Why is the small intestine referred to as 'small'?

B. It is shorter in length than the large intestine

C. It has a smaller surface area

Which of the following is not a major activity of the stomach?

D. Partial digestion of proteins

Everyday Science · Body Systems (Human Biology) · page 13 of 19

Digestive System MCQs with Answers

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Digestive System MCQs (121–130)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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121.
Where is fat primarily digested in the human body?
Correct Answer: B. Small intestine
One-liner
Fat is primarily digested in the small intestine with the help of bile and pancreatic lipase.
122.
The digested food is mainly absorbed into the blood through capillaries in _?
Correct Answer: B. Small intestine
One-liner
The digested food is mainly absorbed into the blood through capillaries present in the small intestine.
123.
Why is the small intestine referred to as 'small'?
Correct Answer: D. It is narrow in diameter
One-liner
The small intestine is called 'small' because it is narrow in diameter (about 2.5–3 cm), not because of its length.
124.
The breakdown of large food particles into small particles is called?
Correct Answer: B. Digestion
One-liner
The breakdown of large food particles into smaller particles is called Digestion.
125.
Which of the following is not a major activity of the stomach?
Correct Answer: C. Nutrient absorption
One-liner
The stomach does not perform nutrient absorption; that function primarily occurs in the small intestine.
126.
The optimum pH for pepsin is?
Correct Answer: C. 2.00
One-liner
The optimum pH for pepsin is 2.00, which corresponds to the highly acidic environment of the stomach.
127.
Which of the following acts as an enzyme activator in human digestive system?
Correct Answer: C. Enterokinase
One-liner
<strong>Enterokinase</strong> acts as an enzyme activator in the human digestive system by converting inactive trypsinogen into active trypsin.
128.
Which organ is responsible for storing bile in the human body?
Correct Answer: B. Gall bladder
One-liner
The gall bladder is the organ responsible for storing bile in the human body.
129.
Past Paper MCQ
Which enzyme is responsible for digesting starch in the human body?
Correct Answer: C. Amylase
One-liner
The enzyme responsible for digesting starch in the human body is amylase.
130.
Which part of small intestine is responsible for nutrient absorption?
Correct Answer: B. Jejunum
One-liner
The jejunum is the middle part of the small intestine and is primarily responsible for nutrient absorption.

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Digestive System MCQs with Answers

Digestive System MCQs (121–130)

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