three types of solutions of osmosis?

a)

Hypotonic

b)

Exocytonic

c)

Isotonic

d)

Hypertonic

99.

Isotonic-

a)

Water moves into the cell, concentration is higher inside the cell, cell could expand and burst

b)

requires energy, the process of taking materials into the cell (membrane makes a pocket around the molecule, pocket breaks off membrane inside the cell and forms a vesicle, lysosome breaks down the vesicle and contents are released inside the cell)

c)

water flows out of the cell, concentration is higher outside of the cell, cell can shrivel and die

d)

Constant movement, equal in and out, even, “Happy”

100.

Hypertonic

a)

water flows out of the cell, concentration is higher outside of the cell, cell can shrivel and die

b)

Water moves into the cell, concentration is higher inside the cell, cell could expand and burst

c)

Constant movement, equal in and out, even, “Happy”

d)

Requires energy, drives molecules across a membrane from a lower to higher concentration, uses transport proteins powered with ATP, molecules move against the concentration gradient

101.

Hypotonic

a)

Constant movement, equal in and out, even, “Happy”

b)

Water moving from a higher to lower concentration

c)

Water moves into the cell, concentration is higher inside the cell, cell could expand and burst

d)

- water flows out of the cell, concentration is higher outside of the cell, cell can shrivel and die

102.

Facilitated Diffusion-

a)

Movement of molecules in a fluid or gas from a higher to lower concentration, moves down the concentration gradient

b)

- Requires energy, drives molecules across a membrane from a lower to higher concentration, uses transport proteins powered with ATP, molecules move against the concentration gradient

c)

requires energy, the process of taking materials into the cell (membrane makes a pocket around the molecule, pocket breaks off membrane inside the cell and forms a vesicle, lysosome breaks down the vesicle and contents are released inside the cell)

d)

Diffusion of molecules across a membrane through transport proteins, requires no energy, makes it easier to move across the membrane

103.

Active Transport

a)

requires energy, the process of taking materials into the cell (membrane makes a pocket around the molecule, pocket breaks off membrane inside the cell and forms a vesicle, lysosome breaks down the vesicle and contents are released inside the cell)

b)

Water moving from a higher to lower concentration

c)

Requires energy, drives molecules across a membrane from a lower to higher concentration, uses transport proteins powered with ATP, molecules move against the concentration gradient

d)

- Diffusion of molecules across a membrane through transport proteins, requires no energy, makes it easier to move across the membrane

104.

Endocytosis

a)

materials move across membranes because of concentration differences

b)

Requires energy, drives molecules across a membrane from a lower to higher concentration, uses transport proteins powered with ATP, molecules move against the concentration gradient

c)

requires energy, the process of taking materials into the cell (membrane makes a pocket around the molecule, pocket breaks off membrane inside the cell and forms a vesicle, lysosome breaks down the vesicle and contents are released inside the cell)

d)

Diffusion of molecules across a membrane through transport proteins, requires no energy, makes it easier to move across the membrane

105.

Exocytosis-

a)

Diffusion of molecules across a membrane through transport proteins, requires no energy, makes it easier to move across the membrane

b)

- Requires energy, drives molecules across a membrane from a lower to higher concentration, uses transport proteins powered with ATP, molecules move against the concentration gradient

c)

requires energy, the process of taking materials into the cell (membrane makes a pocket around the molecule, pocket breaks off membrane inside the cell and forms a vesicle, lysosome breaks down the vesicle and contents are released inside the cell)

d)

opposite of endocytosis

106.

What is ATP

a)

Energy is released when a phosphate group is removed from the molecule. Now it is ADP (adenosine diphosphate)

b)

Adenosine Triphosphate, a molecule that transfers energy from the breakdown of food, carries chemical energy that the cells can use

c)

ATP transfers energy from the breakdown of food molecules for cell functions

d)

Organisms that use chemicals to make energy

107.

How to make chemical energy?

a)

Carbohydrates (36 ATP)

b)

Organisms that make their own food

c)

Molecules in food store energy in their bonds

d)

Organisms that use chemicals to make energy

108.

Why is ATP so important?

a)

 it’s one of the most important compounds that cells use to store and release energy

b)

Adenosine Triphosphate, a molecule that transfers energy from the breakdown of food, carries chemical energy that the cells can use

c)

ATP transfers energy from the breakdown of food molecules for cell functions

d)

t has a lower amount of energy and can be converted back to ATP with the addition of a phosphate group

109.

