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etG - membrane 12.2.24

Total questions: 15

Worksheet time: 13mins

Name
Class
Date
1.

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

a)

carbohydrate

b)

lipid

c)

protein

d)

nucleic acid

2.
What is NOT TRUE about the cell membrane?
a)
It controls what enters and leaves the cell
b)
Semipermeable
c)
Phospholipid bilayer
d)
Contains digestive enzymes
3.
What forms the channels and pumps in the phospholipid bilayer?
a)
carbohydrates
b)
proteins
c)
hydrophilic heads 
d)
lipids
4.
True or false:  Regulating what enters and leaves the cell helps the cell maintain homeostasis. 
a)
True
b)
False
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.
Something is ___________ ____________
when some molecules can cross the membrane while others cannot. 
a)
Selectively (or Semi) Permeable 
b)
Totally Transparent
c)
Liquid Licorice 
d)
Heavily Patrolled 
7.
A phospholipid has 2 parts. What are they called? 
a)
Hydrophilic Head, Hydrophobic Tail 
b)
Hydrophobic Head, Hydrophilic Tail 
8.
"Water Loving"
a)
Hydrophobic
b)
Hydrophilic 
c)
Hydroelectric 
d)
Hydroloric
9.

In a lipid bilayer, ___________ fatty acid tails face each other within the bilayer and form a region that excludes water.

a)

A. Hypotonic

b)

B. Hypertonic

c)

C. Hydrophilic

d)

D. Hydrophobic

10.
Question Image

Match the following:

a)

stabilizes and maintains flexibility of cell membrane

1.

Cholesterol

b)

2 layers; allows small & non-polar molecules to pass through the membrane

2.

Phospholipid bilayer

c)

regulates what goes in and out of the cell

3.

Plasma or Cell Membrane

d)

allows large and polar molecules to pass through the membrane

4.

Transport or Channel Proteins

e)

located outside of the membrane; helps with cell communication and cell-to-cell connections

5.

Carbohydrates

11.

In the diagram, what is letter A?

a)

Phospholipid

b)

Phospholipid bilayer

c)

Cholesterol

d)

Carbohydrate

e)

Carrier or transport protein

12.

In the diagram, what is letter G?

a)

Phospholipid

b)

Phospholipid bilayer

c)

Cholesterol

d)

Carbohydrate

e)

Carrier or transport protein

13.

In the diagram, what is letter E?

a)

Phospholipid

b)

Phospholipid bilayer

c)

Cholesterol

d)

Carbohydrate

e)

Carrier or transport protein

14.

In the diagram, what is letter D?

a)

Phospholipid

b)

Phospholipid bilayer

c)

Cholesterol

d)

Carbohydrate

e)

Carrier or transport protein

15.

What is a question you have about the cell membrane?

4 lines