MCQ on Digestion and Absorption

MCQ on Digestion and Absorption

Frequently Asked MCQ quiz on the Digestion and Absorption Questions with Answers – MCQ Quiz for Competitive Exam Preparation – These questions given will be useful for competitive exams preparation. We will be updating more mcq regularly, please follow our website regularly.

What is the primary function of digestion?

a) Absorption of nutrients

b) Breakdown of food into smaller molecules

c) Regulation of body temperature

d) Synthesis of proteins

Answer: b) Breakdown of food into smaller molecules

Which organ is primarily responsible for the mechanical digestion of food?

a) Stomach

b) Small intestine

c) Mouth

d) Esophagus

Answer: c) Mouth

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Which enzyme is responsible for the breakdown of carbohydrates in the mouth?

a) Pepsin

b) Lipase

c) Amylase

d) Trypsin

Answer: c) Amylase

Where does the majority of nutrient absorption occur in the digestive system?

a) Stomach

b) Small intestine

c) Large intestine

d) Esophagus

Answer: b) Small intestine

What is the primary function of villi and microvilli in the small intestine?

a) Mechanical digestion

b) Absorption of nutrients

c) Secretion of enzymes

d) Protection of the intestinal lining

Answer: b) Absorption of nutrients

Which enzyme is responsible for the breakdown of proteins in the stomach?

a) Pepsin

b) Amylase

c) Lipase

d) Trypsin

Answer: a) Pepsin

Which substance emulsifies fats in the small intestine to aid in their digestion?

a) Bile salts

b) Gastric juice

c) Pancreatic enzymes

d) Hydrochloric acid

Answer: a) Bile salts

Which nutrient is primarily absorbed in the stomach?

a) Carbohydrates

b) Proteins

c) Lipids

d) Water

Answer: d) Water

What is the primary function of bile in digestion?

a) Emulsification of fats

b) Activation of enzymes

c) Neutralization of stomach acid

d) Absorption of water

Answer: a) Emulsification of fats

Which enzyme is responsible for the breakdown of fats in the small intestine?

a) Pepsin

b) Amylase

c) Lipase

d) Trypsin

Answer: c) Lipase

Which organ produces bile?

a) Liver

b) Stomach

c) Pancreas

d) Gallbladder

Answer: a) Liver

What is the primary function of hydrochloric acid in the stomach?

a) Activation of enzymes

b) Emulsification of fats

c) Neutralization of stomach acid

d) Denaturation of proteins

Answer: d) Denaturation of proteins

Which nutrient is primarily absorbed in the large intestine? a) Carbohydrates b) Proteins c) Lipids d) Water Answer: d) Water

Which enzyme is responsible for the breakdown of starch into maltose in the small intestine?

a) Pepsin

b) Amylase

c) Lipase

d) Trypsin

Answer: b) Amylase

What is the primary function of the pancreas in digestion?

a) Production of bile

b) Production of hydrochloric acid

c) Secretion of digestive enzymes

d) Absorption of nutrients

Answer: c) Secretion of digestive enzymes

Which of the following is not an accessory organ of digestion?

a) Liver

b) Pancreas

c) Gallbladder

d) Small intestine

Answer: d) Small intestine

Which enzyme is responsible for the breakdown of proteins in the small intestine?

a) Pepsin

b) Amylase

c) Lipase

d) Trypsin

Answer: d) Trypsin

Where does the digestion of carbohydrates primarily occur?

a) Stomach

b) Small intestine

c) Large intestine

d) Mouth and small intestine

Answer: d) Mouth and small intestine

What is the function of bile salts in digestion?

a) Activation of enzymes

b) Emulsification of fats

c) Neutralization of stomach acid

d) Absorption of water

Answer: b) Emulsification of fats

Which nutrient is primarily absorbed in the stomach?

a) Carbohydrates

b) Proteins

c) Lipids

d) Water

Answer: d) Water

Which substance is produced by the stomach to aid in the digestion of proteins?

a) Bile

b) Hydrochloric acid

c) Pancreatic enzymes

d) Bicarbonate ions

Answer: b) Hydrochloric acid

Which enzyme is responsible for the breakdown of disaccharides into monosaccharides in the small intestine?

a) Pepsin

b) Amylase

c) Maltase

d) Trypsin

Answer: c) Maltase

What is the primary function of pancreatic enzymes in digestion?

a) Emulsification of fats

b) Neutralization of stomach acid

c) Activation of bile

d) Breakdown of carbohydrates, proteins, and fats

Answer: d) Breakdown of carbohydrates, proteins, and fats

Which structure increases the surface area for absorption in the small intestine?

a) Villi and microvilli

b) Rugae

c) Crypts of Lieberkühn

d) Plicae circulares

Answer: a) Villi and microvilli

Which enzyme is responsible for the breakdown of nucleic acids in the small intestine?

a) Pepsin

b) Amylase

c) Lipase

d) Nuclease

Answer: d) Nuclease

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