How does ATP work?

a)

Because it’s one of the most important compounds that cells use to store and release energy

b)

ATP transfers energy from the breakdown of food molecules for cell functions

c)

Adenosine Triphosphate, a molecule that transfers energy from the breakdown of food, carries chemical energy that the cells can use

d)

Energy is released when a phosphate group is removed from the molecule. Now it is ADP (adenosine diphosphate)

110.

What is ADP

a)

? It has a lower amount of energy and can be converted back to ATP with the addition of a phosphate group

b)

? Proteins

c)

Energy is released when a phosphate group is removed from the molecule. Now it is ADP (adenosine diphosphate)

d)

Organisms that use chemicals to make energy

111.

Energy in food

a)

Obtains food by consuming other living things

b)

Organisms that make their own food

c)

Organisms that use chemicals to make energy

d)

ATP transfers energy from the breakdown of food molecules for cell functions

112.

What type of carbon-based molecule is the most commonly broken-down molecule to make ATP?

a)

Plants/ producers

b)

Lipids/fats (146 ATP)

c)

 Proteins

d)

Carbohydrates (36 ATP)

113.

What type of carbon-based molecule can store the most energy

a)

roteins

b)

? Plants/ producers

c)

? Lipids/fats (146 ATP)

d)

Carbohydrates (36 ATP)

114.

What are the least likely carbon-based molecule to be broken down for ATP

a)

Lipids/fats (146 ATP)

b)

Proteins

c)

Carbohydrates (36 ATP)

d)

Plants/ producers

115.

What are heterotrophs?

a)

Organisms that use chemicals to make energy

b)

Obtains food by consuming other living things

c)

? Organisms that make their own food

116.

What are autotrophs?

a)

Organisms that make their own food

b)

Obtains food by consuming other living things

c)

Organisms that use chemicals to make energy

117.

What is chemosynthesis

a)

 Obtains food by consuming other living things

b)

Organisms that make their own food

c)

Organisms that use chemicals to make energy

118.

What is photosynthesis?

a)

Fluid that surrounds the grana

b)

this part of photosynthesis captures energy from sunlight, occurs in the thylakoid membrane, needs water and sunlight, ATP is transferred along the thylakoid membrane, oxygen is released

c)

Releases chemical energy from sugar and other carbon-based molecules to make ATP when oxygen is present

d)

Process that captures energy from sunlight to make sugars that store chemical energy

119.

Who uses photosynthesis?

a)

Cells

b)

humans

c)

Plants/ producers

d)

monsters

120.

What is chlorophyll?

a)

this part of photosynthesis captures energy from sunlight, occurs in the thylakoid membrane, needs water and sunlight

b)

White” light from the sun that has a mixture of different wavelengths of energy

c)

this part of photosynthesis makes sugar using the transferred energy, occurs in the stroma, carbon dioxide is needed, uses energy from the light dependent reaction, sugar is formed

d)

Molecules in chloroplast, absorbs some of the energy is visible light, absorbs red and blue wavelengths of light

121.

Light

a)

Molecules in chloroplast, absorbs some of the energy is visible light, absorbs red and blue wavelengths of light

b)

“White” light from the sun that has a mixture of different wavelengths of energy

c)

this part of photosynthesis makes sugar using the transferred energy, occurs in the stroma, carbon dioxide is needed, uses energy from the light dependent reaction, sugar is formed

d)

Stack of thylakoids

122.

What is chloroplast?

a)

Where chlorophyll pigments are located  

b)

Fluid that surrounds the grana

c)

Stack of thylakoids

d)

? Membrane bound organelle, site of photosynthesis

123.

What are grana?

a)

Where chlorophyll pigments are

b)

Membrane bound organelle, site of photosynthesis

c)

Stack of thylakoids

d)

Fluid that surrounds the grana

124.

What is stroma?

a)

Fluid that surrounds the grana

b)

Stack of thylakoids

c)

Membrane bound organelle, site of photosynthesis

d)

White” light from the sun that has a mixture of different wavelengths of energy

125.

What are thylakoids

a)

Membrane bound organelle, site of photosynthesis

b)

Stack of thylakoids

c)

Where chlorophyll pigments are located  

d)

Fluid that surrounds the grana

126.

