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WorksheetsScience Finals Review
Total questions: 181
Worksheet time: 2hrs 32mins
Beaker-
Container for chemicals, measures volume
Provides an approximate measurement of a liquid’s volume in liters or millimeters.
Used to measure the mass of an object in grams (Beam 1- 1 gram units, 2- 10 gram units, 3- 100 gram units)
A preserved organism or object used for research and observation
Graduated Cylinder-
Helps to cut observe, transfer, and examine biological specimens (includes probe, scissors, scalpel, tweezers, pins, and ruler)
Measures temperature in Celsius of liquids or solids
Used to heat chemicals or other lab objects
- Measure the volume of liquid in mL, the liquid is measured at the meniscus
Flask
Container for chemicals, measures volume
Measures temperature in Celsius of liquids or solids
- Used to heat chemicals or other lab objects
Used to transfer a small amount of liquid volume by squeezing and releasing the bulb
Test Tube-
A glass tube used to hold chemicals that can be heated and mixed within the test tube
- Measures temperature in Celsius of liquids or solids
Used to transfer a small amount of liquid volume by squeezing and releasing the bulb
- Allows the growth and observation of organisms
Test Tube Clamp-
- Zooms in on an object for closer observation
Used to hold the test tube and is used when the tube contains dangerous chemicals
Measures temperature in Celsius of liquids or solids
Used to measure the mass of an object in grams (Beam 1- 1 gram units, 2- 10 gram units, 3- 100 gram units)
Petri Dish
Makes objects look bigger for observation
A preserved organism or object used for research and observation
Allows the growth and observation of organisms
Zooms in on an object for closer observation
Hot Plate-
Used to heat chemicals or other lab objects
- Zooms in on an object for closer observation
Allows the growth and observation of organisms
Provides an approximate measurement of a liquid’s volume in liters or millimeters.
Thermometer
- Makes objects look bigger for observation
Helps to cut observe, transfer, and examine biological specimens (includes probe, scissors, scalpel, tweezers, pins, and ruler)
Allows the growth and observation of organisms
- Measures temperature in Celsius of liquids or solids
Microscope-
Used to transfer a small amount of liquid volume by squeezing and releasing the bulb
Uses lenses to magnify small objects for observation
Used to measure the mass of an object in grams (Beam 1- 1 gram units, 2- 10 gram units, 3- 100 gram units)
Used to heat chemicals or other lab objects
Stereoscope-
Zooms in on an object for closer observation
ed to heat chemicals or other lab objects
Used to hold the test tube and is used when the tube contains dangerous chemicals
Measure the volume of liquid in mL, the liquid is measured at the meniscus
Hand Lens
- Used to measure the mass of an object in grams (Beam 1- 1 gram units, 2- 10 gram units, 3- 100 gram units)
Measure the volume of liquid in mL, the liquid is measured at the meniscus
Makes objects look bigger for observation
A glass tube used to hold chemicals that can be heated and mixed within the test tube
Eyedropper
Helps to cut observe, transfer, and examine biological specimens (includes probe, scissors, scalpel, tweezers, pins, and ruler)
Container for chemicals, measures volume
Provides an approximate measurement of a liquid’s volume in liters or millimeters.
Used to transfer a small amount of liquid volume by squeezing and releasing the bulb
Dissecting Equipment-
A preserved organism or object used for research and observation
Used to measure the mass of an object in grams (Beam 1- 1 gram units, 2- 10 gram units, 3- 100 gram units)
- Helps to cut observe, transfer, and examine biological specimens (includes probe, scissors, scalpel, tweezers, pins, and ruler)
Allows the growth and observation of organisms
Triple Beam Balance-
Makes objects look bigger for observation
- Used to measure the mass of an object in grams
Uses lenses to magnify small objects for observation
Used to heat chemicals or other lab objects
Biological Specimen-
A preserved organism or object used for research and observation
sed to hold the test tube and is used when the tube contains dangerous chemicals
Provides an approximate measurement of a liquid’s volume in liters or millimeters.
Container for chemicals, measures volume
Observation
Characteristics that can be measured or counted.
using our senses to study the world
a condition that is manipulated, or changed, by a scientist.
a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence
Data
a condition that is manipulated, or changed, by a scientist.
the conditions that don’t change during an experiment
Recorded observations.
a proposed answer for a scientific question
Qualitative Data
Descriptions of a phenomenon
When scientists study factors called independent variables and dependent variables to find cause-and-effect relationships
Characteristics that can be measured or counted.
a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence
Quantative Data:
a proposed answer for a scientific question
Descriptions of a phenomenon
Characteristics that can be measured or counted.
- using our senses to study the world
Hypothesis-
- a condition that is manipulated, or changed, by a scientist.
- a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence
e conditions that don’t change during an experiment
a proposed answer for a scientific question
Experiments-
condition that is manipulated, or changed, by a scientist.
