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Unit 2: Cell Structure & Function

Total questions: 179

Worksheet time: 2hrs 43mins

Name
Class
Date
1.

_______ are the smallest units of life becuase they grow, reproduce, respond, and use energy.

a)

atoms

b)

elements

c)

cells

d)

molecules

2.

Cells come from ___________

a)

other pre-existing cells

b)

cytoplasm

c)

organelles

d)

prokaryotes

3.

Cell Theory states that (select all that apply)

a)

cells come from pre-existing cells

b)

all organisms are made of cells

c)

cells are the smallest, most basic unit of life

4.

Acts as a control center for the cell

a)

vacuole

b)

cell wall

c)

nucleus

d)

cytoplasm

5.

Both plant and animal cells have a cell wall

a)

True

b)

False

6.

What kind of cell is this?

a)

prokaryotic

b)

eukaryotic

c)

virus

7.

Viruses are

a)

living

b)

nonliving

8.

What is unicellular?

a)

one cell

b)

many cells

c)

no nucleus

d)

DNA

9.

What 2 organelles do plant cells have that animal cells lack?

a)

chloroplast

b)

ribosome

c)

nucleus

d)

cell wall

10.

 

A cell stores food, water or waste products in

a)

chloroplast

b)

nucleus

c)

ribosomes

d)

vacuole

11.

Site of where proteins are made for all cell activity

a)

nucleus

b)

ribosome

c)

mitochondria

d)

cell membrane

12.

What organelle controls what comes into and out of the cell?

a)

nucleus

b)

mitochondria

c)

ribosome

d)

cell membrane

13.

Produces chemical energy for growth & development from sugar molecules found in food

a)

mitochondria

b)

golgi body

c)

nucleus

d)

ribosomes

14.

Which type of cell does NOT contain a nucleus or other membrane bound organelles?

a)

Prokaryotic

b)

Eukaryotic

15.

Which organelle sorts, packages, and transports materials in the cell?

a)

mitochondria

b)

golgi apparatus

c)

endoplasmic reticulum

d)

ribosomes

16.

This jelly-like substance fills the cell.

a)

endoplasmic reticulum

b)

ribosome

c)

cytoplasm

d)

vesicle

17.

Plant cells have these to provide support and shape for plants.

a)

cell membranes

b)

cell walls

c)

nucleus

d)

cytoplasm

18.

This makes food for the plant in a process called photosynthesis.

a)

mitochondria

b)

nucleus

c)

chloroplasts

d)

cell membrane

19.

There are used to transport substances between the cell.

a)

vesicles

b)

ribosomes

c)

lysosomes

d)

uber eats

20.

This organelle is responsible for removing waste and dead parts from the cell.

a)

mitochondria

b)

lysosome

c)

vacuole

d)

cell wall

21.

Which 2 characteristics of life do viruses have?

a)

evolve and adapt

b)

reproduce

c)

made of cells

d)

contain genetic material

22.

What kind of cell is this?

a)

prokaryotic

b)

eukaryotic

c)

virus

23.

Which is the correct levels of organization from smallest to largest?

a)

tissue, organ, cell, organism, organ system

b)

organism, organ system, organ, tissue, cell

c)

cell, tissue, organ, organ system, organism

24.

Which is NOT a characteristic of life?

a)

obtain and use energy

b)

able to use oxygen

c)

contains genetic material

d)

made of cells

25.

Moves materials around the cell; has 2 types smooth and rough

a)

lysosome

b)

endoplasmic reticulum

c)

golgi apparatus

d)

cytoplasm

26.

When an organism has cells with a nucleus, they are called _______.

a)

Prokaryotes

b)

Eukaryotes

c)

Bacteria

d)

Archaea

27.

What is the basic unit of an organism?

a)

Chloroplast

b)

Organ

c)

Organelles

d)

Cell

28.

What kind of organism is made of many cells, each with a special function?

a)

Multicellular

b)

Prokaryotic

c)

Eukaryotic

d)

Unicellular

29.

What are the small structures inside of cells that carry out specific functions called?

a)

Organelles

b)

Tissues

c)

Organs

30.

