Which of the following enzymes formed in the pancreas aids in protein digestion?
- A. Amylase
- B. Lipase
- C. Trypsinogen
- D. Trypsin
Correct Answer: D
Rationale: Trypsin, activated from trypsinogen, is a pancreatic enzyme that digests proteins.
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Which of the following absorbed in proximal intestine?
- A. Iron
- B. Sodium
- C. Bile salts
- D. Vitamin B12
Correct Answer: A
Rationale: Iron is absorbed in the proximal small intestine (duodenum and jejunum).
Secretin and cholecystokinin are secreted in
- A. Pyloric region
- B. Ileum
- C. Duodenum
- D. Oesophagus
Correct Answer: C
Rationale: Secretin and cholecystokinin are secreted in the duodenum to regulate pancreatic and gallbladder activity.
Which of these is not a carbohydrate?
- A. sugar
- B. starch
- C. fat
- D. cellulose
Correct Answer: C
Rationale: Fat is a lipid, not a carbohydrate, unlike sugar, starch, and cellulose.
The crypts of Lieberkuhn secrete :
- A. Gastrin
- B. Rennin
- C. Cholecystokinin
- D. Succus entericus
Correct Answer: D
Rationale: Crypts of Lieberkuhn secrete succus entericus (intestinal juice) for digestion in the small intestine.
Zymogen cells of fundic glands show the following EXCEPT:
- A. Secrete gastric lipase
- B. Secrete rennin enzyme
- C. Present in the gland neck
- D. Secrete pepsinogen
Correct Answer: C
Rationale: Zymogen (chief) cells are located in the body and base of fundic glands, not the neck, and secrete pepsinogen and gastric lipase.