When scientists study factors called independent variables and dependent variables to find cause-and-effect relationships
a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence
Recorded observations
Independent Variable
- a condition that is manipulated, or changed, by a scientist.
the experimental data that is observed and measured during an experiment
the conditions that don’t change during an experiment
a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence
Dependent Variable-
the conditions that don’t change during an experiment
- a condition that is manipulated, or changed, by a scientist
the experimental data that is observed and measured during an experiment
a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence
Constants
the conditions that don’t change during an experiment
Characteristics that can be measured or counted.
When scientists study factors called independent variables and dependent variables to find cause-and-effect relationships
a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence
Theory
- the conditions that don’t change during an experiment
a proposed explanation for wide range of observations and experimental results that is supported by a wide range of evidence
Descriptions of a phenomenon
- a proposed answer for a scientific question
What are the building blocks of life
Small subunits called monomers
Fats, Oils, and Cholesterols.
Carbon is the basis of most molecules that make up all living things.
Four unpaired electrons
How many electrons does carbon have in its outer ring?
4
2
1
3
How many general types of structures do carbon-based molecules have?
Three; straight chain, branched chain, ring
two; straight chain, branched chain
one; ring
none
What are carbon based molecules made up of?
A large molecule made of monomers bonded together
Molecules composed of carbon, hydrogen, and oxygen
Small subunits called monomers
Carbohydrates, Lipids, Proteins, and Nucleic Acids
What is a polymer
Small subunits called monomers
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
The most basic type of a carbohydrate called simple sugar
A large molecule made of monomers bonded together
What four types of carbon-based molecules are there?
Carbohydrates, Lipids, Proteins
Carbohydrates, Lipids, Proteins, and Nucleic Acids
Lipids, Proteins, and Nucleic Acids
Nucleic Acids
What are carbohydrates?
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
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.
Carbon is the basis of most molecules that make up all living things.
Polymers of amino acids (amino acids contain C, H, O, N, and S)
What is the letter combination for glucose?
C6 H12 O6
C7 H12 O6
C6 H12 O9
C6 H18 O6
What is a monosaccharide?
Two simple sugars bonded together (aka table sugar)
Starches (made and stored by plants), Glycogen (made and stored in animals), Cellulose (makes up the strong plant cell walls)
The most basic type of a carbohydrate called simple sugar
any glucose molecules that are linked together
What are disaccharides?
any glucose molecules that are linked together
The most basic type of a carbohydrate called simple sugar
Two simple sugars bonded together (aka table sugar)
? 3 fatty acids bonded to glycerol
What are polysaccharides?
Two simple sugars bonded together (aka table sugar)
Many glucose molecules that are linked together
Animal Fats
The most basic type of a carbohydrate called simple sugar
What are the types of carbohydrates?
Starches (made and stored by plants), Glycogen (made and stored in animals), Cellulose (makes up the strong plant cell walls)
Starches (made and stored by plants)
Starches (made and stored by plants), Glycogen (made and stored in animals)
none
What are lipids?
Contain detailed instruction to build proteins.
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
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.
Polymers of amino acids (amino acids contain C, H, O, N, and S)
How are lipids a part of cell structure?
They form cell membranes. Their head is a polar phosphate, their tail is a nonpolar fatty acid
It is a part of cell membranes and is used by your body to make chemicals called steroid hormones
3 fatty acids bonded to glycerol
They store a large amount of chemical energy in organisms.
What are fatty acids?
Chains of carbon atoms bonded to Hydrogen atoms. Fats and oils contain these fatty acids bonded to glycerol.
3 fatty acids bonded to glycerol
Oils
They link amino acids together into chains called polypeptides
What is a triglyceride?
DNA (stores genetic information) and RNA (builds proteins)
Oils
3 fatty acids bonded to glycerol
? Animal Fats
What are saturated fats?
Two simple sugars bonded together (aka table sugar)
Animal Fats
Oils
Monomers called nucleotides
What are unsaturated fats
Discovered plant cells
They form cell membranes. Their head is a polar phosphate, their tail is a nonpolar fatty acid
They form covalent bonds with each other
Oils
What are phospholipids?
They form cell membranes. Their head is a polar phosphate, their tail is a nonpolar fatty acid
It is a part of cell membranes and is used by your body to make chemicals called steroid hormones
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.
Chains of carbon atoms bonded to Hydrogen atoms. Fats and oils contain these fatty acids bonded to glycerol.
What is cholesterol?
Monomers called nucleotides
Contain detailed instruction to build proteins
DNA (stores genetic information) and RNA (builds proteins)
It is a part of cell membranes and is used by your body to make chemicals called steroid hormones
What are proteins?
Contain detailed instruction to build proteins.
C6 H12 O6)
Polymers of amino acids (amino acids contain C, H, O, N, and S)
Fats, Oils, and Cholesterols.
What do amino acids form?
DNA (stores genetic information) and RNA (builds proteins)
covalent bonds with each other
They link amino acids together into chains called polypeptides
Monomers called nucleotides
What are peptide bonds?
They link amino acids together into chains called polypeptides
It is a part of cell membranes and is used by your body to make chemicals called steroid hormones
They form covalent bonds with each other
olymers of amino acids (amino acids contain C, H, O, N, and S)
What are nucleic acids?
Discovered plant cells
They form covalent bonds with each other
Contain detailed instruction to build proteins.