One example of a prokaryote is a.....

a)

Animal

b)

Plant

c)

Virus

d)

Bacteria

31.

What kind of cell?

a)

Eukaryote

b)

Prokaryote

c)

Both

32.

What kind of cell?

a)

Prokaryote

b)

Eukaryote

c)

Both

33.

What kind of cell?

a)

Prokaryote

b)

Both

c)

Neither

d)

Eukaryote

34.

Where is DNA found in Prokaryote cell?

a)

Inside of the Nucleus

b)

Inside of the cell (No specific place)

35.

Where is DNA found in a Eukaryotic Cell?

a)

No specific location (Scattered around the cell)

b)

Inside of the Chloroplast

c)

Inside of the cell membrane

d)

Inside of the nucleus

36.

Where is DNA stored in a eukaryotic cell?

a)

Cytoplasm

b)

Mitochondria

c)

Ribosomes

d)

Nucleus

37.

This is a picture of:

a)

Prokaryotic Cell

b)

Eukaryotic Cell

38.
Plants and animal cells are examples of ___ cells 
a)
prokaryotic cells 
b)
eukaryotic cells 
39.
All cells come from other...
a)
cells 
b)
plants 
c)
nucleus 
d)
microscopes 
40.
All living things are made of...
a)
atoms 
b)
cells 
c)
bacteria 
d)
plants 
41.
Bacteria is what kind of cell?
a)
Eukaryotic
b)
Prokaryotic
42.

The cell part found only in plant cells that provides support and structure to the cell is

a)

Cell membrane

b)

Cell wall

c)

Nucleus

d)

Chloroplast

43.

The organelle found only in plant cells that makes glucose during photosynthesis is:

a)

Chloroplast

b)

Mitochondria

c)

Nucleus

d)

Vacuole

44.

The organelle that makes ATP or energy is all cells is

a)

Mitochondria

b)

Chloroplast

c)

Nucleus

d)

Vacuole

45.

The control center of the cell. It contains the DNA

a)

Vacuole

b)

Chloroplast

c)

Nucleus

d)

Mitochondria

46.

Organelle that is much larger in plant cells than animal cells. It stores liquid in the cell

a)

Mitochondria

b)

Chloroplast

c)

Vacuole

d)

Nucleus

47.

Organelles found in both plant cells and animal cells. It filters what goes in and out of the cell

a)

Cell wall

b)

Chloroplast

c)

Mitochondria

d)

Cell membrane

48.

Cell parts that build proteins according to the DNA code

a)

Mitochondria

b)

Chloroplast

c)

Nucleus

d)

Ribosomes

49.

If we were comparing a cell to a country, a power plant would best represent

a)

The nucleus

b)

The chloroplast

c)

The mitochondria

d)

The cell membrane

50.

The cell membrane is selectively permeable. What does "selectively permeable" mean?

a)

Anything can enter.

b)

Nothing can enter.

c)

Some things can enter, while other things can't enter.

51.

What organelle contains the DNA and is the "brain, or control center" of the cell?

a)

mitochondria

b)

nucleus

c)

ribosome

d)

cell membrane

52.
jelly-like substance within the cell membrane that the organelles float in. 
a)
mitochondria
b)
vacuole
c)
chloroplasts
d)
cytoplasm
53.
Sorts and packages materials and moves them  OUT of the cell.
a)
cell membrane
b)
endoplasmic reticulum
c)
golgi bodies
d)
vacuole
54.

Which of the following statements about living cells is false?

a)

Most are microscopic

b)

They are found in all animals but not in all plants.

c)

They are the smallest basic units that can carry out all of the functions that we normally define as life.

d)

None of the above

55.

Chromosomes are found in _____________________ of cells.

a)

the nucleus

b)

the cytoplasm

c)

both the nucleus and the cytoplasm

d)

None of the above

56.
Animal and Plant cells are both this type of cell.
a)
Eukaryote
b)
Prokaryote
57.
This organelle helps plants keep their rigid structure. 
a)
Cell wall
b)
Cell membrane
c)
Chloroplast
d)
Nucleus
58.
Why is the vacuole larger in a plant cell?
a)
Plants have more room for it.
b)
For storage of food and holding shape
c)
To deliver water to the cells from roots
d)
They use water more efficiently than an animal cell.
59.

