1) Diffusion is the movement of particles from an area of low concentration to an area of high concentration. a) True b) False 2) Diffusion is a passive process that does not require energy from the cell. a) True b) False 3) Oxygen and carbon dioxide diffuse across the cell membrane during gas exchange. a) True b) False 4) Diffusion only occurs in liquids and gases. a) True b) False 5) The rate of diffusion increases as the temperature decreases. a) True b) False 6) Diffusion continues until there is an equal concentration of particles on both sides of a membrane. a) True b) False 7) Diffusion can occur in solids, liquids, and gases a) True b) False 8) Large molecules like starch easily diffuse through the cell membrane. a) True b) False 9) The larger the surface area, the faster the rate of diffusion. a) True b) False 10) Diffusion is slower in gases than in liquids. a) True b) False

Diffusion ex 2 ( level 1)

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