Transport across the cell memberane

Question 1

Question 1

What is the function of the Cell membrane?

Answer 1

The cell membrance contols the movement of materials in and out of the cell.

Question 2

Question 2

Name 1 and 2

Answer 2

Question 3

Give the definition of Passive transport and give examples.

Answer 3

I can state that passive transport occurs down a concentration gradient and does not require energy. Examples of passive transport are diffusion and osmosis.

Question 4

Define diffusion

Answer 4

I can state that diffusion is the movement of molecules down a concentration gradient from a higher to a lower concentration

Question 5

Name the molecules that move by diffusion.

Answer 5

I can explain diffusion of important substances such as glucose, carbon dioxide and oxygen in terms of their concentration gradients

Question 6

Define osmosis

Answer 6

I can state that osmosis is the movement of water molecules from a higher water concentration to a lower water concentration through a selectively permeable membrane.

Question 7

What will happen in these differnet water concentrations?

Answer 7

a- cell bursts

b - no change

c- cell shrinks

Question 8

What names do we give to 1,2 and 3

Answer 8

1 is TURGID

3 is PLASMOLYSED