Biology 9700 · AS & A Level · Mode of action of enzymes

Mode of action of enzymes — practice question

Lysozyme is found in human tears, saliva, milk and mucus. It functions in the immune system and hydrolyses peptidoglycan. Which description of lysozyme is correct?

  • AIt is an extracellular antibody.
  • BIt is an intracellular antibody.
  • CIt is an extracellular antibacterial protein.
  • DIt is an intracellular antibacterial protein.

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