Diffusion 1.3.1

Question 1

What are some factors affecting the rate of diffusion?

Answer 1

Membrane surface area,
Temperature,
Concentration gradient.

Question 2

What are exchange surfaces?

Answer 2

Surfaces adapted to maximising the efficiency of gas and solute exchange across them.

Question 3

What are some properties of exchange surfaces?

Answer 3

Constant blood supply,
Thin membrane,
Ventilation,
Large surface area.

Question 4

What are some examples of exchange surfaces?

Answer 4

Small intestine,
Lungs,
Gills,
Roots,
Leaves.