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The acid secreted in the stomach is:
(a) Hydrochloric acid
(b) Sulphuric acid
(c) Phosphoric acid
(d) Nitric acid
Correct Answer: (a) Hydrochloric acid
Explanation:
Hydrochloric acid plays a major role in the process of digestion. It makes the medium of gastric juice acidic so that the enzyme pepsin can digest the proteins properly and also kills any bacteria that might have entered the stomach with food.
There is a gastric gland in the stomach wall that produces gastric juice which consist of hydrochloric acid, pepsin, and mucus.
Bacteria that may enter the stomach through food are killed by the hydrochloric acid found in foods. To activate dormant pepsinogen, it helps to create an acidic environment.
Pepsin is a digestive enzyme that breaks down proteins in meals to smaller molecules.
Protein digestion into amino acids is aided by pepsin.
Mucus helps protect the stomach's inner layer from hydrochloric acid discharges. Hydrochloric acid can corrode stomach walls if they are not adequately protected.
If the gastric glands do not produce mucus, the gas will irritate the lining of the stomach and cause ulcers.
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