What is the chemical equation of photosynthesis?

a)

6CO2+6H2OC6H12O14+6O26CO_2+6H_2O-→C_6H_12O14+6O_2

b)

6CO2+6H2OD6H12O6+6O26CO_2+6H_2O-→D_6H_12O_6+6O_2

c)

7CO2+6H2OC12H12O6+6O27CO_2+6H_2O-→C_{12}H_12O_6+6O_2

d)

  6CO2+6H2OC6H12O6+6O26CO_2+6H_2O-→C_6H_{12}O_6+6O_2

127.

Light Dependent Reaction-

a)

 this part of photosynthesis captures energy from sunlight, occurs in the thylakoid membrane, needs water and sunlight, ATP is transferred along the thylakoid membrane, oxygen is released this part of photosynthesis captures energy from sunlight, occurs in the thylakoid membrane, needs water and sunlight, ATP is transferred along the thylakoid membrane, oxygen is released

b)

Regular pattern of growth, DNA duplication, and cell division that occurs in prokaryotic and eukaryotic cells

c)

- this part of photosynthesis makes sugar using the transferred energy, occurs in the stroma, carbon dioxide is needed, uses energy from the light dependent reaction, sugar is formed

d)

Fluid that surrounds the grana

128.

Light Independent Reaction

a)

this part of photosynthesis captures energy from sunlight, occurs in the thylakoid membrane, needs water and sunlight, ATP is transferred along the thylakoid membrane, oxygen is released

b)

Membrane bound organelle, site of photosynthesis

c)

this part of photosynthesis makes sugar using the transferred energy, occurs in the stroma, carbon dioxide is needed, uses energy from the light dependent reaction, sugar is formed

d)

Stack of thylakoids

129.

What is cellular respiration?

a)

Electron Transport Chain. Last stage, occurs in the inner mitochondrial membrane, protein pumps are embedded in the membranes

b)

Releases chemical energy from sugar and other carbon-based molecules to make ATP when oxygen is present

c)

combination of proteins and DNA

d)

? Both halves of the chromosome

130.

What is the chemical equation for cellular respiration

a)

6EFO2+C6H12O66CO2+6H2O+Energy6EFO_2+C_6H_12O_6-→6CO_2+6H_2O+Energy

b)

6O2+C6H12O66CO2+6H2O+Energy6O_2+C_6H_12O_6-→6CO_2+6H_2O+Energy

c)

6O2+C6H12O66CO2+6H2O+Energy6O_2+C_6H_{12}O_6-→6CO_2+6H_2O+Energy

d)

6O2+C6H12O66CO2+6H2O6O_2+C_6H_12O_6-→6CO_2+6H_2O

131.

Where does cellular respiration occur?

a)

In the mitochondria

b)

In the nucleus

c)

In the cell membrane

d)

In the Lysosome

132.

What is the 1st step of cellular respiration?

a)

Electron Transport Chain. occurs in the inner mitochondrial membrane, protein pumps are embedded in the membranes

b)

Glycolysis. Must take place before cellular respiration can occur, is an anaerobic process (doesn’t require oxygen), occurs in the cytoplasm, ongoing process

c)

Krebs Cycle. Produces molecules that carry energy to the second part of cellular respiration, occurs in the matrix of the mitochondria

133.

What is the 2nd step of cellular respiration?

a)

Krebs Cycle. Produces molecules that carry energy to the second part of cellular respiration, occurs in the matrix of the mitochondria

b)

Electron Transport Chain. occurs in the inner mitochondrial membrane, protein pumps are embedded in the membranes

c)

Glycolysis. Must take place before cellular respiration can occur, is an anaerobic process (doesn’t require oxygen), occurs in the cytoplasm, ongoing process

134.

What is the 3rd step of cellular respiration?

a)

Glycolysis. Must take place before cellular respiration can occur, is an anaerobic process (doesn’t require oxygen), occurs in the cytoplasm, ongoing process

b)

Electron Transport Chain. occurs in the inner mitochondrial membrane, protein pumps are embedded in the membranes

c)

Krebs Cycle. Produces molecules that carry energy to the second part of cellular respiration, occurs in the matrix of the mitochondria

135.

What is the cell cycle?

a)

Process that divides the cell’s cytoplasm, 2 daughter cells are created

b)

Both halves of the chromosome

c)

One long continuous thread of DNA that consists of numerous genes (humans have 46)

d)

? Regular pattern of growth, DNA duplication, and cell division that occurs in prokaryotic and eukaryotic cells

136.

