NUTRITION
DIGESTIVE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Amylase (Pepsin)
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Pepsin
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Trypain
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Lipase
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Detailed explanation-1: -Hydrochloric acid (HCl), another component of the gastric juice, plays a crucial role in creating the pH required for pepsin activity. Parietal cells produce HCl by secreting hydrogen and chloride ions. When pepsinogen and hydrochloric acid exist together in the gastric juice, pepsin takes its active form.
Detailed explanation-2: -Pepsin, the first animal enzyme discovered (Florkin, 1957), is an acidic protease that catalyzes the breakdown of proteins into peptides in the stomach, while it does not digest the body’s own proteins.
Detailed explanation-3: -Pepsin is an aspartic protease that acts in food digestion in the mammal stomach. An optimal pH of around 2 allows pepsin to operate in its natural acidic environment, while at neutral pH the protein is denatured.
Detailed explanation-4: -Pepsin works in the highly acidic conditions of the stomach. It has an optimum pH of about 1.5.
Detailed explanation-5: -Pepsin is an aspartic protease, using a catalytic aspartate in its active site.