Which is an enzyme activator secreted by the intestinal glands:
Correct answer: C. Enterokinase
- A. Amylase
- B. Pepsinogens
- C. Enterokinase
- D. Lipase
Explanation
Enterokinase from the duodenal lining converts trypsinogen into active trypsin, which then activates the other pancreatic proenzymes in turn. Pepsinogen is itself an inactive precursor rather than an activator, and it is activated by hydrochloric acid in the stomach, which makes it the tempting answer. Amylase and lipase are ordinary digestive enzymes.
This question appeared on the UHS MDCAT 2025 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Human Digestive System
The human digestive system breaks food into absorbable molecules through mechanical processing, enzyme action and chemical conditions along the alimentary canal. Questions cover the mouth, stomach, small and large intestines, liver, pancreas and associated secretions, including the digestion and absorption of carbohydrates, proteins, lipids, vitamins, minerals and water.
Practise Digestion
680 free Digestion MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.