The function of flagella is:

a)

Movement

b)

Provide Energy

c)

Protection

d)

Make Proteins

60.

Prokaryotic cells have all of the following parts EXCEPT:

a)

Cell membrane

b)

Ribosomes

c)

Cytoplasm

d)

Nuclear membrane

61.

The function of the rough ER is to:

a)

Produce and folding lipids

b)

Produce and folding proteins

c)

Produce and folding carbohydrates

d)

Produce and folding Nucleic acids

62.
This organelle acts like a gatekeeper, allowing some materials to pass through it, but not others. 
a)
Cytoplasm
b)
Cell Membrane
c)
Mitochondria
d)
Vacuole
63.
Where is the genetic material found in the cell? 
a)
Nucleolus
b)
Cytoplasm
c)
Nucleus
d)
Chloroplast
64.

Organelles where photosynthesis occurs, are green due to chlorophyll pigment found in them.

a)

Chloroplasts

b)

Cell Wall

c)

Cell Membrane

d)

Cytoplasm

65.

Powerhouse of the cell, organelle that is the site of ATP ( energy production ) and cellular respiration in plants and animals.

a)

Nucleus

b)

Ribosomes

c)

Mitochondria

d)

Vacuoles

66.

Saclike structures that store materials such as water, salts, proteins, and carbohydrates.

a)

Nucleus

b)

Ribosomes

c)

Organelles

d)

Vacuoles

67.
In many cells, this is the structure that controls the cell's activities.
a)
Cell membrane
b)
Organelle
c)
Nucleolus
d)
Nucleus
68.
The ___________ is the basic unit of life
a)
organ
b)
cell
c)
atom
d)
tissue
69.
Animal and Plant cells are both this type of cell.
a)
Eukaryote
b)
Prokaryote
70.
This organelle helps plants keep their rigid structure. 
a)
Cell wall
b)
Cell membrane
c)
Chloroplast
d)
Nucleus
71.

What organelle is associated with the production of proteins during protein synthesis?

a)

nucleus

b)

ribosome

c)

mitochondria

d)

cell membrane

72.

The cell membrane is selectively permeable. What does "selectively permeable" mean?

a)

Anything can enter.

b)

Nothing can enter.

c)

Some things can enter, while other things can't enter.

73.
Makes proteins.
a)
nucleus
b)
endoplasmic reticulum
c)
mitochondria
d)
ribosomes
74.
Sorts and packages materials and moves them  OUT of the cell.
a)
cell membrane
b)
endoplasmic reticulum
c)
golgi bodies
d)
vacuole
75.
Why is the vacuole larger in a plant cell?
a)
Plants have more room for it.
b)
For storage of food and holding shape
c)
To deliver water to the cells from roots
d)
They use water more efficiently than an animal cell.
76.

The function of flagella is:

a)

Movement

b)

Provide Energy

c)

Protection

d)

Make Proteins

77.

Prokaryotic cells have all of the following parts EXCEPT:

a)

Cell membrane

b)

Ribosomes

c)

Cytoplasm

d)

Nuclear membrane

78.

The function of the rough ER is to:

a)

Produce and folding lipids

b)

Produce and folding proteins

c)

Produce and folding carbohydrates

d)

Produce and folding Nucleic acids

79.

The function of the smooth ER is to:

a)

Make proteins

b)

Make lipids

c)

Make carbohydrates

d)

Make nucleic acids

80.

Identify the Cell shown in the figure

a)

Red Blood Cell

b)

Muscle cell

c)

Nerve cell

d)

Amoeba

81.
What is the difference between rough and smooth Endoplasmic Reticulum?
a)
There is no difference.
b)
Plants have rough ER, animals have smooth ER.
c)
What type of injuries the Doctors treat.
d)
Rough has ribosomes, smooth does not.
82.