Polymers of amino acids (amino acids contain C, H, O, N, and S)
What are polymers made up of?
Monomers called nucleotides
- Cells come from other cells
Contain detailed instruction to build proteins.
They form covalent bonds with each other
What are nucleotides?
hey form cell membranes. Their head is a polar phosphate, their tail is a nonpolar fatty acid
ers of amino acids (amino acids contain C, H, O, N, and S)
They link amino acids together into chains called polypeptides
Composed of deoxyribose (sugar), a phosphate group, and a nitrogen base
What are the two types of nucleic acids?
Chains of carbon atoms bonded to Hydrogen atoms. Fats and oils contain these fatty acids bonded to glycerol.
DNA (stores genetic information) and RNA (builds proteins)
3 fatty acids bonded to glycerol
They link amino acids together into chains called polypeptides
Named the “rooms” he saw inside of a cork slice “cells”
1839: Schwann
1674: Anton von Leeuwenhoek-
1838: Schleiden
1665: Robert Hooke
Invented the microscope and examined the microscopic life found in pond water
1665: Robert Hooke
1674: Anton von Leeuwenhoek-
1855: Virchow
1839: Schwann
Discovered plant cells
Anton von Leeuwenhoek
1665: Robert Hooke-
1838: Schleiden
1855: Virchow
All living things are made out of cells
1674: Anton von Leeuwenhoek-
1855: Virchow
1838: Schleiden
1839: Schwann
Cells come from other cells
1855: Virchow
1674: Anton von Leeuwenhoek
1838: Schleiden
1665: Robert Hooke
Cell theory
Cells come from other cells
Reproducing, obtaining or making food, using energy, and moving from place to place
thin layer of protein and fat that surrounds the cell, “security guard”, controls what goes in and out of the cell
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
What functions of cells
All living things are made out of cells
Prokaryotic or Eukaryotic
Reproducing, obtaining or making food, using energy, and moving from place to place
Discovered plant cells
What are prokaryotic cells?
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
Controls the cell/brain of the cell, stores DNA
thin layer of protein and fat that surrounds the cell, “security guard”, controls what goes in and out of the cell
They have a nucleus, membrane-bound organelles, nucleus contains DNA, enclosed by a cell membrane, and are unicellular or multicellular organisms
What are eukaryotic cells?
They have a nucleus, membrane-bound organelles, nucleus contains DNA, enclosed by a cell membrane, and are unicellular or multicellular organisms
Found in only eukaryotic cells, made of protein, like threads or fibers that criss cross the cell, supports and shapes the cell, assists
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
Has no ribosomes and makes lipids
thin layer of protein and fat that surrounds the cell, “security guard”, controls what goes in and out of the cell
Centrioles-
Nucleolus-
Cell Wall-
Cell membrane
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
ytoplasm
Cytoskeleton-
Smooth ER
Nucleus
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
Cytoplasm-
Centriole
acuol
Mitochondria-
- Controls the cell/brain of the cell, stores DNA
Lysosom
DNA
Nucleus-
Nucleolus-
Inside the nucleus, place where ribosomes are located that help make proteins
Chloroplast
Nucleolus
Centrioles
Endoplasmic Reticulum
tells the cell what to do
Chloroplast
Smooth ER
Microtubules
DNA
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
Vacuole
Centrioles
Endoplasmic Reticulum
Vesicles
Covered with ribosomes and makes proteins
Cytoskeleton
Golgi Apparatus
Mitochondria
Rough ER
Has no ribosomes and makes lipids
Smooth ER
Microtubule
Vacuole
Cell Wall
made out of protein and DNA, makes proteins, look like tiny dots, found in both plant and animal cells
Golgi Apparatus
Golgi Apparatus
Ribosomes
Vesicle
Packaging center, puts proteins and carbohydrates into packages for the ER
Centriole
Golgi Apparatus
Nucleolus
Vacuole
- 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”
Vesicles
Cell membrane
Centrioles-
Microtubules-
- Power house, supplies energy, contain their own ribosomes and DNA
Chloroplast-
Centrioles-
Vacuole
Mitochondria
- In animal cells: fills with food and stores food, contains enzymes… In plant cells: fill with water (too much, burst, too little, wilt)
Cell Membrane
Vacuole
Endoplasmic Reticulum
Lysosome
- contains digestive enzymes, “garbage disposal”, gets rid of waste products, only found in animal cells
Cytoplasm-
DNA
Lysosome
Chloropla
made of microtubules arranged in a cylinder, assists with cell division and dividing DNA
Centrioles
Mitochondria
Microtubules
Chloroplast
- a narrow, hollow tube-like structure that makes up a centriole
Mitochondria
Microtubules-
Cell Wall
Chloroplast-
Only found in plant cells, provides support, made of cellulose, “skeleton” of the plant
Golgi Apparatus
Polar Head
Chloroplast
Cell Wall
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
Vacuole
Mitochondria
Centrioles
Chloroplast
Controls the passage of materials in and out of the cell, separates a cell from the external environment
Receptor
Protein
Fluid Mosaic Model
Cell Membrane
How many phospholipid layers is a cell membrane composed of?
