Question

all of the following are substances found within saliva, except. multiple choice hydrochloric acid bicarbonate ion amylase mucin lysozymes

Explanation:

Saliva contains bicarbonate ion (for pH balance), amylase (to break down starch), mucin (for lubrication), and lysozymes (antibacterial). Hydrochloric acid is in gastric juice (stomach), not saliva.

Answer:

hydrochloric acid