Gastric juice of infants contains

Options

A. amylase, rennin, pepsinogen
B. maltase, pepsinogen, rennin
C. nuclease, pepsinogen, lipase
D. pepsinogen, lipase, rennin

Answer

To answer the question regarding what gastric juice of infants contains, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding Gastric Juice**: Gastric juice is a digestive fluid produced in the stomach, containing various enzymes and substances that aid in digestion.

2. **Analyzing Each Option**:
- **Option 1: Amylase, Renin, and Pepsinogen**
- Amylase is primarily found in saliva and is not present in gastric juice.
- Renin and pepsinogen are indeed present in gastric juice.
- **Conclusion**: This option is incorrect because it includes amylase.

- **Option 2: Maltase, Pepsinogen, and Renin**
- Maltase is an enzyme that breaks down maltose into glucose and is not found in gastric juice.
- Pepsinogen and renin are present.
- **Conclusion**: This option is incorrect because it includes maltase.

- **Option 3: Nuclease, Pepsinogen, and Lipase**
- Nuclease is an enzyme that digests nucleic acids and is not present in gastric juice.
- Pepsinogen and lipase are present.
- **Conclusion**: This option is incorrect because it includes nuclease.

- **Option 4: Pepsinogen, Lipase, and Renin**
- Pepsinogen is a precursor to pepsin, an enzyme that digests proteins.
- Lipase (gastric lipase) is involved in the digestion of fats.
- Renin is important for the digestion of milk in infants.
- **Conclusion**: This option is correct as it includes all three components that are present in gastric juice of infants.

3. **Final Answer**: The gastric juice of infants contains **Pepsinogen, Lipase, and Renin**. Therefore, the correct option is the fourth one.