1
3
2
4
What is a Polar Head?
For no bonds with water, tails are attracted to each other but repelled by water
strengthens the cell membrane
“Identification Tag”, made out of carbohydrates, used to communicate with other cells
? Forms H+ bonds with water molecules
What is a Nonpolar Tail
tunnel with a door, transports substances
For no bonds with water, tails are attracted to each other but repelled by water
“Transportation”, made out of protein, allow molecules to pass through the membrane
strengthens the cell membrane
Fluid Mosaic Model
The cell membrane allows SOME material to pass through into the cell
- Describes the arrangement of the molecules that make up a cell membrane
Identification Tag”, made out of carbohydrates, used to communicate with other
Protein that detects a signal molecule and performs and action in response
Carbohydrate Chain-
materials move across membranes because of concentration differences
ater moving from a higher to lower concentration
tunnel with a door, transports substances
Identification Tag”, made out of carbohydrates, used to communicate with other cells
Protein-
Proteins embedded in the cell membrane transport substances through the membrane
tunnel with a door, transports substances
Protein that detects a signal molecule and performs and action in response
“Transportation”, made out of protein, allow molecules to pass through the membrane
Cholesterol
For no bonds with water, tails are attracted to each other but repelled by water
strengthens the cell membrane
- Describes the arrangement of the molecules that make up a cell membrane
Transportation”, made out of protein, allow molecules to pass through the membrane
Selective Permeability
The cell membrane allows SOME material to pass through into the cell
Cell Membrane- Controls the passage of materials in and out of the cell, separates a cell from the external environment
Proteins embedded in the cell membrane transport substances through the membrane
Protein that detects a signal molecule and performs and action in response
Transportation in and out of the cell
tunnel with a door, transports substances
- Describes the arrangement of the molecules that make up a cell membrane
Proteins embedded in the cell membrane transport substances through the membrane
Protein that detects a signal molecule and performs and action in response
Protein Channel
Forms H+ bonds with water molecules
or no bonds with water, tails are attracted to each other but repelled by water
tunnel with a door, transports substances
Protein that detects a signal molecule and performs and action in response
Receptor-
? Forms H+ bonds with water molecules
Difference in concentration of a substance from one location to another, move from higher to lower concentration
Protein that detects a signal molecule and performs and action in response
Diffusion of molecules across a membrane through transport proteins, requires no energy, makes it easier to move across the membrane
Transportation across the cell membrane
materials move across membranes because of concentration differences
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
opposite of endocytosis
Movement of molecules in a fluid or gas from a higher to lower concentration, moves down the concentration gradient
Concentration Gradient
Diffusion of molecules across a membrane through transport proteins, requires no energy, makes it easier to move across the membrane
water flows out of the cell, concentration is higher outside of the cell, cell can shrivel and die
Difference in concentration of a substance from one location to another, move from higher to lower concentration
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)
Passive Transport-
Constant movement, equal in and out, even, “Happy”
Movement of molecules in a fluid or gas from a higher to lower concentration, moves down the concentration gradient
water flows out of the cell, concentration is higher outside of the cell, cell can shrivel and die
Does not require energy from the cell (2 types: diffusion and osmosis)
Diffusion-
- Water moves into the cell, concentration is higher inside the cell, cell could expand and burst
Movement of molecules in a fluid or gas from a higher to lower concentration, moves down the concentration gradient
Diffusion of molecules across a membrane through transport proteins, requires no energy, makes it easier to move across the membrane
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
Osmosis
- Water moving from a higher to lower concentration
Constant movement, equal in and out, even, “Happy”
- water flows out of the cell, concentration is higher outside of the cell, cell can shrivel and die
Water moves into the cell, concentration is higher inside the cell, cell could expand and burst
What are the three types of solutions of osmosis?
Hypotonic
Exocytonic
Isotonic
Hypertonic
Isotonic-
Water moves into the cell, concentration is higher inside the cell, cell could expand and burst
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)
water flows out of the cell, concentration is higher outside of the cell, cell can shrivel and die
Constant movement, equal in and out, even, “Happy”
Hypertonic
water flows out of the cell, concentration is higher outside of the cell, cell can shrivel and die
Water moves into the cell, concentration is higher inside the cell, cell could expand and burst
Constant movement, equal in and out, even, “Happy”
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
Hypotonic
Constant movement, equal in and out, even, “Happy”
Water moving from a higher to lower concentration
Water moves into the cell, concentration is higher inside the cell, cell could expand and burst
- water flows out of the cell, concentration is higher outside of the cell, cell can shrivel and die
Facilitated Diffusion-
Movement of molecules in a fluid or gas from a higher to lower concentration, moves down the concentration gradient
- 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
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)
Diffusion of molecules across a membrane through transport proteins, requires no energy, makes it easier to move across the membrane
Active Transport
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)
Water moving from a higher to lower concentration
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
- Diffusion of molecules across a membrane through transport proteins, requires no energy, makes it easier to move across the membrane
Endocytosis
materials move across membranes because of concentration differences
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
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)
Diffusion of molecules across a membrane through transport proteins, requires no energy, makes it easier to move across the membrane
Exocytosis-
Diffusion of molecules across a membrane through transport proteins, requires no energy, makes it easier to move across the membrane
- 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
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)
opposite of endocytosis
What is ATP
Energy is released when a phosphate group is removed from the molecule. Now it is ADP (adenosine diphosphate)
Adenosine Triphosphate, a molecule that transfers energy from the breakdown of food, carries chemical energy that the cells can use
ATP transfers energy from the breakdown of food molecules for cell functions
Organisms that use chemicals to make energy
How to make chemical energy?
