AP BIOLOGY

ANIMAL PHYSIOLOGY

GAS EXCHANGE IN HUMANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
select all that increase diffusion rate
A
high concentration gradient
B
high surface area
C
low concentration gradient
D
short diffusion distance
Explanation: 

Detailed explanation-1: -The greater the difference in concentration, the quicker the rate of diffusion. The higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly. The greater the surface area, the faster the rate of diffusion.

Detailed explanation-2: -The rate of diffusion is affected by the concentration gradient, membrane permeability, temperature, and pressure. Diffusion takes place as long as there is a difference between the concentrations of a substance across a barrier.

Detailed explanation-3: -distance-if the diffusion distance is small, diffusion happens faster because the particles do not have as far to travel.

Detailed explanation-4: -What factors affect the rate of diffusion in cells? The rate of diffusion in cells is affected by factors such as temperature, concentration gradient, size of the molecule, and the presence of a membrane.

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