In human physiology, which digestive enzyme is secreted in active form in saliva and begins the chemical digestion of dietary starch into maltose?
Answer and explanation
Correct answer: C. Salivary amylase (ptyalin)
- Step 1: Salivary amylase breaks glycosidic bonds in starch, initiating carbohydrate digestion in the oral cavity. Answer: Salivary amylase (ptyalin). Why not the others: Pepsin digests proteins in the acidic stomach; lipase digests triglycerides.
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