Carbohydrates (36 ATP)
Organisms that make their own food
Molecules in food store energy in their bonds
Organisms that use chemicals to make energy
Why is ATP so important?
it’s one of the most important compounds that cells use to store and release energy
Adenosine Triphosphate, a molecule that transfers energy from the breakdown of food, carries chemical energy that the cells can use
ATP transfers energy from the breakdown of food molecules for cell functions
t has a lower amount of energy and can be converted back to ATP with the addition of a phosphate group
How does ATP work?
Because it’s one of the most important compounds that cells use to store and release energy
ATP transfers energy from the breakdown of food molecules for cell functions
Adenosine Triphosphate, a molecule that transfers energy from the breakdown of food, carries chemical energy that the cells can use
Energy is released when a phosphate group is removed from the molecule. Now it is ADP (adenosine diphosphate)
What is ADP
? It has a lower amount of energy and can be converted back to ATP with the addition of a phosphate group
? Proteins
Energy is released when a phosphate group is removed from the molecule. Now it is ADP (adenosine diphosphate)
Organisms that use chemicals to make energy
Energy in food
Obtains food by consuming other living things
Organisms that make their own food
Organisms that use chemicals to make energy
ATP transfers energy from the breakdown of food molecules for cell functions
What type of carbon-based molecule is the most commonly broken-down molecule to make ATP?
Plants/ producers
Lipids/fats (146 ATP)
Proteins
Carbohydrates (36 ATP)
What type of carbon-based molecule can store the most energy
roteins
? Plants/ producers
? Lipids/fats (146 ATP)
Carbohydrates (36 ATP)
What are the least likely carbon-based molecule to be broken down for ATP
Lipids/fats (146 ATP)
Proteins
Carbohydrates (36 ATP)
Plants/ producers
What are heterotrophs?
Organisms that use chemicals to make energy
Obtains food by consuming other living things
? Organisms that make their own food
What are autotrophs?
Organisms that make their own food
Obtains food by consuming other living things
Organisms that use chemicals to make energy
What is chemosynthesis
Obtains food by consuming other living things
Organisms that make their own food
Organisms that use chemicals to make energy
What is photosynthesis?
Fluid that surrounds the grana
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
Releases chemical energy from sugar and other carbon-based molecules to make ATP when oxygen is present
Process that captures energy from sunlight to make sugars that store chemical energy
Who uses photosynthesis?
Cells
humans
Plants/ producers
monsters
What is chlorophyll?
this part of photosynthesis captures energy from sunlight, occurs in the thylakoid membrane, needs water and sunlight
White” light from the sun that has a mixture of different wavelengths of energy
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
Molecules in chloroplast, absorbs some of the energy is visible light, absorbs red and blue wavelengths of light
Light
Molecules in chloroplast, absorbs some of the energy is visible light, absorbs red and blue wavelengths of light
“White” light from the sun that has a mixture of different wavelengths of energy
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
Stack of thylakoids
What is chloroplast?
Where chlorophyll pigments are located
Fluid that surrounds the grana
Stack of thylakoids
? Membrane bound organelle, site of photosynthesis
What are grana?
Where chlorophyll pigments are
Membrane bound organelle, site of photosynthesis
Stack of thylakoids
Fluid that surrounds the grana
What is stroma?
Fluid that surrounds the grana
Stack of thylakoids
Membrane bound organelle, site of photosynthesis
White” light from the sun that has a mixture of different wavelengths of energy
What are thylakoids
Membrane bound organelle, site of photosynthesis
Stack of thylakoids
Where chlorophyll pigments are located
Fluid that surrounds the grana
What is the chemical equation of photosynthesis?
6CO2+6H2O−→C6H12O14+6O2
6CO2+6H2O−→D6H12O6+6O2
7CO2+6H2O−→C12H12O6+6O2
6CO2+6H2O−→C6H12O6+6O2
Light Dependent Reaction-
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
Regular pattern of growth, DNA duplication, and cell division that occurs in prokaryotic and eukaryotic cells
- 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
Fluid that surrounds the grana
Light Independent Reaction
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
Membrane bound organelle, site of photosynthesis
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
Stack of thylakoids
What is cellular respiration?
Electron Transport Chain. Last stage, occurs in the inner mitochondrial membrane, protein pumps are embedded in the membranes
Releases chemical energy from sugar and other carbon-based molecules to make ATP when oxygen is present
combination of proteins and DNA
? Both halves of the chromosome
What is the chemical equation for cellular respiration
6EFO2+C6H12O6−→6CO2+6H2O+Energy
6O2+C6H12O6−→6CO2+6H2O+Energy
6O2+C6H12O6−→6CO2+6H2O+Energy
6O2+C6H12O6−→6CO2+6H2O
Where does cellular respiration occur?
