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Parts of the Cell Membrane

Total questions: 26

Worksheet time: 7hrs 30mins

Name
Class
Date
1.
Cell Membrane:
a)
The protective outer layer that controls what enters and leaves the cell.
b)
Stores information on DNA molecules / Directs and controls the activities of the cell.
c)
A folded membrane that moves materials around inside cells / Also acts as the site of manufacturing materials needed by the cell.
d)
The smallest organelle with a huge job / Makes proteins, which are the building blocks of the body.
2.

What characteristic does the phospholipid bilayer have that allows smaller molecules to pass through the cell membrane.

a)

The phospholipid bilayer can easily move around (is fluid) allowing small molecules to pass through.

b)

The phospholipid bilayer can not easily move around (is static), therefore is can not allow any molecules to pass through.

c)

The phospholipid bilayer has the ability to open and close like a draw bridge.

d)

The phospholipid bilayer will only allow large particles to pass through.

3.

Select ALL that describe the cell membrane.

a)

Selectively Permeable

b)

Fluid Mosaic

c)

Embedded Proteins

d)

Phospholipid Bilayer

4.

These proteins are only found on the outside or inside surface of the cell membrane.

a)

Integral Proteins

b)

Peripheral Protein

c)

Glycoprotein

d)

Phosphate Protein

5.
Hydrophobic region of the cell membrane?
a)
E
b)
B
c)
C
d)
A 
6.
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
7.
Which of the following functions as a recognition site for interactions between cells?
a)
Phospholipids
b)
Cholesterol 
c)
Fatty acids
d)
Glycolipids
8.
What is the primary function of the plasma membrane?
a)
To produce food and energy for the cell.
b)
To protect the cell from it's surrounding.
c)
The cell using energy to move an amount of substances to another location where this substane is 
d)
Help transfer proteins to help the cell body to stay strong.
9.
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
10.
The hydrophilic regions of a membrane protein are most likely
a)
present only in muscle cells
b)
associated with the fatty acid region of the lipids
c)
either on the surface or inserted into the interior of the membrane
d)
exposed on the surface of the membrane
11.

This component of the cell membrane allows the transport of specific substances across a cell membrane.

a)

glycoprotein

b)

glycoplipid

c)

cholesterol

d)

protein channel

12.

This component of the cell membrane provides stability and flexibility for the structure.

a)

glycoprotein

b)

glycoplipid

c)

cholesterol

d)

protein channel

13.

The cell membrane is also called the __________ __________.

a)

Nucleus Membrane

b)

Plasma Membrane

c)

Phosphorous Membrane

d)

Insane Membrane

14.

The cell membrane is composed of a ...........

a)

phospholipid bilayer

b)

single layer of phospholipids

c)

carbohydrate bilayer

d)

single layer of carbohydrates

15.

What characteristic does the phospholipid bilayer have that allows smaller molecules to pass through the cell membrane.

a)

The phospholipid bilayer can easily move around (is fluid) allowing small molecules to pass through.

b)

The phospholipid bilayer can not easily move around (is static), therefore is can not allow any molecules to pass through.

c)

The phospholipid bilayer has the ability to open and close like a draw bridge.

d)

The phospholipid bilayer will only allow large particles to pass through.

16.

What is the name of the transport protein that is embedded through the entire cell membrane. This transport protein allows for movement of larger molecules in and out of the cell.

a)

Integral Proteins

b)

Peripheral Proteins

c)

Glycoproteins

d)

Phosphate Proteins

17.

Identify what part of the cell membrane that is represented by letter B.

a)

Integral Protein

b)

Peripheral Protein

c)

Phosphate Head

d)

Glycoprotein

18.

Identify what part of the cell membrane that is represented by letter A.

a)

Phospholipid Bilayer

b)

Integral Protein

c)

Cholesterol

d)

Carbohydrate Chain

19.

Which diagram is the best representation of the plasma membrane?

a)

Diagram 1

b)

Diagram 2

c)

Diagram 3

d)

Diagram 4

20.
True or False: Large molecules, such as glucose, can easily pass through the cell membrane without any help...
a)
True: They pass right through.
b)
False: They need a protein channel.
21.
What type of molecule has the most difficult time passing through the membrane? 
a)
small & hydrophobic
b)
small & hydrophilic
c)
large & hydrophobic
d)
large & hydrophilic
22.

The phosphate head of the lipid is

a)

Polar

b)

Nonpolar

23.

The Fatty acid tail of a lipid is

a)

Polar

b)

Nonpolar

24.

The cell membrane is __________ which means it allows some molecules in and keeps other molecules out.

a)

Homeostasis

b)

Selectively permeable

c)

non-selective permeable

25.

Which image correctly shows the way phospholipids arrange themselves in the cell (plasma) membrane?

a)
b)
c)
d)
26.

Structure A in the diagram is

a)

cholesterol

b)

phospholipid

c)

glycoprotein

d)

channel protein

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