Hydrochloric acid has all the following digestive functions except a. activation of the enzyme pepsin. b. breakdown of connective tissue in meat. c. neutralization of stomach acid. d. destruction of some ingested microorganisms.

Answer: C. Neutralization of stomach acid.

Hydrochloric acid is one of the three components of the stomach acid. The other two are potassium chloride and sodium chloride.

It plays a key role in the destruction of some ingested microorganisms. It is also vital to the digestion of proteins by activating the enzyme pepsin.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.