Which of the following is NOT a part of the cell theory?

a)

The cell is the smallest unit in all organisms.

b)

All living things are made of cells.

c)

A cell can be a prokaryote or a eukaryote

d)

All cells come from pre-existing cells.

83.

Sorts, packages, and distributes proteins

a)

Smooth ER

b)

Rough ER

c)

Golgi body

d)

Lysosome

84.

Regulates what enters and leaves the cell

a)

Cell Wall

b)

Cell Membrane

c)

Chloroplast

d)

Cytoplasm

85.

Has ribosomes attached to its surface and is where many proteins are synthesized

a)

Smooth ER

b)

Rough ER

c)

Golgi body

d)

Lysosomes

86.

Filled with digestive enzymes that aid in the breakdown of lipids, carbohydrates, and proteins into smaller molecules that can be used by the rest of the cell.

a)

Chloroplasts

b)

Lysosomes

c)

Mitochondria

d)

Vacuole

87.

Which of the following is an example of a prokaryotic cell?

a)

Plant

b)

Animal

c)

Fungi

d)

Bacteria

88.

Which of the following is NOT an organelle found in an animal cell?

a)

Nucleus

b)

Mitochondria

c)

Chloroplast

d)

Centrioles

89.

Which of the following is NOT considered a difference between a prokaryotic and eukaryotic cell?

a)

Prokaryotic cells have DNA contained in a nucleus

b)

Eukaryotic cells have DNA contained in a nucleus

c)

Eukaryotes are multicellular and are generally larger

d)

Prokaryotes are unicellular and are generally smaller

90.

Which of the following is NOT an organelle found in plant cells?

a)

Cytoplasm

b)

Cell wall

c)

Chloroplast

d)

Centrioles

91.

Which of the following is NOT an organelle that is used for movement?

a)

Psuedopodia

b)

Cilia

c)

Flagella

d)

Nucleus

92.

Convert sunlight into energy via photosynthesis.

a)

Mitochondria

b)

Chloroplast

c)

Cell membrane

d)

Vacuoles

93.

Convert chemical energy stored in food into compounds that are more convenient for the cell to use.

a)

Mitochondria

b)

Chloroplast

c)

Cell membrane

d)

Vacuole

94.

For storage of water, salts, proteins, and carbohydrates. Some control the water content inside the cell.

a)

Lysosomes

b)

Vacuole

c)

Chloroplast

d)

Cytoplasm

95.

Rigid outer structure that provides support and protection for the plant cell.

a)

Cell Membrane

b)

Cell Wall

c)

Smooth ER

d)

Rough ER

96.

Which of the following are examples of eukaryotic cells?

a)

Bacteria and Protists

b)

Plant and Animals

c)

E-coli and mushrooms

97.

What structure of the animal cell is the golgi apparatus?

a)

4

b)

6

c)

8

d)

10

98.

What structure of the animal cell is represented by number 9?

a)

Chloroplast

b)

Mitochondria

c)

Endoplasmic Reticulum

d)

Nucleus

99.

What structure of the animal cell is represented by number 2?

a)

Centrioles

b)

Smooth ER

c)

Rough ER

d)

Nucleus

100.

What organelles is attached to structure number 3?

a)

Lysosomes

b)

Ribosome

c)

Microtubules

d)

Microfilaments

101.

What structure of the animal cell is represented by number 14?

a)

Cell membrane

b)

Cell Wall

c)

Cilia

d)

Flagella

102.

Students are observing particles moving against the concentration gradient in a lab investigation. Which type of transport are they observing?

a)

osmosis

b)

active Transport

c)

facilitated diffusion

d)

diffusion

103.

Students are observing particles moving with the concentration gradient in a lab investigation. Which type of transport are they observing?

a)

using pumps to move things quickly

b)

passive transport

c)

osmosis

d)

endocytosis

104.

This picture shows molecules of red dye that have moved. What is this type of movement called?

a)

Osmosis; the water molecules are moving from high concentration to low

b)

Diffusion; the dye molecules are moving from low to high concentration

c)

Diffusion; the dye molecules are moving from high to low concentration.

d)

Facilitated diffusion; because the molecules are moving through a protein channel.

