B4 Quiz

Based on the grade booster checklist in my revision guide

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1. What two things do all enzymes have?

  • Optimum pH and concentration
  • Optimum temperature and pH
  • Optimum concentration and temperature
  • Optimum pH and volume
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2. How is water moved into plant roots?

  • Osmosis
  • Absorption
  • Photosynthesis
  • Through the chlorophyll

3. What is the mechanism for an enzyme substrate complex called?

  • Reaction mechanism
  • Lock and key mechanism
  • Catalyst mechanism
  • Enzyme-substrate mechanism

4. How do oxygen and carbon dioxide move around cells?

  • They move in and out by diffusion
  • They move in by diffusion but they can't get back out
  • They can only leave by diffusion
  • They can't move because the membrane blocks them

5. What does an enzyme work with?

  • A variety of substrates
  • Only one type of substrate
  • Any reaction
  • All substrates


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