4

Question 1

What materials diffuse through the plasma membrane by simple diffusion?

Answer 1

Materials that diffuse through the plasma membrane by simple diffusion include lipid-soluble compounds (such as alcohols fatty acids and steroids) and dissolved gases (like oxygen and carbon dioxide).

Question 2

What factors affect channel-mediated diffusion?

Answer 2

Factors affecting channel-mediated diffusion include size charge and interaction with the channel (leak channels).

Question 3

What materials pass through the membrane using channel mediated diffusion?

Answer 3

Water-soluble compounds and ions