Question

Which component of gastric juice inactivates ptyalin?
A. HCI
B. Pepsin
C. Mucus
D. Renin

Answer 1

Hint: Gastric juice may be a variable mixture of water, acid, electrolytes (sodium, potassium, calcium, phosphate, sulphate, and bicarbonate), and organic substances (mucus, pepsins, and protein).

Complete answer:
The secretion glands create spit and empty it into your mouth through openings referred to as ducts. spit helps with swallowing and chewing. It may facilitate preventing infections from developing in your mouth or throat. There are two styles of salivary glands: the main secretion glands. The three pairs of major secretion glands below and behind your jaw — salivary gland, sublingual and submandibular. several different small secretion glands are in your lips, within your cheeks, and throughout your mouth and throat.
Saliva contains an associate accelerator referred to as salivary enzyme (ptyalin). a salivary enzyme is inactivated within the abdomen by gastric acid (HCl). In digestive juice pH three. The three amylase gets inactivated in twenty minutes once getting in the abdomen, as its optimum pH is basic. Hydrochloric acid is an important acid within the abdomen. It helps destroy bacteria, moreover as different harmful species. It additionally works as a preservative of food. HCl converts pepsinogen that isn't active into pepsin to metabolize proteins in our abdomen.
So, the right answer is choice A.

Note: Chief operation of HCl is (1) to keep up low pH to market growth of microorganisms (2) To facilitate absorption (3) To keep up low pH to activate enzyme to make enzyme (4) To dissolve enzymes secreted in the abdomen. Hydrochloric acid is an important acid within the abdomen.