105.

The cell membrane is responsible for allowing molecules to diffuse into or out of the cell. What type of movement is diffusion?

a)

Passive transport

b)

Active transport

106.

The cell membrane is responsible for allowing molecules to diffuse through a protein channel, from high concentration to low concentration. What type of transport is this?

a)

Passive Transport

b)

Active transport

107.

The cell membrane needs to use energy to move molecules quickly out of the cell through a pump. What type of transport is this?

a)

Passive transport

b)

Active transport

108.

Passive transport is when molecules move ________ the concentration gradient.

a)

against

b)

up

c)

down

d)

with

109.

Active transport is when molecules move ________ the concentration gradient.

a)

against

b)

up

c)

down

d)

with

110.

This picture is a representation of what type of transport?

a)

Osmosis because it is diffusing through a protein from an area of high concentration to low concentration.

b)

Facilitated diffusion because it is diffusing through a protein from an area of high concentration to low concentration.

c)

Facilitated diffusion because it is diffusing through a protein from an area of low concentration to high concentration.

d)

Simple diffusion because it is diffusing through a protein from an area of high concentration to low concentration.

111.

This picture describes the movement of molecules across the cell membrane. Choose 2 answers that correctly describes the movement of the molecules.

a)

Molecules are moving up the concentration gradient.

b)

Molecules are moving from an area of low concentration to area of high concentration .

c)

Molecules are moving down the concentration gradient.

d)

Molecules are moving from an area of high concentration to area of low concentration.

112.

What do you think will not allow the turgid plant cell to burst?

a)

chloroplast

b)

cell membrane

c)

cell wall

d)

central vacuole

113.

This a picture of an animal and plant cell placed in a solution. Describe the solution?

a)

Isotonic

b)

Hypotonic

c)

Hypertonic

114.

This a picture of an animal and plant cell placed in a solution. Describe the solution?

a)

Isotonic

b)

Hypotonic

c)

Hypertonic

115.

What type of solution was this plant placed in?

a)

hypertonic

b)

isotonic

c)

hypotonic

116.

What type of solution was this plant placed in?

a)

hypotonic

b)

isotonic

c)

hypertonic

117.

A cell with a 10% salt solution; is placed in distilled water with 0% starch concentration. Water can travel across a semipermeable membrane but starch cannot. Would you expect to see after an hour?

a)

The solution inside the cell is hypotonic and moves into the cell.

b)

The solution inside the cell is hypertonic so the water moves into the cell.

c)

The solution inside the cell is hypotonic and moves out of the cell.

d)

The solution inside the cell is isotonic so the water doesn't move.

118.

Which cell do you think would be most ideal for maintaining homeostasis?

a)

The smallest cell because it would be more efficient to remove and obtains molecules

b)

The largest one because it would be able to obtain more food and store for longer periods of time.

c)

The largest one because it has more room to grow

d)

The medium cell because it would be more efficient to remove and obtains molecules

119.

What is the monomer for a lipid?

a)

monosaccharide

b)

glycerol and fatty acid

c)

amino acids

d)

nucleic acid

120.

What is the name of this macromolecule?

a)

protein

b)

carbohydrate

c)

lipid

d)

nucleic acid

121.

What is the main function of this macromolecule?

a)

Insolation, and components of the cell membrane

b)

quick energy

c)

structure muscles and growth.

d)

storage of genetic information

122.

___ is particle movement from an area of lower concentration to an area of higher concentration.

a)

Active transport

b)

Passive transport

123.

Which type of passive transport focuses on the movement of water through the membrane?

a)

Facilitated diffusion

b)

Osmosis

c)

Diffusion

124.

What term describes a solution that has the same solute concentration inside of and outside of the cell?

a)

Hypertonic

b)

Hypotonic

c)

Isotonic

125.

The cell shrunk in size, which means it was placed in a ____ solution.

a)

Isotonic

b)

Hypertonic

c)

Hypotonic

126.

