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AP Biology Cell Unit

Total questions: 59

Worksheet time: 59mins

Name
Class
Date
1.
_____ are cells that enclose their DNA in nuclei.
a)
Phototophylites
b)
Prokaryote
c)
Eukaryote
d)
LocoKaryotes
2.
In general, Eukaryota cells (including plant and animal cells) are ____ _____ than Prokaryotic cells. 
a)
obviously stronger
b)
less complex
c)
more complex
d)
obviously weaker
3.
Most prokaryotic cells produce a strong supporting layer around the cell membrane known as a(n) ___ ____. 
a)
plastic cellotite
b)
cell wall
c)
selective argroleme
d)
vacuole pyrite
4.
The ____ ____ regulates what enters and leaves the cell and also protects and supports the cell.
a)
Golgi Apparatus
b)
ER
c)
cell wall
d)
cell membrane
5.

This egg has shrunk, what type of solution was it placed in?

a)

hypotonic solution

b)

hypertonic solution

c)

isotonic solution

6.
What type of solution allows water to enter the plant cell?
a)
hypotonic solution
b)
hypertonic solution
c)
isotonic solution
d)
active transport
7.
What is the difference between active and passive transport?
a)
Active does not need energy and passive uses ATP (energy)
b)
Active uses ATP (energy) and passive does not need energy
c)
Active stores transport proteins and passive releases 
d)
Active uses hormones and passive does not 
8.
What molecule plays and important role in controlling cell membrane fluidity? 
a)
Insulin
b)
Testosterone
c)
Triglyceride
d)
Cholesterol 
9.
Which of the following factors does NOT determine the speed of diffusion? 
a)
Temperature
b)
Diameter
c)
pH
d)
Concentration Gradients 
10.
_________ proteins are integral membrane proteins that form channels across the membrane through which some substances can pass. 
a)
Anchored
b)
Gated
c)
Embeded
d)
Channel 
11.

Which type of biological macromolecule is the main component of the plasma membrane?

a)

carbohydrate

b)

lipid

c)

protein

d)

nucleic acid

12.

This image is an example of a phospholipid. Which part of a phospholipid is HYDROPHOBIC?

a)

the phosphate "head"

b)

the lipid "tails"

13.

Where can carbohydrates be found when part of a plasma membrane?

a)

On the outside of the membrane

b)

On the inside of the membrane

c)

Embedded part of the way into the membrane

d)

Embedded the whole way through the membrane

e)

All of the above

14.

Where can PROTEINS be found when part of a plasma membrane?

a)

On the outside of the membrane

b)

On the inside of the membrane

c)

Embedded part of the way into the membrane

d)

Embedded the whole way through the membrane

e)

All of the above

15.

What is the function of cholesterol in a plasma membrane?

a)

To make the membrane flexible

b)

To control the consistency of the phospholipid bilayer during temperature changes.

c)

To attract water molecules

d)

To allow nutrients and other essential molecules into the cell

16.

What does "hydrophobic" mean?

a)

water loving, associates with water

b)

water fearing, does not associate with water

c)

a world war II submarine

d)

an example would be solutes like sugar or salt

17.

What does "hydrophilic" mean?

a)

water loving, associates with water

b)

water fearing, does not associate with water

c)

a world war II submarine

d)

an example would be solutes like oil or fat

18.
True or false:  Regulating what enters and leaves the cell helps the cell maintain homeostasis. 
a)
True
b)
False
19.
True or false:  Some things are not allowed to enter the cell at all. 
a)
True
b)
False
20.

If a cells  Ψp\Psi p = 3 bars and its  Ψs\Psi s = -4.5 bars, what is the resulting  Ψ\Psi  ?

a)

-7.5

b)

7.5

c)

-1.5

d)

1.5

21.

A cell with a water potential of -1.5 bars is placed in a beaker of sugar water with Ψs\Psi s  = -4.0 bars.  In which direction will the net flow of water be?

a)

Out of the cell

b)

Into the cell

c)

Both into and out of the cell

d)

Neither into nor out of the cell

22.

A cell with a water potential of -1.5 bars is placed in a beaker of sugar water with  Ψs\Psi s  = 1.5 bars.  In which direction will the net flow of water be?

a)

Into the cell

b)

Out of the cell

c)

No net flow of water

23.
Why can't you drink salt water?
a)
It's hypertonic to your cells
b)
It's hypotonic to your cells
c)
It's isotonic to your cells
d)
It's paratonic to your cells
24.
Large bodies of water do not quickly fluctuate in temperature. Why?
a)
Water is a solvent.
b)
Water has a high heat capacity.
c)
Water acts as a buffer.
d)
Water is non-polar.
25.
The tightness across the surface of water that enables paper clips to float is ____________.
a)
adhesion
b)
capillary action
c)
surface tension
d)
polarity
26.
Which statement explains why water molecules stick together?
a)
both sides are negative
b)
one side has a positive charge and the other side has a negative charge
c)
one side has a negative charge adn the other side has a neutral charge
d)
both sides are positive
27.
What characteristic defines this organism as prokaryotic?
a)
Ability to move
b)
Ability to respond
c)
Shape and size
d)
Lacking of membrane-bound organelles
28.
Which cells are more efficient at obtaining nutrients?
a)
Small Cells
b)
Medium Size Cells
c)
Large Cells
d)
X-Large Cells
29.
The absorption of nutrients is determined by...
a)
The cell's volume
b)
The cell's surface area
c)
The cell's ribosomes
d)
The cell's DNA
30.

