Biology Chapter 3 - Exchange of materials

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1. What effect does temperature have on diffusion and osmosis?

  • The rate of reaction doesn't change
  • It increases the rate of reaction
  • It decreases the rate of reaction
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2. What is one adaptation for exchange in animals?

  • Thick cell membrane
  • Lots of blood vessels
  • Small surface area

3. If the solution outside the cell is more concentrated than the cell contents, the cell will...

  • shrivel up
  • swell and burst
  • stay the same

4. Active transport allows cells to move...

  • against a concentration gradient
  • across a concentration gradient

5. As living organisms get bigger and more complex, their surface area : volume ratio

  • decreases
  • increases
  • stays the same

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