Cell Membrane

Question 1

List the types of active transport.

Answer 1

Endocytosis
Exocytosis
Protein Pumps

Question 2

What are the 2 main differences between active and passive transport?

Answer 2

Active requires energy from the cell, and goes against the concentration gradients.
Passive doesn’t require energy from the cell and goes down the concentration gradient.

Question 3

Down the concentration gradient means…

Answer 3

to go from areas of high concentration to low concentration.

Question 4

Up the concentration gradient means..

Answer 4

to go from areas of low concentration to high concentration.

Question 5

Diffusion is

Answer 5

the movement of molecules from a high concentration to low

Question 6

Osmosis is

Answer 6

the diffusion of water through a semi permeable membrane.

Question 7

List the types of passive transport.

Answer 7

Diffusion
osmosis
Facilitated Diffusion

Question 8

How do diffusion and facilitated diffusion differ?

Answer 8

Facilitated diffusion requires protein channels.

Question 9

What is the cell membrane made of?

Answer 9

A Phospholipid bilayer
Proteins
cholesterol
carbohydrates

Question 10

Describe the properties of a phospholipid

Answer 10

Polar hydrophylic head

Non-polar hydrophobic tails