Flashcards
Biology 3.1.1 Features of exchange surfaces
Cards in this deck (6)
- 1Define diffusionThe net movement of particles from a reigon of higher concentration to an area of lower concentration
- 2Fill in the gap: As an organsism gets bigger, its ______/_______ volume also increasesSurface area/ volume
- 3What four features of an exchange surface effect the rate of diffusion?Surface area
Thickness
Concentration gradient
Moistness - 4Explain how concentration gradient effects the rate of diffusionThe greater the concentration gradient, the quicker diffusion will take place
- 5Explain how the thickness of a surface may effect the rate of diffusionThe thinner the surface, the shorter the diffusion pathway so the faster the diffuion is
- 6Explain why cells must be kept moistWater will always diffuse out of the cell on the cell surface but if too much
water is lost, then the plasma membrane will break down and the cell will die
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- User has deleted their subject information Flashcards on Biology 3.1.1 Features of exchange surfaces, created by Deleted user on 07/06/2019.
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- Created by Sam Gunnell · Feb 13, 2019
- Copied by Sam Gunnell · Jun 7, 2019
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