What are the main stages of the cell cycle?

a)

Gap 1, Mitosis

b)

Gap 1, Synthesis, Gap 2, Mitosis

c)

Synthesis, Gap 2, Mitosis

d)

Gap 2, Mitosis

137.

Gap 1-

a)

The cell divides the nucleus and its contents, the nuclear membrane dissolves, 2 new cells form that are identical

b)

The cell makes a copy of its DNA, the nucleus of the cell now contains 2 copies of its DNA

c)

during this time everything functions as normal, cell increases in size, cell spends most of its life in this stage

d)

The cell continues to carry out normal life functions, cell continues to grow

138.

Synthesis-

a)

The cell makes a copy of its DNA, the nucleus of the cell now contains 2 copies of its DNA

b)

 during this time everything functions as normal, cell increases in size, cell spends most of its life in this stage

c)

 during this time everything functions as normal, cell increases in size, cell spends most of its life in this stage

d)

The cell divides the nucleus and its contents, the nuclear membrane dissolves, 2 new cells form that are identical

139.

Gap 2-

a)

during this time everything functions as normal, cell increases in size, cell spends most of its life in this stage

b)

The cell makes a copy of its DNA, the nucleus of the cell now contains 2 copies of its DNA

c)

The cell divides the nucleus and its contents, the nuclear membrane dissolves, 2 new cells form that are identical

d)

The cell continues to carry out normal life functions, cell continues to grow

140.

Mitosis-

a)

during this time everything functions as normal, cell increases in size, cell spends most of its life in this stage

b)

The cell divides the nucleus and its contents, the nuclear membrane dissolves, 2 new cells form that are identical

c)

The cell continues to carry out normal life functions, cell continues to grow

d)

The cell makes a copy of its DNA, the nucleus of the cell now contains 2 copies of its DNA

141.

Cytokinesis-

a)

during this time everything functions as normal, cell increases in size, cell spends most of its life in this stage

b)

The cell divides the nucleus and its contents, the nuclear membrane dissolves, 2 new cells form that are identical

c)

The cell continues to carry out normal life functions, cell continues to grow

d)

Process that divides the cell’s cytoplasm, 2 daughter cells are created

142.

Which type of cell divides faster?

a)

Young

b)

Eukaryotic

c)

Prokaryotic

d)

Old

143.

How long does it take for Eukaryotic cells to replicate?

a)

11 hours

b)

24 hours

c)

12 hours

d)

2 hours

144.

Information Crisis-

a)

too many demands placed on DNA

b)

A combination of proteins and DNA

c)

volume grows too fast relative to surface area, material exchange is insufficient

d)

One long continuous thread of DNA that consists of numerous genes (humans have 46)

145.

Traffic Problems

a)

- Process that divides the cell’s cytoplasm, 2 daughter cells are created

b)

? One half of a duplicated chromosome

c)

too many demands placed on DNA

d)

volume grows too fast relative to surface area, material exchange is insufficient

146.

What is a chromosome?

a)

One long continuous thread of DNA that consists of numerous genes (humans have 46)

b)

he cell divides the nucleus and its contents, the nuclear membrane dissolves, 2 new cells form that are identical

c)

Regular pattern of growth, DNA duplication, and cell division that occurs in prokaryotic and eukaryotic cells

d)

It protects the DNA and located on either ends of the chromatids

147.

What are proteins called that help organize DNA and condense it in a chromosome?

a)

cytoplasm

b)

cells

c)

Histones

d)

eukaryotic

148.

What is chromatin?

a)

Where the sister chromatids are held together

b)

One half of a duplicated chromosome

c)

Both halves of the chromosome

d)

A combination of proteins and DNA

149.

What is a chromatid?

a)

One half of a duplicated chromosome

b)

Both halves of the chromosome

c)

A combination of proteins and DNA

d)

Where the sister chromatids are held together

150.

What are sister chromatids?

a)

One long continuous thread of DNA that consists of numerous genes (humans have 46)

b)

Both halves of the chromosome

c)

One half of a duplicated chromosome

d)

A combination of proteins and DNA

151.

What is centromere?

a)

 Histones

b)

Where the sister chromatids are held together

c)

One half of a duplicated chromosome

d)

Both halves of the chromosome

152.

