The stomach's acidic environment kills bacteria and allows protein digestion to begin. Choose the correct statement about the stomach. The high pH of the stomach allows digestive enzymes to work effectively. Hydrochloric acid converts the inactive digestive enzyme lingual lipase into the active enzyme gastric lipase. The low pH of the stomach denatures proteins, a preliminary step in protein digestion. Bicarbonate present in gastric juice kills bacteria that may be present on the food.
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Hydrochloric acid converts the inactive digestive enzyme lingual lipase into the active enzyme gastric lipase - This statement is incorrect because hydrochloric acid activates pepsinogen into pepsin, not lingual lipase into gastric lipase. Show more…
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Select the correct statement about digestive processes. Pepsin is a enzyme produced by the stomach for the purpose of starch digestion. All commonly ingested substances are significantly absorbed by the mucosa of the stomach. Chyme entering the duodenum has its pH buffered by pancreatic enzymes. The ascending salivary gland is active in the large intestine.
Food being digested in the stomach is in a highly acidic environment. The pH of the small intestine is higher than that of the stomach. Which statement best explains why this occurs? Secretin increases the flow of bicarbonate ions from the pancreas into the small intestine to neutralize the stomach acid. When pepsinogen activates pepsin, one result is the neutralization of stomach acid in the stomach. Trypsinogen is activated, thus neutralizing the stomach acid. Bile salts from the gallbladder neutralize the stomach acid.
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