biology -efficient exchange b2

Question 1

surface area : volume ratio

Answer 1

surface area / volume

Question 2

what does rate of diffusion depend on

Answer 2

-1-distance -the shorter the distance the greater the rate
-2-concentration gradient - the greater the difference the faster the rate
-3-surface area -the greater the surface area is the faster the rate

Question 3

Aeolus

Answer 3

-large surface area
-thin walls there is less distance for diffusion
-good blood supply to maintain the gradient
-moist lining which allows gasses to disolve