Lysozyme causes mutations in bacterial cell wall molecules. Lysozyme is destroyed as it digests bacterial cell wall molecules. Lysozyme breaks a specific type of bond in a bacterial cell wall molecule. Lysozyme is converted to another chemical by a bacterial cell wall molecule.
I gave my students this multiple choice question: Human tears contain the enzyme lysozyme, which damages the cell walls of bacteria. Which of the following statements about lysozyme is most accurate?

Only one answer is correct among these 4 choices:
- Lysozyme causes mutations in bacterial cell wall molecules.
- Lysozyme is destroyed as it digests bacterial cell wall molecules.
- Lysozyme breaks a specific type of bond in a bacterial cell wall molecule.
- Lysozyme is converted to another chemical by a bacterial cell wall molecule.

Could you tell me which one is correct?

Lysozyme breaks a specific type of bond in a bacterial cell wall molecule.