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IB Biology - Membrane Transport

Total questions: 35

Worksheet time: 25mins

Name
Class
Date
1.
Which of the following is NOT part of the cell membrane?
a)
Lipids
b)
Carbohydrates
c)
Proteins
d)
Nucleic Acids
2.
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
3.
Phospholipid tails are...
a)
Hydrophobic lipids
b)
Hydrophilic lipids
c)
hydrophobic phosphate
d)
hydrophilic phosphate
4.
True or False:  Regulating what enters and leaves the cell helps the cell maintain homeostasis. 
a)
True
b)
False
5.
What is the name for a molecule that has a polar head region and a hydrophobic tail region?
a)
Bihydrophicity
b)
Amphipathic
c)
Hydrophilic
d)
Dipolarity
6.
How many layers is the lipid bilayer?
a)
1
b)
2
c)
3
d)
4
7.

The plasma membrane is best described as ___________ permeable.

a)

selectively permeable

b)

completely permeable

c)

impenetrable

d)

unimportant

8.

The _________________ model describes the structure of the plasma membrane.

a)

fluid mosaic

b)

double helix

c)

Bohr

d)

distribution

9.

What does G represent?

a)

phosphlipids

b)

carbohydrates

c)

membrane proteins

d)

cholesterol

10.

During diffusion, substances move

a)

down a concentration gradient.

b)

up a concentration gradient.

11.

_____________ diffusion can be used by the cell to move larger polar molecules and ions across the membrane.

a)

facilitated

b)

simple

c)

complex

d)

helper

12.

The cholesterol associated with membranes

a)

is attached to proteins and extends into the environment surrounding the cell

b)

helps stabilize the membrane at body temperature

c)

is an abnormality resulting from a diet high in cholesterol

d)

both a and c

13.

Which is true about passive transport?

a)

molecules move from low to high

b)

ATP is required

c)

molecules move from high to low

d)

ATP is not required

14.

Which is NOT another name for the cell membrane?

a)

fluid mosaic model

b)

cell wall

c)

plasma membrane

d)

phospholipid bilayer

15.

Hypertonic solutions

a)

make cells shrink

b)

make cells swell

16.

Hypotonic solutions

a)

make cells shrink

b)

make cells swell

17.

Which is not a form of active transport (APPS)?

a)

osmosis

b)

phagocytosis

c)

pinocytosis

d)

sodium potassium pump

18.

Small polar molecules like O2 and CO2enter a cell through

a)

diffusion

b)

osmosis

c)

facilitated diffusion

19.

Phagocytosis and pinocytosis are both forms of

a)

endocytosis

b)

exocytosis

20.

During pinocytosis, a cell

a)

takes in solid food (eats)

b)

takes in liquids (drinks)

21.
What forms the channels and pumps in the phospholipid bilayer?
a)
Carbohydrates
b)
Proteins
c)
Hydrophilic heads 
d)
Lipids
22.
The picture is an example of...
a)
active transport
b)
passive transport
c)
diffusion
d)
osmosis
23.
What does a cell need to transport particles by active transport?
a)
Sun
b)
Wind
c)
Energy
d)
Channels
24.
Which of the following statements is true for exocytosis?
a)
It helps in the intake of large materials by the cell.
b)
It occurs without the help of any cell organelle.
c)
It is a form of active transport.
d)
It does not require energy.
25.
Cell drinking is referred to as
a)
Phagocytosis
b)
Pinocytosis
c)
Exocytosis
d)
Endocytosis
26.
 Engulfing of bacteria by white blood cells is called as
a)
Phagocytosis
b)
Pinocytosis
c)
Exocytosis
d)
Endocytosis
27.
Endocytosis is defined as
a)
the movement of large molecules from the inside of the cell to the outisde of the cell using channel proteins. 
b)
the movement of large molecules from the inside of the cell to the outisde of the cell membrane vesciles. 
c)
 the movement of large molecules from the outside of the cell to the inside of the cell using membrane vesciles.
d)
the movement of large molecules from the outside of the cell to the inside of the cell using channel proteins. 
28.
In this image, the cell is using which type of molecular transport?
a)
Osmosis
b)
Diffusion 
c)
Endocytosis
d)
Exocytosis 
29.
What is the term that means "a condition in which the concentration of a substance is equal throughout a space"?
a)
equilibrium
b)
exocytosis
c)
endocytosis
d)
phospholipid
30.
The sodium potassium pump usually pumps
a)
potassium out of the cell 
b)
sodium out of the cell 
c)
sodium into the cell 
d)
both potassium and sodium into the cell 
31.
The sodium-potassium pump usually pumps
a)
only potassium ions and sugar molecules
b)
potassium ions out of the cell
c)
sodium ions into the cell
d)
 potassium ions into the cell
32.
Which ions are involved in an action potential?
a)
Na; Cl
b)
Na; K
c)
K; Cl
d)
Na; Ca
33.
The sodium potassium pump restores the resting potential. By which process does this work? 
a)
Osmosis
b)
Diffusion
c)
Facilitated diffusion
d)
Active transport
34.
In resting potential, neurons have more _________ on the outside of the cell membrane.
a)
K+
b)
NaCl
c)
Na+
d)
Cl-
35.

An electrical impulse within a single neuron is called a

a)

synapse

b)

membrane potential

c)

action potential

d)

cell body

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