Tusomesasa.

Explain the functions of hydrochloric acid in the stomach.(10 marks)

Suggested resposponses

a. Protein Digestion; hydrochloric acid helps activate pepsinogen, a precursor enzyme, into pepsin, which is an active enzyme that breaks down proteins into smaller peptides. Pepsin works optimally in the highly acidic environment provided by Hydrochloric acid;

b. Pathogen Defense; The acidity of hydrochloric acid creates a hostile environment for most...