What is the diffusion of water across a cell or semi-permeable membrane?

a)
Osmosis
b)
Diffusion
c)
Active Transport
d)
Passive Transport
127.
In which case would a cell most likely shrink?
a)
when placed in a solution containing a high salt concentration
b)
when placed in a isotonic solution
c)
when placed in a solution containing a low pH
d)
when placed in a solution containing distilled water
128.
Active transport requires energy because...
a)
The cell is moving something against a concentration gradient
b)
The cell is moving something with a concentration gradient
129.
A student noticed that placing wilted lettuce in a bowl of cool water caused the lettuce to become more crisp and firm. What is the best explanation for his observation?
a)
Water moved into the lettuce cells by active transport.
b)
Water moved into the lettuce cells by osmosis.
c)
Salt moved into the lettuce cells by diffusion.
d)
Water moved out of the lettuce cells by osmosis.
130.

What part of the cell regulates what can enter and leave the cell?  

a)
Cell Membrane
b)
Nucleus
c)
Mitochondria
d)
Cytoplasm
131.
The picture below is an example of _________________.
a)
osmosis
b)
isotonic
c)
diffusion
d)
active transport
132.

Diffusion is a form of __________ transport.

a)

Passive

b)

Active

c)

Easy

d)

Free

133.

Passive Transport uses ____ energy

a)

no

b)

a lot of

c)

a little bit of

d)

some

134.

_____________ is the free movement of particles across the membrane with the concentration gradient

a)

diffusion

b)

facilitated diffusion

c)

active transport

d)

fusion

135.

What is the movement of particles with the concentration gradient using protein "helpers"?

a)

diffusion

b)

facilitated diffusion

c)

active transport

d)

enzymatic reactions

136.

The general name for movement of substances across cell membranes without need of energy input

a)

passive transport

b)

active transport

137.
Osmosis is the movement of _____ across a membrane.
a)
food
b)
energy
c)
oxygen
d)
water
138.

Some cells move large particles out of the cell through the process of:

a)

Protein Synthesis

b)

Endocytosis

c)

Exocytosis

d)

Cytoplasmic Streaming

139.
In this image, the cell is using which type of molecular transport?
a)
Osmosis
b)
Diffusion 
c)
Endocytosis
d)
Exocytosis 
140.

The sodium potassium pump is an example of

a)

Passive Transport

b)

Active Transport

c)

Facilitated Diffusion

d)

Endocytosis

141.

Human red blood cells contain 0.9% sodium chloride as a component of their cytoplasm. What would happen if an IV solution containing 3.5% sodium chloride is introduced into a person? 

a)

The red blood cell would get bigger and burst.

b)

The red blood cell would stay the same size.

c)

The red blood cell would shrink.

d)

The red blood cell would first loose water and then absorb water.

142.

If the body can no longer make ATP, which type of transport would be impacted?

a)

Facilitated Diffusion

b)

Osmosis

c)

Active Transport

d)

Simple Diffusion

143.

Diffusion occurs when molecules

a)

move through a permanent barrier

b)

move against the concentration gradient

c)

move from high to low concentration

d)

