AIIMS Digestion and Absorption Assertion and Reason

1. Assertion (A) : Liver is the largest gland of human body.
Reason (R) : Liver contains islets of Langerhans that are phagocytic in nature.
2. Assertion (A) : Carbohydrates are more suitable for the production of energy in the body than proteins and fats.
Reason (R): Carbohydrate molecules contain relatively less oxygen than the others, and hence require less molecular oxygen for oxidation.
3. Assertion (A): Vermiform appendix is a vestigial organ in human body.
Reason (R) : It does not participate in digestion.
4. Assertion (A): The digestive action of salivary amylase stops when the swallowed food enters the stomach. Reason (R): Salivary amylase is inactivated at the low pH of gastric juice.
5. Assertion (A) : Enterokinase converts trypsinogen of pancreatic juice into trypsin.
Reason (R): Trypsin acts best at an alkaline pH provided in small intestine.

6. Assertion (A) : Large intestine is the rear division of the vertebrate intestine that is divided into the caecum, colon and rectum.
Reason (R): It is called ‘large’ because it is longer than the small intestine.
7. Assertion (A) : Liver secretes bile that gets stored in the hepatic lobules.
Reason (R) : Bile contains enzyme lipase that acts on fats.
8. Assertion (A): Pepsin present in the gastric juice poses no threat to the stomach.
Reason (R) : Pepsin is secreted in an inactive form.
9. Assertion (A): Fatty acids and glycerol are not absorbed into the blood directly.
Reason (R) : Fatty acids and glycerol are insoluble in water.
10. Assertion (A) : Peyer’s patches are simple, tubular structures which occur throughout the small intestine between the villi.
Reason (R): Peyer’s patches secrete digestive enzymes and mucus.

Answers

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