In the mitochondria
In the nucleus
In the cell membrane
In the Lysosome
What is the 1st step of cellular respiration?
Electron Transport Chain. occurs in the inner mitochondrial membrane, protein pumps are embedded in the membranes
Glycolysis. Must take place before cellular respiration can occur, is an anaerobic process (doesn’t require oxygen), occurs in the cytoplasm, ongoing process
Krebs Cycle. Produces molecules that carry energy to the second part of cellular respiration, occurs in the matrix of the mitochondria
What is the 2nd step of cellular respiration?
Krebs Cycle. Produces molecules that carry energy to the second part of cellular respiration, occurs in the matrix of the mitochondria
Electron Transport Chain. occurs in the inner mitochondrial membrane, protein pumps are embedded in the membranes
Glycolysis. Must take place before cellular respiration can occur, is an anaerobic process (doesn’t require oxygen), occurs in the cytoplasm, ongoing process
What is the 3rd step of cellular respiration?
Glycolysis. Must take place before cellular respiration can occur, is an anaerobic process (doesn’t require oxygen), occurs in the cytoplasm, ongoing process
Electron Transport Chain. occurs in the inner mitochondrial membrane, protein pumps are embedded in the membranes
Krebs Cycle. Produces molecules that carry energy to the second part of cellular respiration, occurs in the matrix of the mitochondria
What is the cell cycle?
Process that divides the cell’s cytoplasm, 2 daughter cells are created
Both halves of the chromosome
One long continuous thread of DNA that consists of numerous genes (humans have 46)
? Regular pattern of growth, DNA duplication, and cell division that occurs in prokaryotic and eukaryotic cells
What are the main stages of the cell cycle?
Gap 1, Mitosis
Gap 1, Synthesis, Gap 2, Mitosis
Synthesis, Gap 2, Mitosis
Gap 2, Mitosis
Gap 1-
The cell divides the nucleus and its contents, the nuclear membrane dissolves, 2 new cells form that are identical
The cell makes a copy of its DNA, the nucleus of the cell now contains 2 copies of its DNA
during this time everything functions as normal, cell increases in size, cell spends most of its life in this stage
The cell continues to carry out normal life functions, cell continues to grow
Synthesis-
The cell makes a copy of its DNA, the nucleus of the cell now contains 2 copies of its DNA
during this time everything functions as normal, cell increases in size, cell spends most of its life in this stage
during this time everything functions as normal, cell increases in size, cell spends most of its life in this stage
The cell divides the nucleus and its contents, the nuclear membrane dissolves, 2 new cells form that are identical
Gap 2-
during this time everything functions as normal, cell increases in size, cell spends most of its life in this stage
The cell makes a copy of its DNA, the nucleus of the cell now contains 2 copies of its DNA
The cell divides the nucleus and its contents, the nuclear membrane dissolves, 2 new cells form that are identical
The cell continues to carry out normal life functions, cell continues to grow
Mitosis-
during this time everything functions as normal, cell increases in size, cell spends most of its life in this stage
The cell divides the nucleus and its contents, the nuclear membrane dissolves, 2 new cells form that are identical
The cell continues to carry out normal life functions, cell continues to grow
The cell makes a copy of its DNA, the nucleus of the cell now contains 2 copies of its DNA
Cytokinesis-
during this time everything functions as normal, cell increases in size, cell spends most of its life in this stage
The cell divides the nucleus and its contents, the nuclear membrane dissolves, 2 new cells form that are identical
The cell continues to carry out normal life functions, cell continues to grow
Process that divides the cell’s cytoplasm, 2 daughter cells are created
Which type of cell divides faster?
Young
Eukaryotic
Prokaryotic
Old
How long does it take for Eukaryotic cells to replicate?
11 hours
24 hours
12 hours
2 hours
Information Crisis-
too many demands placed on DNA
A combination of proteins and DNA
volume grows too fast relative to surface area, material exchange is insufficient
One long continuous thread of DNA that consists of numerous genes (humans have 46)
Traffic Problems
- Process that divides the cell’s cytoplasm, 2 daughter cells are created
? One half of a duplicated chromosome
too many demands placed on DNA
volume grows too fast relative to surface area, material exchange is insufficient
What is a chromosome?
One long continuous thread of DNA that consists of numerous genes (humans have 46)
he cell divides the nucleus and its contents, the nuclear membrane dissolves, 2 new cells form that are identical
Regular pattern of growth, DNA duplication, and cell division that occurs in prokaryotic and eukaryotic cells
It protects the DNA and located on either ends of the chromatids
What are proteins called that help organize DNA and condense it in a chromosome?
cytoplasm
cells
Histones
eukaryotic
What is chromatin?
Where the sister chromatids are held together
One half of a duplicated chromosome
Both halves of the chromosome
A combination of proteins and DNA
What is a chromatid?
One half of a duplicated chromosome
Both halves of the chromosome
A combination of proteins and DNA
Where the sister chromatids are held together
What are sister chromatids?
