The chemical found in tears and saliva that hydrolyzes the peptidoglycan in certain bacterial cell walls is

The correct answer is "lysozyme".

Explanation:

Lysozyme is a type of enzyme that catalyzes the hydrolysis of the cell walls found in certain types of bacteria. Lysozymes are found in tears, saliva and sweat as an adaptation of the body to fight against bacteria found in the environment. Other body fluids such as the mucosa found in nasal cavity also contain lysozymes.

This question lacks options, the options are:

A. lactic acid.

B. hydrochloric acid.

C. lysozyme.

D. histamine.

E. bile.

The correct answer is C. lysozyme.

Explanation:

Lysozyme is an enzyme of natural origin present in tears (protecting against bacteria and viruses) and saliva, where it acts as a barrier against infections, since it protects against a wide variety of microorganisms such as bacteria, viruses and different fungi species of Candida. Its antibacterial function occurs through direct bacteriolytic action by attaching to the bacterial cell wall or by stimulating the phagocytic function of macrophages. In the case of Gram positive bacteria, lysozyme causes their lysis by altering the properties of the structures of the cell surface destroying the glycosidic bond between N-acetylmuramic acid and N-acetylglucosamine in bacterial peptidoglycan, which is an important component of the cell wall.

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