Factors Affecting the Rate of Diffusion Flashcards

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How does temperature affect the rate of diffusion?

Increasing the temperature increases the rate of diffusion because particles have more kinetic energy and move faster.

What is the effect of concentration gradient on the rate of diffusion?

Increasing the concentration gradient increases the rate of diffusion, as particles move from higher to lower concentration areas more rapidly.

How does surface area influence the rate of diffusion?

Increasing a membrane’s surface area increases the rate of diffusion because there is a greater area for substances to diffuse across.

Why do single-celled organisms have high surface area to volume ratios?

Single-celled organisms have high surface area to volume ratios to efficiently use diffusion for transporting substances in and out of their cell.

How do multicellular organisms solve the problem of insufficient surface area for their volume?

They have unique gas exchange structures with large surface areas and transport systems to carry substances around the body.

What happens to the surface area to volume ratio as the size of an organism increases?

As the size of an organism increases, the surface area to volume ratio decreases.

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