The theory of Endosymbiosis explains

a)

The origin of eukaryotes

b)

How bacteria live

c)

How species develop

d)

Why cells rely on one another

31.

____________ & _________________ 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

32.
Theory that says eukaryotic cells formed from symbiosis among several different prokaryotes.
a)
Natural Selection
b)
Biogenesis Theory
c)
Evolutionary Theory
d)
Endosymbiotic Theory
33.
The image below shows a polymer of glucose molecules. What type of macromolecule is this?
a)
carbohydrate
b)
protein
c)
lipid
d)
nucleic acid
34.
What type of macromolecule is shown in the image below?
a)
Carbohydrate
b)
Nucleic Acid
c)
Fatty Acid
d)
Protein
35.
What is the monomer of proteins?
a)
monosaccharides
b)
amino acids
c)
phospholipids
d)
nucleotide
36.
Larger polymers are formed when monomers are joined together by a _______ reaction.
a)
dehydration synthesis
b)
digestion
c)
hydrolysis
d)
redox
37.
Identify the macromolecule in the image below.
a)
carbohydrate
b)
nucleic acid
c)
protein
d)
lipid
38.
How are the subunits of proteins linked together?
a)
ionic bonds
b)
amino acids
c)
monomers
d)
peptide bonds
39.

Uses glucose and oxygen to produce ATP

a)

chloroplast

b)

mitochondria

c)

ribosomes

d)

Golgi apparatus

40.

Site of protein synthesis.

a)

Golgi apparatus

b)

ribosomes

c)

mitochondria

d)

nucleolus

41.

Processes and packages proteins for cellular export

a)

Golgi apparatus

b)

Rough Endoplasmic reticulum

c)

ribosomes

d)

Smooth endoplasmic reticulum

42.

Site of photosynthesis

a)

mitochondria

b)

central vacuole

c)

ribosomes

d)

chloroplast

43.

Maintains shape, acts as tracks for organelles to move, etc.

a)

plasmodesmata

b)

cytoskeleton

c)

cytosol

d)

Endoplasmic reticulum

44.

Digests and recycles food and organelles

a)

lysosomes

b)

vesicles

c)

Rough ER

d)

mitochondria

45.

Sac that stores materials

a)

vacuoles

b)

lysosomes

c)

peroxisomes

d)

ribosomes

46.

Site of cellular respiration.

a)

chloroplast

b)

mitochondria

c)

Golgi apparatus

d)

nucleus

47.

Interconnected highway containing ribosomes that aids in protein production and modification

a)

Rough ER

b)

Smooth ER

c)

Golgi apparatus

d)

mitochondria

48.
The sodium-potassium pumps requires energy to move ions across the cell membrane against their concentration gradient so it is a type of
a)
active transport
b)
osmosis
c)
diffusion
d)
facilitated diffusion
49.
 Engulfing of bacteria by white blood cells is called as
a)
Phagocytosis
b)
Pinocytosis
c)
Exocytosis
d)
Endocytosis
50.
If you looked at red blood cells under a microscope and saw the blood cells exploded, what would you say happened?
a)
The cells were placed in a hypotonic solution.
b)
the solution was isotonic.
c)
The solution was hypertonic.
51.
A shrinking of the cytoplasm away from the wall due to outward osmotic flow of water
a)
turgor pressure
b)
hemolysis
c)
Osmotic pressure
d)
plasmolysis
52.
What is it called when molecules move across the cell membrane from an area of high concentration to an area of low concentration through a carrier protein?
a)
Diffusion
b)
Osmosis
c)
Active Transport
d)
Facilitated Diffusion
53.
This picture represents which type of cellular transport?
a)
passive transport
b)
endocytosis
c)
exocytosis
d)
osmosis
54.
Which transport does not require energy?
a)
Passive
b)
Active 
55.
Which form of active transport is being shown? (Inside of  the cell is tan colored) 
a)
Facilitated Diffusion
b)
Exocytosis
c)
Endocytosis
d)
Receptor-mediated endocytosis
56.

Small cells that have large surface area to volume ratios, are very efficient.

a)

True

b)

False

57.

How would the cell in the image below be classified?

a)

Gram + Cocci

b)

Gram + Bacillus

c)

Gram - Cocci

d)

Gram - Bacillus

58.

This bacterium is considered

a)

A gram + spirllium

b)

A gram + bacillus

c)

A gram - bacillus

d)

A gram - cocci

59.

Gram - bacterial infections are more difficult to treat with antibiotics.

a)

True

b)

False

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