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AP Biology Cell Unit Review

Total questions: 42

Worksheet time: 44mins

Name
Class
Date
1.
A phospholipid has 2 parts. What are they called? 
a)
Hydrophilic Head, Hydrophobic Tail 
b)
Hydrophobic Head, Hydrophilic Tail 
2.
A ______________ is composed of a phosphate and glycerol head and 2 fatty acid chain tails. 
a)
phospholipid 
b)
Carbohydrate
c)
Cholesterol 
d)
Protein 
3.
A cell in an isotonic solution will
a)
swell
b)
shrink
c)
stay the same size
d)
impossible to tell
4.
Food is moved into the cell by ________________________.
a)
endocytosis
b)
pinocytosis
c)
exocytosis
d)
osmosis
5.
This picture represents which type of cellular transport?
a)
passive transport
b)
endocytosis
c)
exocytosis
d)
osmosis
6.
A cell in a hypotonic solution will
a)
swell
b)
shrink 
c)
stay the same size
d)
impossible to tell
7.
In what direction do particles naturally diffuse?
a)
Up the concentration gradient
b)
Down the concentration gradient
c)
Across the concentration gradient
d)
Over the river and through the woods
8.
Hydrophobic region of the cell membrane?
a)
E
b)
B
c)
C
d)
A 
9.

When particles move from low to high concentration

a)

Passive Transport

b)

Active Transport

10.
_______________  requires energy in the form of ATP
a)
Osmosis
b)
Active transport
c)
Facilitated diffusion
d)
Passive transport
11.
Where are ribosomes produced?
a)
Nucleolus
b)
Endoplasmic reticulum
c)
Golgi body
d)
Vessicle
12.

Where are lipids formed?

a)

Rough ER

b)

Smooth ER

c)

Nucleus

d)

Ribosomes

13.

Which molecule will cross a cell membrane most easily?

a)

A large molecule such as hemoglobin

b)

A polar molecule such as caffeine

c)

A small molecule like carbon dioxide

d)

Genetic material such as DNA

14.
Which of the following would be an example of paracrine signaling in animals?
a)
neurotransmitter acetylcholine
b)
hormone epinephrine
c)
neurotransmitter norepinephrine
d)
growth factor
15.
Which of the following can activate a protein by transferring a phosphate group to it?
a)
cAMP
b)
G Protein
c)
protein kinase
d)
protein phosphatase
16.
Signal amplification is most often achieved by
a)
an enzyme cascade
b)
binding of multiple signals
c)
branching pathways
d)
action of adenylyl cyclase
17.
What does a protein kinase do?
a)
removes phosphates
b)
transfers phosphates from ATP to proteins
c)
activates an enzyme
18.
What does a protein phosphatase do?
a)
removes phosphates
b)
transfers phosphates from ATP to proteins
c)
activates an enzyme with a signal molecule
19.
Which of the following is a chemical message that usually travels through the bloodstream to target cells?
a)
hormone
b)
local regulator
c)
endocrine cell
20.
a signal molecule that transmits nerve impulses across synapses
a)
neuron
b)
neurotransmitter
c)
nerve
d)
action potential
21.
nerve impulse
a)
action potential
b)
resting potential
c)
membrane potential
d)
synapse
22.
Location at which a neuron can transfer an impulse to another cell with the use of neurotransmitters is called __________.
a)
myelin sheath
b)
axon
c)
threshold
d)
synapse
23.

As the neuron fires, there's a reversal in _____ as the axon undergoes ________.

a)

direction, depolarization

b)

charge, depolarization

c)

direction, repolarization

d)

charge, repolarization

24.

Which of the following organisms likely does not have a mitochondria?

a)

Sunflower

b)

Mushroom

c)

Chicken

d)

Bacteria

25.

True or false: The ribosome is a membrane-bound organelle.

a)

True

b)

False

26.
_____ are located near the nucleus, help organize cell division, and are not found in plant cells.
a)
vacuoles
b)
centrioles
c)
chloroplasts
d)
organelles
27.

Which cell is in a hypertonic environment?

a)

A

b)

B

c)

C

d)

None of them are hypertonic

28.

Assuming that the purple molecules are too large to pass through the membrane, what would happen to the water level as a result of osmosis?

a)

The water level would rise on the A side

b)

The water level would rise on the B side

c)

The water level would remain constant

d)

The water level would drop on the A side.

29.

White blood cells engulf bacteria using _______________.

a)

phagocytosis

b)

pinocytosis

c)

osmosis

d)

receptor-mediated exocytosis

30.

____________ & _________________ are organelles that definitely arose from endosymbiosis.

a)

Nucleus and cell membrane

b)

Chloroplast and mitochondria

c)

Mitochondria and nucleus

d)

Cell wall and chloroplast

31.

Why do mitochondria and chloroplasts have DNA in them?

a)

They were once prokaryotic cells.

b)

They produce their own DNA through photosynthesis.

c)

They receive the DNA from the nucleus.

d)

They process the DNA of the cell.

32.
As a cell becomes larger, its
a)
surface area increases faster than its volume.
b)
volume increases faster than its surface area
33.
High Surface area to volume ratio allows cells to do what quickly?
a)
Move materials around inside the cell
b)
Move materials in and out of the cell 
c)
Communicate to other cells
d)
Divide
34.
Prokaryotes are classified as belonging to two different domains. What are they?
a)
Bacteria & Protista
b)
Bacteria & Archaea
c)
Bacteria & Eukarya
d)
Archaea & Protista
35.
Lysosome:
a)
The smallest organelle with a huge job / Makes proteins, which are the building blocks of the body.
b)
Small sacks with pores / Contains digestive enzymes that get rid of waste, worn-out cell parts, and captured invaders.
c)
Bean-shaped organelle filled with folded membranes / Breaks down glucose to release energy for cell functions
d)
Stacks of pancake-like membranes that package materials to ship out of the cell.
36.
The plasma membranes of winter wheat are able to remain fluid when it is extremely cold by
a)
synthesizing new forms of cholesterol
b)
closing protein channels
c)
decreasing the number of hydrophobic proteins present
d)
replacing saturated fatty acids with unsaturated fatty acids
37.
If aquaporins are injected into the membranes of epithelial cells that line blood vessels,
a)
the flow of Na+ through aquaporins will increase
b)
the intracellular concentration of K+ will increase
c)
the membranes will become more permeable to water
d)
the electrical properties of the cells will be altered
38.
A saltwater snail is placed in freshwater. What happens to its cells?
a)
They shrink
b)
They swell
c)
Nothing happens
39.
A HYPOTONIC solution has a ______ concentration of solute than the cell and the cell will _____ when placed into a hypotonic solution.
a)
lower; swell
b)
lower; shrink
c)
higher; swell
d)
higher; shrink
40.
What is the approximate sucrose concentration in the potato core?
a)
.43 M
b)
.30 M
c)
0.0 M
d)
1.0 M
41.
The picture is an example of...
a)
active tranport
b)
passive transport
c)
diffusion
d)
osmosis
42.
Special proteins help move particles, but NO energy is needed. This is..
a)
facilitated diffusion
b)
exocytosis
c)
active transport
d)
equilibrium

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