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- Subject
- Physiology Mcqsmedical-mcqs › physiology-mcqs
- Published
- 13 Jul 2019
- Last updated
- 28 May 2026
Explanation
Pepsinogen, an inactive enzyme precursor, is converted into its active form, pepsin, by exposure to a low pH (acidic conditions) in the stomach. This acidic environment induces the structural change necessary for activation. Other enzymes like enterokinase, trypsin, and chymotrypsin do not activate pepsinogen.
More Physiology Mcqs
Practice related questions from the same subject.
- 1.Where is the intrinsic factor, essential for the absorption of vitamin B12, synthesized?
- 2.Peristalsis is characterized by the synchronized contraction and relaxation occurring where in relation to the food bolus?
- 3.Which of the following substances is not secreted by enteroendocrine cells?
- 4.What is the primary physiological effect of Secretin?
- 5.Which of the following enzymes is NOT activated by trypsin?
- 6.Which of the following bodily secretions is characterized by a significantly high pH level?
- 7.Which of the following reflexes is controlled by the vagus nerve?
- 8.Which organ is responsible for releasing secretin?