What is the telomere?

a)

It protects the DNA and located on either ends of the chromatids

b)

Both halves of the chromosome

c)

Where the sister chromatids are held together

d)

A combination of proteins and DNA

153.

What is Interphase?

a)

Last part of mitosis, the nuclear membrane begins to form, chromosomes begin to uncoil, spindle fibers fall apart, cell begins to divide into two daughter cells

b)

Prepares the cell to divide, DNA is duplicated, the cell grows large enough to be divided in half equally (Contains Gap 1, Synthesis, and Gap 2)

c)

Second part of mitosis, spindle fibers attach to each chromosome, chromosomes align along the cell equator, spindle fivers attach to a protein structure on the centromere

d)

First part of mitosis, chromatin condenses into coiled chromosomes, nuclear envelope breaks down, centrioles move to opposite poles, spindle fibers form

154.

What is Prophase?

a)

The cytoplasm pinches and divides into two cells, each cell has an identical nucleus, a full stage of the cell cycle is now complete

b)

Third part of mitosis, sister chromatids separate from ach other, spindle fibers begin to shorten, spindle fibers pull sister chromatids away toward opposite ends of the cell

c)

Prepares the cell to divide, DNA is duplicated, the cell grows large enough to be divided in half equally (Contains Gap 1, Synthesis, and Gap 2)

d)

First part of mitosis, chromatin condenses into coiled chromosomes, nuclear envelope breaks down, centrioles move to opposite poles, spindle fibers form

155.

What is Metaphase?

a)

Third part of mitosis, sister chromatids separate from ach other, spindle fibers begin to shorten, spindle fibers pull sister chromatids away toward opposite ends of the cell

b)

Second part of mitosis, spindle fibers attach to each chromosome, chromosomes align along the cell equator, spindle fivers attach to a protein structure on the centromere

c)

First part of mitosis, chromatin condenses into coiled chromosomes, nuclear envelope breaks down, centrioles move to opposite poles, spindle fibers form

d)

 Last part of mitosis, the nuclear membrane begins to form, chromosomes begin to uncoil, spindle fibers fall apart, cell begins to divide into two daughter cells

156.

What is Anaphase?

a)

First part of mitosis, chromatin condenses into coiled chromosomes, nuclear envelope breaks down, centrioles move to opposite poles, spindle fibers form

b)

The cytoplasm pinches and divides into two cells, each cell has an identical nucleus, a full stage of the cell cycle is now complete

c)

 Third part of mitosis, sister chromatids separate from ach other, spindle fibers begin to shorten, spindle fibers pull sister chromatids away toward opposite ends of the cell

d)

Last part of mitosis, the nuclear membrane begins to form, chromosomes begin to uncoil, spindle fibers fall apart, cell begins to divide into two daughter cells

157.

What is Telophase?

a)

? First part of mitosis, chromatin condenses into coiled chromosomes, nuclear envelope breaks down, centrioles move to opposite poles, spindle fibers form

b)

The cytoplasm pinches and divides into two cells, each cell has an identical nucleus, a full stage of the cell cycle is now complete

c)

 Third part of mitosis, sister chromatids separate from ach other, spindle fibers begin to shorten, spindle fibers pull sister chromatids away toward opposite ends of the cell

d)

Last part of mitosis, the nuclear membrane begins to form, chromosomes begin to uncoil, spindle fibers fall apart, cell begins to divide into two daughter cells

158.

What is Cytokinesis?

a)

The cytoplasm pinches and divides into two cells, each cell has an identical nucleus, a full stage of the cell cycle is now complete

b)

First part of mitosis, chromatin condenses into coiled chromosomes, nuclear envelope breaks down, centrioles move to opposite poles, spindle fibers form

c)

Last part of mitosis, the nuclear membrane begins to form, chromosomes begin to uncoil, spindle fibers fall apart, cell begins to divide into two daughter cells

d)

Third part of mitosis, sister chromatids separate from ach other, spindle fibers begin to shorten, spindle fibers pull sister chromatids away toward opposite ends of the cell

159.

What are the types of body cells?

a)

Somatic

b)

Exocytosis

c)

Haploid

d)

Germ

160.

What are somatic cells?

a)

 Chromosome pairs 1-22, contain genes for characteristics not directly related to the sex of an organism

b)

 Body cells, make up most of body tissues and organs, DNA in body cells is NOT passed onto offspring

c)

 Directly control the development of sex characteristics (XX Female, XY Male)

d)

Cells found in the reproductive organs, develop into gametes/sex cells, DNA in gametes are passed onto offspring (two gametes: ova/eggs, spermatozoa/sperm)

161.

