B4 Quiz

Based on the grade booster checklist in my revision guide

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1. What happens to enzyme activity as the temperature increases?

  • It stays the same
  • It increases
  • It increases up to a point
  • It decreases
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2. What does aerobic respiration require?

  • Carbon dioxide
  • Nitrogen
  • Oxygen
  • Lactic acid

3. What is diffusion?

  • The movement of molecules from an area of low to high concentration
  • The movement of molecules from an area of high to low concentration
  • The random movement of molecules
  • The movement of water across a cell membrane

4. What does the cell membrane do?

  • Regulates what enters and leaves cells
  • Regulates the cell temperature
  • Regulates the pH in the cell
  • Regulates the oxygen intake

5. What are enzymes assembled from?

  • Instructions in the genes
  • Instructions based on previous reactions
  • Instructions based on the body's needs at the time
  • Instructions from receptors

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