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Unit 2 Cell Biology Part II- Cell Membrane

Total questions: 48

Worksheet time: 16mins

Name
Class
Date
1.
What is another term for "selectively permeable"?
a)
porous
b)
completely permeable
c)
permanent
d)
semipermeable
2.
Most of the cell membrane is made of...
a)
Lipids
b)
Carbohydrates
c)
Proteins
d)
Nucleic acids
3.

What forms the channels and pumps in the phospholipid bilayer to transport molecules across the membrane?

a)

carbohydrates

b)

proteins

c)

hydrophilic heads

d)

lipids

4.
Which of the following is NOT part of the cell membrane?
a)
Lipids
b)
Carbohydrates
c)
Proteins
d)
Nucleic Acids
5.
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
6.

Part of the plasma membrane responsible for cell recognition/identification-

a)

C

b)

E

c)

B

d)

D

7.
Protein...
a)
A
b)
B
c)
C
d)
D
8.
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
9.
Hydrophilic portion of cell membrane?
a)
A
b)
C
c)
D
d)
E 
10.
Hydrophobic region of the cell membrane?
a)
E
b)
B
c)
C
d)
A 
11.

Hydrophobic means...

a)

water-loving

b)

water-fearing

c)

nonpolar

d)

lipid soluble

12.
This experiment illustrates which property of the cell membrane?
a)
impermeability
b)
selective permeability
c)
insolubility
d)
complete permeability
13.
Which molecule is too large to cross the cell membrane?
a)
water
b)
glucose
c)
O2
d)
starch
14.

Which molecule is too large to cross the cell membrane?

a)

carbon dioxide

b)

sodium ions

c)

amino acids

d)

DNA

15.

A rigid structure that surrounds the cell membrane for support and protection of the cell.

a)

Chloroplasts

b)

Cell Wall

c)

Cell Membrane

d)

Cytoplasm

16.

Function of the cell membrane to block the movement of certain sizes, shapes and kinds of particles from entering the cell.

a)

permeable

b)

impermeable

c)

semi-permeable

17.
Which of the following cells would have the highest surface area to volume ratio?
a)
1
b)
2
c)
3
d)
they are all the same
18.

Which of the following molecules pass easily through the cell membrane, requiring little extra help or energy? Select all that apply.

a)

sodium

b)

glucose

c)

oxygen

d)

carbon dioxide

19.

Which of the following is a true statement?

a)

Cells are small because it allows a faster rate of chemical exchange.

b)

Cells are small because it allows a slower rate of chemical exchange.

c)

Cells are large because it allows a faster rate of chemical exchange.

d)

Cells are large because it allows a slower rate of chemical exchange.

20.
The compounds in biological membranes that form a barrier to the movement of hydrophilic materials across the membrane are 
a)
integral membrane proteins
b)
carbohydrates
c)
lipids
d)
peripheral membrane proteins
21.
In biological membranes, the phospholipids are arranged in a _______, with the_______.
a)
bilayer; fatty acids pointing toward each other
b)
bilayer; fatty acids facing outward
c)
single layer; fatty acids facing the interior of the cell
d)
single layer; phosphorus-containing region facing the interior of the cell
22.
What is "F"?
a)
Fatty Acid Tail
b)
Carbohydrate Chain
c)
Glycoprotein
d)
Peripheral Protein
23.
What is the function of "C"?
a)
Involved in cell-to-cell recognition
b)
Attract water
c)
Makes up bilayer
d)
Repels water
24.
What is the function of "B"?
a)
Help transport certain materials across the cell membrane
b)
Makes up bilayer
c)
Involved in cell-to-cell recognition
d)
Repels Water
25.
What is the function of the cell membrane?
a)
It regulates which materials enter and leave the cell.
b)
It contains the genetic information for the cell.
c)
It manufactures proteins for the cell.
d)
It generates chemical energy for the cell.
26.
What is the structure of a phospholipid in the cell membrane?
a)
a "water-fearing" head and two "water-loving" tails
b)
two "water-loving" heads and a "water-fearing" tail
c)
a "water-loving" head and two "water-fearing" tails
d)
two "water-fearing" heads" and a "water-loving" tail
27.
What does the "fluid mosaic model" mean about the cell membrane?
a)
It can dissolve into fluid.
b)
The cell is mostly made of mosaic molecules.
c)
It looks like a flexible pattern.
d)
Somebody else should name these things.
28.