What are germ cells?

a)

Cells found in the reproductive organs, develop into gametes/sex cells, DNA in gametes are passed onto offspring (two gametes: ova/eggs, spermatozoa/sperm)

b)

The nuclear membrane breaks down, homologous chromosomes pair up gene by gene, sex chromosomes pair up, crossing over occurs

c)

Sex Cells, sex cells have only 1 copy of every chromosome (22 autosomes, 1 sex chromosome)

d)

Body cells, make up most of body tissues and organs, DNA in body cells is NOT passed onto offspring

162.

What’s the difference between gamete chromosomes and body cell chromosomes?

a)

1 copy from mom (23) 1 from dad (23), Diploid number=46 total chromosomes

b)

Fusion of egg and sperm, the nuclei from the male and female sex cells fuse to form 1 nucleus

c)

Gametes have half the number of chromosome that body cells have (body/46, gamete/23)

d)

The nuclear membrane breaks down, homologous chromosomes pair up gene by gene, sex chromosomes pair up, crossing over occurs

163.

What are homologous chromosomes?

a)

For each homologous pair, one chromosome comes from each parent

b)

increased # can make a new species, decreased # causes death)

c)

Directly control the development of sex characteristics (XX Female, XY Male)

d)

Cells found in the reproductive organs, develop into gametes/sex cells, DNA in gametes are passed onto offspring (two gametes: ova/eggs, spermatozoa/sperm)

164.

What are autosomes?

a)

Fusion of egg and sperm, the nuclei from the male and female sex cells fuse to form 1 nucleus

b)

Chromosome pairs 1-22, contain genes for characteristics not directly related to the sex of an organism

c)

Body cells, each cell has 2 copies of every chromosome: 1 copy from mom (23) 1 from dad (23), Diploid number=46 total chromosomes

d)

Directly control the development of sex characteristics (XX Female, XY Male)

165.

What are sex chromosomes?

a)

 Gametes have half the number of chromosome that body cells have (body/46, gamete/23)

b)

 Involves the fusion of 2 gametes (sex cells), offspring are a genetic mixture of both parents

c)

Makes haploid cells from diploid cells, occurs in sex cells, produces gametes

d)

Directly control the development of sex characteristics (XX Female, XY Male)

166.

What is sexual reproduction?

a)

Involves the fusion of 2 gametes (sex cells), offspring are a genetic mixture of both parents

b)

Maintaining the correct number of chromosomes is important to the survival of organisms (increased # can make a new species, decreased # causes death)

c)

Fusion of egg and sperm, the nuclei from the male and female sex cells fuse to form 1 nucleus

d)

Sex Cells, sex cells have only 1 copy of every chromosome (22 autosomes, 1 sex chromosome)

167.

What is fertilization?

a)

Makes haploid cells from diploid cells, occurs in sex cells, produces gametes

b)

 Directly control the development of sex characteristics (XX Female, XY Male)

c)

Fusion of egg and sperm, the nuclei from the male and female sex cells fuse to form 1 nucleus

d)

Involves the fusion of 2 gametes (sex cells), offspring are a genetic mixture of both parents

168.

What is diploid?

a)

 Sex Cells, sex cells have only 1 copy of every chromosome (22 autosomes, 1 sex chromosome)

b)

Body cells, each cell has 2 copies of every chromosome: 1 copy from mom (23) 1 from dad (23), Diploid number=46 total chromosomes

c)

The nuclear membrane breaks down, homologous chromosomes pair up gene by gene, sex chromosomes pair up, crossing over occurs

d)

Directly control the development of sex characteristics (XX Female, XY Male)

169.

What is haploid?

a)

Directly control the development of sex characteristics (XX Female, XY Male)

b)

Body cells, each cell has 2 copies of every chromosome: 1 copy from mom (23) 1 from dad (23), Diploid number=46 total chromosomes

c)

? Involves the fusion of 2 gametes (sex cells), offspring are a genetic mixture of both parents

d)

Sex Cells, sex cells have only 1 copy of every chromosome (22 autosomes, 1 sex chromosome)

170.