One long continuous thread of DNA that consists of numerous genes (humans have 46)
Both halves of the chromosome
One half of a duplicated chromosome
A combination of proteins and DNA
What is centromere?
Histones
Where the sister chromatids are held together
One half of a duplicated chromosome
Both halves of the chromosome
What is the telomere?
It protects the DNA and located on either ends of the chromatids
Both halves of the chromosome
Where the sister chromatids are held together
A combination of proteins and DNA
What is Interphase?
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
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)
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
First part of mitosis, chromatin condenses into coiled chromosomes, nuclear envelope breaks down, centrioles move to opposite poles, spindle fibers form
What is Prophase?
The cytoplasm pinches and divides into two cells, each cell has an identical nucleus, a full stage of the cell cycle is now complete
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
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)
First part of mitosis, chromatin condenses into coiled chromosomes, nuclear envelope breaks down, centrioles move to opposite poles, spindle fibers form
What is Metaphase?
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
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
First part of mitosis, chromatin condenses into coiled chromosomes, nuclear envelope breaks down, centrioles move to opposite poles, spindle fibers form
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
What is Anaphase?
First part of mitosis, chromatin condenses into coiled chromosomes, nuclear envelope breaks down, centrioles move to opposite poles, spindle fibers form
The cytoplasm pinches and divides into two cells, each cell has an identical nucleus, a full stage of the cell cycle is now complete
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
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
What is Telophase?
? First part of mitosis, chromatin condenses into coiled chromosomes, nuclear envelope breaks down, centrioles move to opposite poles, spindle fibers form
The cytoplasm pinches and divides into two cells, each cell has an identical nucleus, a full stage of the cell cycle is now complete
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
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
What is Cytokinesis?
The cytoplasm pinches and divides into two cells, each cell has an identical nucleus, a full stage of the cell cycle is now complete
First part of mitosis, chromatin condenses into coiled chromosomes, nuclear envelope breaks down, centrioles move to opposite poles, spindle fibers form
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
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
What are the types of body cells?
Somatic
Exocytosis
Haploid
Germ
What are somatic cells?
Chromosome pairs 1-22, contain genes for characteristics not directly related to the sex of an organism
Body cells, make up most of body tissues and organs, DNA in body cells is NOT passed onto offspring
Directly control the development of sex characteristics (XX Female, XY Male)
Cells found in the reproductive organs, develop into gametes/sex cells, DNA in gametes are passed onto offspring (two gametes: ova/eggs, spermatozoa/sperm)
What are germ cells?
Cells found in the reproductive organs, develop into gametes/sex cells, DNA in gametes are passed onto offspring (two gametes: ova/eggs, spermatozoa/sperm)
The nuclear membrane breaks down, homologous chromosomes pair up gene by gene, sex chromosomes pair up, crossing over occurs
Sex Cells, sex cells have only 1 copy of every chromosome (22 autosomes, 1 sex chromosome)
Body cells, make up most of body tissues and organs, DNA in body cells is NOT passed onto offspring
What’s the difference between gamete chromosomes and body cell chromosomes?
1 copy from mom (23) 1 from dad (23), Diploid number=46 total chromosomes
Fusion of egg and sperm, the nuclei from the male and female sex cells fuse to form 1 nucleus
Gametes have half the number of chromosome that body cells have (body/46, gamete/23)
The nuclear membrane breaks down, homologous chromosomes pair up gene by gene, sex chromosomes pair up, crossing over occurs
What are homologous chromosomes?
For each homologous pair, one chromosome comes from each parent
increased # can make a new species, decreased # causes death)
Directly control the development of sex characteristics (XX Female, XY Male)
Cells found in the reproductive organs, develop into gametes/sex cells, DNA in gametes are passed onto offspring (two gametes: ova/eggs, spermatozoa/sperm)
What are autosomes?
Fusion of egg and sperm, the nuclei from the male and female sex cells fuse to form 1 nucleus
Chromosome pairs 1-22, contain genes for characteristics not directly related to the sex of an organism
Body cells, each cell has 2 copies of every chromosome: 1 copy from mom (23) 1 from dad (23), Diploid number=46 total chromosomes
Directly control the development of sex characteristics (XX Female, XY Male)
What are sex chromosomes?
Gametes have half the number of chromosome that body cells have (body/46, gamete/23)
Involves the fusion of 2 gametes (sex cells), offspring are a genetic mixture of both parents
Makes haploid cells from diploid cells, occurs in sex cells, produces gametes
Directly control the development of sex characteristics (XX Female, XY Male)
What is sexual reproduction?
Involves the fusion of 2 gametes (sex cells), offspring are a genetic mixture of both parents
Maintaining the correct number of chromosomes is important to the survival of organisms (increased # can make a new species, decreased # causes death)
Fusion of egg and sperm, the nuclei from the male and female sex cells fuse to form 1 nucleus
Sex Cells, sex cells have only 1 copy of every chromosome (22 autosomes, 1 sex chromosome)
What is fertilization?
