Cell Membranes are Pretty Clever

Question 1

How are they clever?

Answer 1

Because they hold the cell together but they stuff in and out as well

Question 2

How do cells move in and out of cells?

Answer 2

By diffusion, osmosis and active transport

Question 3

What kind of molecules can diffuse through cell membranes ?

Answer 3

Very small molecules

Question 4

What are some examples of very small molecules?

Answer 4

Glucose, amino acids, water and oxygen

Question 5

What can fit through membranes?

Answer 5

Big molecules

Question 6

What are some examples of big molecules?

Answer 6

Starch and proteins

Question 7

How is it similar to diffusion in air?

Answer 7

Particles flow through the cell membrane when there’s a higher concentration where there’s a lower concentration

Question 8

Which ways do they go and why?

Answer 8

Both ways as there only moving about randomly

Question 9

What happens if there are a lot more particles on one side of the membrane?

Answer 9

There’s a net (overall) movement from that side