move from low to high concentration

144.
All cells have a:
a)
Nucleus
b)
Plasma membrane
c)
Cell wall
d)
Buddy
145.
The function of the plasma membrane is....
a)
to regulate what enters and leaves the cell.
b)
fight bacteria and viruses that enter the cell.
c)
provide rigid support and protection to the cell.
d)
make sure each cell can move
146.
What do the brown structures represent?
a)
Phospholipids
b)
Glycoproteins
c)
Channel Proteins 
d)
Cyctoskeleton Filaments
147.
Maintaining a constant internal state in a changing environment.
a)
Homeostasis
b)
Active Transport
c)
Mitosis
d)
Photosynthesis
148.
Hydrophilic means...
a)
water-loving
b)
water-fearing
c)
nonpolar
d)
lipid soluble
149.
Most of the cell membrane is made of...
a)
Lipids
b)
Carbohydrates
c)
Proteins
d)
Nucleic acids
150.
What does "bilayer" mean?
a)
one layer
b)
two layers
c)
laminated
d)
bilateral
151.
What is another term for "selectively permeable"?
a)
porous
b)
completely permeable
c)
permanent
d)
semipermeable
152.
The function of the plasma membrane is....
a)
to regulate what enters and leaves the cell.
b)
fight bacteria and viruses that enter the cell.
c)
provide rigid support and protection to the cell.
d)
make sure each cell can move
153.
Hydrophilic means...
a)
water-loving
b)
water-fearing
c)
nonpolar
d)
lipid soluble
154.
Most of the cell membrane is made of...
a)
Lipids
b)
Carbohydrates
c)
Proteins
d)
Nucleic acids
155.
What does "bilayer" mean?
a)
one layer
b)
two layers
c)
laminated
d)
bilateral
156.
Hydrophilic portion of cell membrane?
a)
A
b)
C
c)
D
d)
E 
157.
Hydrophobic region of the cell membrane?
a)
E
b)
B
c)
C
d)
A 
158.
What is another term for "selectively permeable"?
a)
porous
b)
completely permeable
c)
permanent
d)
semipermeable
159.
What forms the channels and pumps in the phospholipid bilayer?
a)
carbohydrates
b)
proteins
c)
hydrophilic heads 
d)
lipids
160.
Which of the following is responsible for getting large or charged (polar) molecules across the cell membrane?
a)
E
b)
B
c)
C
d)
D
161.
What is embedded in the phospholipid bilayer?
a)
proteins
b)
salt
c)
water
162.
What forms the channels and pumps in the phospholipid bilayer?
a)
carbohydrates
b)
proteins
c)
hydrophilic heads 
d)
lipids
163.
This is a balance that organisms maintain through self-regulating adjustments
a)
bilayer
b)
homeostasis
c)
secretions
164.
True or false:  Some things are not allowed to enter the cell at all. 
a)
True
b)
False
165.
The cell is an _____ system.  It requires the constant inflow of matter and energy and outflow of waste. 
a)
closed
b)
open
c)
false
d)
circulatory
166.
Hypertonic solutions...
a)
water moves from hypotonic to hypertonic
b)
water moves from hypertonic to hypotonic
167.

This image is a model of-

a)

Flagella

b)

Nucleus

c)

Endoplasmic Reticulum

d)

Cell Membrane

168.

The function of the plasma membrane is....

a)

Vesicle with enzymes to digest waste

b)

Regulate what is transported into and out of the cell

c)

Package materials

d)

Make proteins

169.

 

What does "bilayer" mean?

a)

one layer

b)

two layers

c)

virus

d)

antibiotic

170.

Most of the cell membrane is made of...

a)

Nucleic acids

b)

Proteins

c)

Lipids

d)

Carbohydrates

171.

 

What forms the channels and pumps in the phospholipid bilayer?

a)

proteins

b)

hydrophilic heads

c)

lipids

d)

carbohydrates

172.

Hydrophobic region of the cell membrane?

a)

E

b)

B

c)

C

d)

A

173.

Hydrophilic portion of cell membrane?

a)

D

b)

C

c)

B

d)

A

174.

A ______________ is composed of a phosphate and glycerol head and 2 fatty acid chain tails. 

a)

cholesterol

b)

glycoprotein

c)

phospholipid

d)

glucose

175.

___________ allow cells to recognize each other and act like ID tags. 

a)

Carbohydrates

b)

Proteins

c)

Phospholipids

d)

Cholesterol

176.

___________ strengthens and stabilizes the cell membrane.

a)

Carbohydrates

b)

Proteins

c)

Phospholipids

d)

Cholesterol

177.

Something is ___________ ____________ when some molecules can cross the membrane while others cannot. 

a)

made of carbohydrates

b)

Selectively (or Semi) Permeable

c)

made of enzymes

d)

isotonic

178.

The _________ of the phospholipids in a cell membrane face inward towards each other because they are ___________.

a)

heads, hydrophobic

b)

heads, hydrophilic

c)

tails, hydrophobic

d)

tails, hydrophilic

179.

The _________ of the phospholipids in a cell membrane face outward because they are ___________.

a)

heads, hydrophobic

b)

heads, hydrophilic

c)

tails, hydrophobic

d)

tails, hydrophilic

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