Why is the number of chromosomes important?

a)

ksldajfj

b)

Because it is

c)

IDK

d)

Maintaining the correct number of chromosomes is important to the survival of organisms (increased # can make a new species, decreased # causes death)

171.

What is meiosis?

a)

End result: 4 haploid cells with a combination of chromosomes from both parents (4 cells results that have half the normal chromosome number- 23

b)

The cell divides the nucleus and its contents, the nuclear membrane dissolves, 2 new cells form that are identical

c)

Two cells are formed, each have a unique combination of 23 duplicated chromosomes coming from both parent

d)

Makes haploid cells from diploid cells, occurs in sex cells, produces gametes

172.

What is Prophase 1?

a)

The nuclear membrane breaks down, homologous chromosomes pair up gene by gene, sex chromosomes pair up, crossing over occurs

b)

 The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell

c)

Two cells are formed, each have a unique combination of 23 duplicated chromosomes coming from both parent

d)

Pairs of chromosomes line up in the middle of the cell; this arrangement mixes up the chromosomes and helps create and maintain genetic diversity

173.

What is Metaphase 1?

a)

Pairs of chromosomes line up in the middle of the cell; this arrangement mixes up the chromosomes and helps create and maintain genetic diversity

b)

Two cells are formed, each have a unique combination of 23 duplicated chromosomes coming from both parent

c)

All 23 chromosomes align at the cell equator, each chromosome still has 2 sister chromatids

d)

The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell

174.

What is Anaphase 1?

a)

wo cells are formed, each have a unique combination of 23 duplicated chromosomes coming from both parent

b)

? The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell

c)

Paired homologous chromosomes separate, sister chromatids remain joined together as they move toward the poles

d)

Sister chromatids are pulled apart toward the poles of the cell

175.

What is Telophase 1?

a)

Pairs of chromosomes line up in the middle of the cell; this arrangement mixes up the chromosomes and helps create and maintain genetic diversity

b)

The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell

c)

End result: 4 haploid cells with a combination of chromosomes from both parents (4 cells results that have half the normal chromosome number- 23

d)

Two cells are formed, each have a unique combination of 23 duplicated chromosomes coming from both parent

176.

What is Prophase 2?

a)

The nuclear membrane breaks down, homologous chromosomes pair up gene by gene, sex chromosomes pair up, crossing over occurs

b)

All 23 chromosomes align at the cell equator, each chromosome still has 2 sister chromatids

c)

Pairs of chromosomes line up in the middle of the cell; this arrangement mixes up the chromosomes and helps create and maintain genetic diversity

d)

The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell

177.

What is Metaphase 2?

a)

Two cells are formed, each have a unique combination of 23 duplicated chromosomes coming from both parent

b)

Pairs of chromosomes line up in the middle of the cell; this arrangement mixes up the chromosomes and helps create and maintain genetic diversity

c)

Sister chromatids are pulled apart toward the poles of the cell

d)

All 23 chromosomes align at the cell equator, each chromosome still has 2 sister chromatids

178.

What is Anaphase 2?

a)

Sister chromatids are pulled apart toward the poles of the cell

b)

End result: 4 haploid cells with a combination of chromosomes from both parents (4 cells results that have half the normal chromosome number- 23

c)

The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell

d)

? Paired homologous chromosomes separate, sister chromatids remain joined together as they move toward the poles

179.

What is Telophase 2 and Cytokinesis?

a)

Paired homologous chromosomes separate, sister chromatids remain joined together as they move toward the poles

b)

The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell

c)

End result: 4 haploid cells with a combination of chromosomes from both parents (4 cells results that have half the normal chromosome number- 23

d)

 Two cells are formed, each have a unique combination of 23 duplicated chromosomes coming from both parent

180.

Differences between Mitosis and meiosis-

a)

Mitosis: Chromosomes don’t pair up Meiosis: Chromosomes pair up

b)

, Anaphase 1: sister chromatids remain together Mitosis: Chromatids always separate

c)

1 vs. 2 cell division

d)

, Meiosis: Results in haploid cells Mitosis: Results in diploid cells

e)

1 vs 3 division stages

181.

Gametogenesis

a)

Paired homologous chromosomes separate, sister chromatids remain joined together as they move toward the poles

b)

The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell

c)

the production of gametes from haploid cells

d)

End result: 4 haploid cells with a combination of chromosomes from both parents (4 cells results that have half the normal chromosome number- 23