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L6 Cell membrane

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

The phospholipid bilayer has

a)

Hydrophobic heads and Hydrophobic tails

b)

Hydrophilic heads and Hydrophobic tails

c)

Hydrophobic heads and Hydrophilic tails

d)

Hydrophilic heads and Hydrophilic tails

2.

Saturated fatty acids....

a)

Have no double bonds, pack tightly and are solid at room temperature.

b)

Have double bonds, pack loosely and are liquid at room temperature.

c)

Have no double bonds, pack loosely and are liquid at room temperature.

d)

Have double bonds, pack tightly and are solid at room temperature.

3.

"Hydrophobic regions embedded within the membrane and very strong lipid interactions" are characteristics of what type of protein.

a)

Peripheral

b)

Lipid anchored

c)

Intergral

4.

Lipids in the cell membrane that are bound to carbohydrate chains are called....

a)

Sterols

b)

Glycolipids

c)

Carbolipids

d)

Glucolipids

5.

Which of these are types of active transport

a)

Symport

b)

Osmosis

c)

Antiport

d)

Diffusion

6.

Simple passive transport is best described as.

a)

Diffusion of molecules through the cell membrane, from high to low concentration, without the need for energy

b)

Diffusion of molecules through membrane proteins, from low to high concentration, requiring energy.

c)

Diffusion of molecules through membrane proteins, from high to low concentration, without energy

d)

Diffusion of molecules through the cell membrane. From low to high concentration.

7.

Facilitated diffusion is best described as

a)

Diffusion of molecules through the cell membrane, from high to low concentration, without the need for energy

b)

Diffusion of molecules through membrane proteins, from low to high concentration, requiring energy.

c)

Diffusion of molecules through membrane proteins, from high to low concentration, without energy

d)

Diffusion of molecules through the cell membrane. From low to high concentration.

8.

Active transport is best described as...

a)

Diffusion of molecules through the cell membrane, from high to low concentration, without the need for energy

b)

Diffusion of molecules through membrane proteins, from low to high concentration, requiring energy.

c)

Diffusion of molecules through membrane proteins, from high to low concentration, without energy

d)

Diffusion of molecules through the cell membrane. From low to high concentration.

9.

The Na/Glucose pump is an example of a

a)

Uniport

b)

Symport

c)

Antiport

10.

The Na/K pump is an example of a

a)

Uniport

b)

Symport

c)

Antiport