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Question Video: Recalling Which Enzyme Pepsinogen Is Converted Into Biology

Pepsinogen is secreted by the cells that line the stomach. What is pepsinogen converted into?

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Video Transcript

Pepsinogen is secreted by the cells that line the stomach. What is pepsinogen converted into?

Pepsinogen is a precursor to a very important digestive enzyme found in the stomach. Stomach acid consists of hydrochloric acid mixed with pepsinogen. Hydrochloric acid keeps the pH of the stomach between 1.5 and 2.5. Pepsinogen is a precursor molecule that is converted into the enzyme pepsin in the highly acidic environment of the stomach. Pepsin breaks down proteins in food into smaller polypeptides that can further be broken down into single amino acids in the intestine.

In response to the question “What is pepsinogen converted into?,” the correct answer is pepsin.

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