Question

Which of the following is not the role of acid secreted in stomach-
a. activating pepsinogen into pepsin
b. dissolving minerals
c. Contraction of stomach wall
d. kill bacteria

Answer 1

Correct option:

c. Contraction of the stomach wall.

Contraction of the stomach wall occurs due to paristalsis in which muscle contraction takes place that moves through the digestive tract.

Answer 2

c. Contraction of stomach wall is not the role of acid secreted in stomach.

• pH of stomach remains very low due to presence of acid. Hydrochloric acid is secreted by parietal cells.
• It serves various important function like helping in digestion of food.
• It also activates the enzyme which are important for breakdown of macronutrients.
• Due to low pH, microbes are also killed preventing humans from infection.