Describe and explain two ways in which alveoli in the mammalian lung are adapted for efficient gaseous exchange
-
Alveoli in the mammalian lung are thin walled to allow the quick passage of gases, for example oxygen and carbon dioxide.
-
Alveoli in the mammalian lung have a large surface area which allows for the diffusion of multiple gas molecules simultaneously, thus increasing the speed of diffusion across their surface.
GA
Related Biology A Level answers
All answers ▸How do alveoli create a surface for efficient gas exchange?
How do i approach a long answer question in order to gain full marks?
Describe and explain the role of positive feedback in an action potential
a) Name a hormone secreted by the ovaries (1 mark). b) A female takes a contraceptive pill that increases the body's levels of progesterone. Explain what effects this has on the female's body and what effects that it has on her other hormones (3 marks)