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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