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NEET MDS Quiz - Practice Test

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physiology - 3 Questions

1
Physiology
What is the primary function of bile acids in the intestine?
1) Emulsification of dietary fat
2) Neutralization of intestinal pH
3) Digestion of proteins
4) Absorption of water and electrolytes

📝 Explanation:

Bile acids, through the formation of micelles, aid in the emulsification of fat, facilitating its digestion and absorption.

2
Physiology

What is the role of ghrelin in the control of food intake?
1) It stimulates the release of growth hormone
2) It suppresses the secretion of gastric acid
3) It inhibits food intake
4) It increases the sensation of hunger

📝 Explanation:

Ghrelin increases the sensation of hunger, stimulating appetite and food intake, particularly before meals.

3
Physiology

What is the primary role of pancreatic amylase in the digestive process?
1) Breaking down fats into fatty acids and glycerol
2) Degrading proteins into peptides and amino acids
3) Hydrolyzing polysaccharides into maltose and isomaltose
4) Neutralizing gastric acid in the duodenum
E) Converting bile salts into bile acids

📝 Explanation:

Pancreatic amylase is an enzyme that plays a key role in the digestion of carbohydrates. It is secreted into the duodenum in response to food and breaks down complex starches into simpler disaccharides like maltose and isomaltose. These disaccharides are then further hydrolyzed by other enzymes into glucose for absorption.

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