Question

The gastric juice of infants contains

• A. Amylase, rennin, pepsinogen
• B. Maltase, pepsinogen, rennin
• C. Nuclease, pepsinogen, lipase
• D. Pepsinogen, lipase, rennin

Answer 1

The correct option is D

Pepsinogen, lipase, rennin

The correct option is D.

Explanation for correct option:

1. The glands in the stomach lining secrete gastric juice, which is highly acidic in nature.
2. Hydrochloric acid, sodium chloride, and potassium chloride make up gastric juice.
3. It activates digestive enzymes, which aid in the digestion of proteins.
4. Pepsinogen, lipase, and rennin are present in gastric juice.

Explanation for incorrect options:

Option A:

1. Gastric juice contains pepsinogen, lipase, and rennin.
2. Because newborns exclusively are on milk, the enzymes found in their stomach juice differ from those found in children or adults.
3. Amylase is a digestive enzyme that breaks down starch into smaller carbohydrate molecules in meals.

Option B:

1. The most essential function of maltase is as an enzyme in the human digestive tract.
2. When starch is converted to maltose by pancreatic or salivary enzymes like amylase.

Option C:

1. Nuclease enzymes aid in the digestion of Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA) found in our food.

Final answer: The gastric juice of infants contains pepsinogen, lipase, and rennin.