Biology 0610 · IGCSE · Chemical digestion

Chemical digestion — practice question

What functions does the hydrochloric acid in gastric juice perform?

  • Agiving the optimum pH for gastric enzymes: yes; killing bacteria: yes
  • Bgiving the optimum pH for gastric enzymes: yes; killing bacteria: no
  • Cgiving the optimum pH for gastric enzymes: no; killing bacteria: yes
  • Dgiving the optimum pH for gastric enzymes: no; killing bacteria: no

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