1 Define the process of diffusion in terms of the particles involved.
[2 marks]
2
a Explain why diffusion takes place faster when there is an increase
in temperature.
[3 marks]
b Explain why so many cells have folded membranes along
at least one surface.
[2 marks]
3 Describe the process of diffusion occurring in each of the following
statements. Include any adaptations that are involved.
a Digested food products move from your gut into the
bloodstream.
[3 marks]
b Carbon dioxide moves from the blood in the capillaries
lungs to the air in the lungs.
c Male moths can track down a mate from up to 3 miles away
because of the special chemicals produced by the female. [3 marks]
of your
[3 marks]