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

  • decreases
  • increases
  • stays the same

3. Energy for active transport comes from...

  • cellular respiration
  • the muscles
  • the heart

4. Osmosis is the movement of water molecules across a partially permeable membrane from...

  • an area of high concentration to an area of high concentration
  • an area of high concentration to an area of low concentration
  • an area of low concentration to an area of high concentration

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

  • shrivel up
  • swell and burst
  • stay the same

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