Biology 0610 · IGCSE · Chemical digestion

Chemical digestion — practice question

What roles does the hydrochloric acid in gastric juice play?

  • Agiving the optimum pH for gastric enzymes ✓; killing bacteria ✓
  • Bgiving the optimum pH for gastric enzymes ✓; killing bacteria ✗
  • Cgiving the optimum pH for gastric enzymes ✗; killing bacteria ✓
  • Dgiving the optimum pH for gastric enzymes ✗; killing bacteria ✗

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