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 temperature and pH
  • Optimum pH and volume
  • Optimum concentration and temperature
  • Optimum pH and concentration
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2. What does the cell membrane do?

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

3. What are enzymes?

  • Proteins that speed up the development of proteins
  • Proteins that speed up chemical reactions
  • Chemicals that speed up the development of proteins
  • Chemicals that are used as catalysts

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

  • It stays the same
  • It increases
  • It increases up to a point
  • It decreases

5. What does aerobic respiration require?

  • Nitrogen
  • Oxygen
  • Carbon dioxide
  • Lactic acid
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