Tag: bio-chemistry

Questions Related to bio-chemistry

A flap-like muscular valve controls the movement of air and food is ..........

bio-chemistry digestion digestive system - organs process of digestion coordination in the process of digestion

  1. Nostrils

  2. Uvula

  3. Epiglottis

  4. None of the above

Show answer
Correct Option: C
Explanation:
The epiglottis is a leaf-shaped flap-like muscular valve made up of cartilage. It is located behind the tongue. The function of epiglottis is to prevent the entry of food in the windpipe and it seal off windpipe during eating.
So, the correct answer is 'Epiglottis'.

Why can a person not swallow food and talk at the same time?

bio-chemistry digestion digestive system - organs process of digestion coordination in the process of digestion

  1. The brain cannot control two activities at the same time.

  2. In order to speak, air must come through the pharynx to form sounds.

  3. In order to swallow, the epiglottis must close off the larynx (trachea).

  4. Both B and C are correct.

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Correct Option: D

The enzyme that is not present in succus entericus is

bio-chemistry digestion digestive glands liver pancreas

  1. Maltase

  2. Nucleases

  3. Nucleosidase

  4. Lipase

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Correct Option: B
Explanation:
  • Succus entericus contain enzymes like disaccharidases (maltase, lactase, sucrase, invertase), dipeptidases, lipases, nucleosidases. Nucleases is found in the pancreatic juice.
  • So the correct option is 'B'

Succus entericus is the name given to

bio-chemistry digestion digestive glands liver pancreas

  1. A junction between ileum and large intestine

  2. Intestinal juice

  3. Swelling in the gut

  4. Appendix

Show answer
Correct Option: B
Explanation:
Secretions of the brush border cells of mucosa along with the secretion of goblet cells constitute the intestinal juice which is also known as Succus entericus.

Which of the following juice passes through the ampulla of vater?
A. Succus entericus
B. Pancreatic juice
C. Bile
D. Secretion of Brunner's gland

bio-chemistry digestion digestive glands liver pancreas

  1. B and C

  2. A, B and C

  3. B, C and D

  4. A, B, C and D

Show answer
Correct Option: A
Explanation:
Ampulla of Vater is also called as hepato pancreatic duct. It is formed by the union of the pancreatic duct and the common bile duct. Hence pancreatic juice and bile passes through it.
So, the correct answer is 'B and C'.

If mucus is not released as a part of secretion of Brunner gland, the pH of the

bio-chemistry digestion digestive glands liver pancreas

  1. Small intestine will decrease

  2. Stomach will remain same

  3. Larger intestine will decrease

  4. Small intestine will remain same

Show answer
Correct Option: A
Explanation:

Mucus released as a part of secretion of Brunner gland and bicarbonates from pancreas protects the intestinal mucosa from acid as well as provide an alkaline medium. if mucus is not released then the pH of the small intestine will decrease means acid nature in the small intestine will increases.

So the correct answer is 'Small intestine will decrease'.

Succus entericus is secreted by

bio-chemistry digestion digestive glands liver pancreas

  1. A) secretions of crypts of Lieberkuhm

  2. B) Brunner's gland

  3. C) both of these

  4. D) none of these

Show answer
Correct Option: A
Explanation:

Succus entericus which is also known as the intestinal juice is secreted by Crypts of Lieberkuhn which moderates the pH of acidic chyme come from the stomach and also contains various digestive enzymes that take part in the final digestion of carbohydrate, fat and protein,

So the correct option is ' secretions of crypts of Lieberkuhm'

Brunner's glands are present in 

bio-chemistry digestion digestive glands liver pancreas

  1. Stomach

  2. Oesophagus

  3. ileum

  4. duodenum

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Correct Option: A

Brunner's gland is located in

bio-chemistry digestion digestive glands liver pancreas

  1. Duodenum

  2. Jejunum

  3. Ileum

  4. Stomach

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Correct Option: A

Which cells of 'Crypts of Lieberkuhn' secrete antibacterial lysozyme?

bio-chemistry digestion digestive glands liver pancreas

  1. paneth cells

  2. Zymogen cells

  3. Kupffer cells

  4. Argentaffin cells

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Correct Option: A