Free Digestion And Absorption (Daily Quiz: 10) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Digestion And Absorption (Daily Quiz: 10) Time:

Question-1

To which of the following families do folic acid and pantothenic acid belong?

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Vitamin B complex is a group of water soluble vitamins that characteristically serve as components of coenzymes. Plant and many micro- organisms can manufacture B-vitamins but dietary sources are essential for most animals. Heat and light tend to destroy B vitamins. The vitamin B complex consists of 8 different components - $B_1 , B_2 , B_3$ , pantothenic acid, $B_6$ , folic acid, biotin and $B_12$ . Pantothenic acid functions as a part of coenzyme A in cell respiration while folic acid functions as part of coenzymes in protein and nucleic acid metabolism.


Question-2

If for some reason our goblet cells becomes nonfunctional then this will adversely affect

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Goblet cells, found in the intestinal mucosal epithelium, secretes mucus. The mucus lubricates the food for its easy passage. So, if for some reason, goblet cells become non-functional, it will adversely affect the smooth movement of food down the intestine.


Question-3

Enterokinase takes part in conversion of

(a)

(b)

(c)

(d)

Explanation:

Answer: (a)

The enzyme Enterokinin (enteropeptidase) secreted by the intestinal mucosa activates trypsinogen into trypsin.


Question-4

Which of the following are parasites of intestine?

(a)

(b)

(c)

(d)


Question-5

Select the correct match of the digested products in humans with their absorption site and mechanism.
 Column-IColumn-II
(a)Fructose, $Na^{+}$– Small intestine, passive absorption
(b)Glycerol, fatty acids– Duodenum, move as chylomicrons
(c)Cholesterol, maltose– Large intestine, active absorption
(d) Glycine, glucose– Small intestine, active absorption

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Small intestine is the major area of absorption of nutrients. Approximately 80% of absorption take place here. Glucose, fructose, fatty acids, amino acids (glycine etc.) are absorbed through mucosa into blood and lymph by active absorption.


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