Makes haploid cells from diploid cells, occurs in sex cells, produces gametes
Directly control the development of sex characteristics (XX Female, XY Male)
Fusion of egg and sperm, the nuclei from the male and female sex cells fuse to form 1 nucleus
Involves the fusion of 2 gametes (sex cells), offspring are a genetic mixture of both parents
What is diploid?
Sex Cells, sex cells have only 1 copy of every chromosome (22 autosomes, 1 sex chromosome)
Body cells, each cell has 2 copies of every chromosome: 1 copy from mom (23) 1 from dad (23), Diploid number=46 total chromosomes
The nuclear membrane breaks down, homologous chromosomes pair up gene by gene, sex chromosomes pair up, crossing over occurs
Directly control the development of sex characteristics (XX Female, XY Male)
What is haploid?
Directly control the development of sex characteristics (XX Female, XY Male)
Body cells, each cell has 2 copies of every chromosome: 1 copy from mom (23) 1 from dad (23), Diploid number=46 total chromosomes
? Involves the fusion of 2 gametes (sex cells), offspring are a genetic mixture of both parents
Sex Cells, sex cells have only 1 copy of every chromosome (22 autosomes, 1 sex chromosome)
Why is the number of chromosomes important?
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Maintaining the correct number of chromosomes is important to the survival of organisms (increased # can make a new species, decreased # causes death)
What is meiosis?
End result: 4 haploid cells with a combination of chromosomes from both parents (4 cells results that have half the normal chromosome number- 23
The cell divides the nucleus and its contents, the nuclear membrane dissolves, 2 new cells form that are identical
Two cells are formed, each have a unique combination of 23 duplicated chromosomes coming from both parent
Makes haploid cells from diploid cells, occurs in sex cells, produces gametes
What is Prophase 1?
The nuclear membrane breaks down, homologous chromosomes pair up gene by gene, sex chromosomes pair up, crossing over occurs
The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell
Two cells are formed, each have a unique combination of 23 duplicated chromosomes coming from both parent
Pairs of chromosomes line up in the middle of the cell; this arrangement mixes up the chromosomes and helps create and maintain genetic diversity
What is Metaphase 1?
Pairs of chromosomes line up in the middle of the cell; this arrangement mixes up the chromosomes and helps create and maintain genetic diversity
Two cells are formed, each have a unique combination of 23 duplicated chromosomes coming from both parent
All 23 chromosomes align at the cell equator, each chromosome still has 2 sister chromatids
The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell
What is Anaphase 1?
wo cells are formed, each have a unique combination of 23 duplicated chromosomes coming from both parent
? The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell
Paired homologous chromosomes separate, sister chromatids remain joined together as they move toward the poles
Sister chromatids are pulled apart toward the poles of the cell
What is Telophase 1?
Pairs of chromosomes line up in the middle of the cell; this arrangement mixes up the chromosomes and helps create and maintain genetic diversity
The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell
End result: 4 haploid cells with a combination of chromosomes from both parents (4 cells results that have half the normal chromosome number- 23
Two cells are formed, each have a unique combination of 23 duplicated chromosomes coming from both parent
What is Prophase 2?
The nuclear membrane breaks down, homologous chromosomes pair up gene by gene, sex chromosomes pair up, crossing over occurs
All 23 chromosomes align at the cell equator, each chromosome still has 2 sister chromatids
Pairs of chromosomes line up in the middle of the cell; this arrangement mixes up the chromosomes and helps create and maintain genetic diversity
The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell
What is Metaphase 2?
Two cells are formed, each have a unique combination of 23 duplicated chromosomes coming from both parent
Pairs of chromosomes line up in the middle of the cell; this arrangement mixes up the chromosomes and helps create and maintain genetic diversity
Sister chromatids are pulled apart toward the poles of the cell
All 23 chromosomes align at the cell equator, each chromosome still has 2 sister chromatids
What is Anaphase 2?
Sister chromatids are pulled apart toward the poles of the cell
End result: 4 haploid cells with a combination of chromosomes from both parents (4 cells results that have half the normal chromosome number- 23
The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell
? Paired homologous chromosomes separate, sister chromatids remain joined together as they move toward the poles
What is Telophase 2 and Cytokinesis?
Paired homologous chromosomes separate, sister chromatids remain joined together as they move toward the poles
The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell
End result: 4 haploid cells with a combination of chromosomes from both parents (4 cells results that have half the normal chromosome number- 23
Two cells are formed, each have a unique combination of 23 duplicated chromosomes coming from both parent
Differences between Mitosis and meiosis-
Mitosis: Chromosomes don’t pair up Meiosis: Chromosomes pair up
, Anaphase 1: sister chromatids remain together Mitosis: Chromatids always separate
1 vs. 2 cell division
, Meiosis: Results in haploid cells Mitosis: Results in diploid cells
1 vs 3 division stages
Gametogenesis
Paired homologous chromosomes separate, sister chromatids remain joined together as they move toward the poles
The nuclear membrane dissolves, spindle fibers form, centrioles move to the opposite sides of the cell
the production of gametes from haploid cells
End result: 4 haploid cells with a combination of chromosomes from both parents (4 cells results that have half the normal chromosome number- 23
