Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Digestion and Absorption

Multiple Choice Questions

11.

Which one of the following correctly represents the normal adult human dental formula?

3/3, 1/1, 3/2,/1/1
2/2,1/1,3/2,3/3
2/2, 1/1, 2/2, 3/3
2/2, 1/1, 2/2, 3/3

352 Views

12.

Which one of the following pairs of food components in humans reaches the stomach totally undigested?

Protein and starch
Starch and fat
Fat and cellulose
Fat and cellulose

665 Views

13.

Which one of the following statement is true regarding digestion and absorption of food in humans?

Oxyntic cells in our stomach secrete the proenzyme pepsinogen.
Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na⁺
Chylomicrons are small Lipoprotein particles that are transported from the intestine into blood capillaries.
Chylomicrons are small Lipoprotein particles that are transported from the intestine into blood capillaries.

613 Views

14.
What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor?

Gastric juice will be deficient in chymosin

Gastric juice will be deficient in pepsinogen

In the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin

In the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin

In the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin

Gastric glands are numerous microscopic tubular glands formed by the epithelium of the stomach.The parietal cells (oxynitic cells) are large and most numberous on the side walls of gastric glands. They secrete hydrochloric acid and castle intrinsic factor. The peptic cells (zymogen) cells of gastric glands secrete gastric digestive enzymes as proenzymes - pepsinogen and proennin and a small amount of gastric amylase and gastric lipase. The hydrochloric acid maintains a strongly acidic pH of about 1.5 to 2.5 in the stomach. HCl converts pepsinogen and prorennin to pepsin and rennin respectively.

The secretion of intestinal glands is called succus entericus. It contains many enzymes, maltase, lactase, sucrase, enterokinase, nucleotidase etc. The enterokinase coverts proenzyme trypsinogen into active trypsin.

524 Views