As a cell grows, the surface area to volume ratio...

a)

Increases

b)

Decreases

c)

Stays the same

29.

Small cells have a...

a)

Higher SA:V ratio

b)

Smaller SA:V ratio

30.

Place the following shapes in order of SMALLEST to LARGEST SA:V ratio.

You shouldn't have to do math here

a)

C

b)

B

c)

A

d)

D

1)
2)
3)
4)
31.

Which "cell" would produce the most waste?

a)

C

b)

B

c)

A

d)

D

32.

Alveoli in the lungs have a higher surface area to volume ratio. This means they exchange oxygen and CO2 at a ....

a)

fast rate

b)

slow rate

33.
Microvilli are tiny projections that extend off the cell to increase the Surface Area.  What purpose might that serve? 
a)

Increased absorption

b)

Looks like a cool hairstyle

c)

Help with cell division

d)

Decreased oxygen use

34.

Which cells are more efficient at obtaining nutrients?

a)

Small Cells

b)

Medium Size Cells

c)

Large Cells

d)

X-Large Cells

35.
The amount of nutrients needed is determined by...
a)

The cell's volume

b)

The cell's surface area

c)

The cell's nucleus

d)

The cell's color

36.

Which cell has a LOWER SA:V?

a)

A

b)

B

37.
How can surface area (SA) be increased? 
a)
Grow larger
b)
Divide into smaller pieces
38.
For cells to stay alive they require what type of SA:V?
a)

Large SA, Large V

b)

Small SA, Large V

c)

Large SA, Small V

d)

Small SA, Small V

39.
This image shows how materials move into various sized cells in a given amount of time.... why does one square cell have more pink coloring than the others? 
a)

The surface area was too large to get through

b)

The volume of the bigger cells was too large for the dye to get through

c)

The large cells had less volume

d)

The dye leaked out of the big squares

40.

Mammals lose heat from the surface of their skin. Which of these--elephant or mouse--loses heat fastest? Hint: think about their SA/V ratios.

a)

Elephant because it has more volume to heat up 

b)

Elephant because it has larger ears to block the sun

c)

Mouse because it has more surface area per volume

d)

mouse because it doesn't have as much heat

41.
Which type of movement has channels that help large molecules move through the cell membrane?
a)
active transport
b)
diffusion
c)
osmosis
d)
facilitated diffusion
42.

Define plasma membrane

a)

lipid that helps minimize effects of temperature

b)

only on the outer surface of the plasma membrane and are attached to proteins or lipids; form distinctive cellular markers

c)

flexible boundary of a cell that separates a cell from its surroundings

d)

may extend partway into the plasma membrane, cross the membrane entirely, or be loosely attached to its inside or outside face

43.

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

44.

The phospholipid tail is _____________ & _____________

a)

Hydrophilic

b)

Hydrophobic

c)

Polar (+)

d)

non-polar

45.

Located on the cell membrane surface, nucleus membrane or other cellular organelle membrane - they can bind to corresponding proteins to initiate cellular signaling pathways (reactions).

a)

carrier protein

b)

channel protein

c)

receptor protein

46.
What does the "fluid mosaic model" mean about the cell membrane?
a)
It can dissolve into fluid.
b)
The cell is mostly made of mosaic molecules.
c)
It looks like a flexible pattern made up of different parts.
d)
Somebody else should name these things.
47.
Small, non-polar molecules like CO2 and O2 and NO can pass through the cell membrane using what type of transport?
a)
Diffusion
b)
Osmosis
c)
Facilitated Diffusion
d)
Endocytosis
48.

a type of transport protein, acts like a pore in the membrane that lets water molecules or small ions through quickly

a)

CHANNEL PROTEIN

b)

PHOSPHOLIPID

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