The proteolytic enzyme rennin is found in :

Options

A. Intestinal juice
B. Bile juice
C. Gastric juice
D. Pancreatic juice

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the location of the proteolytic enzyme renin. Renin is an enzyme that plays a role in the digestion of proteins.

2. **Identifying Renin's Function**: Renin is specifically involved in the digestion of milk proteins, which is particularly important for infants who consume milk as their primary source of nutrition.

3. **Locating Renin in the Body**: Renin is produced in the stomach of infants. It is secreted in the gastric juice, which is the digestive fluid produced in the stomach.

4. **Evaluating the Options**:
- **Option A: Intestinal Juice** - This contains enzymes like enterokinase, sucrase, and maltase, but not renin. Therefore, this option is incorrect.
- **Option B: Bile Juice** - Bile does not contain any digestive enzymes; it primarily consists of bile salts and pigments. Thus, this option is also incorrect.
- **Option C: Gastric Juice** - This is where renin is found, particularly in infants. This option is correct.
- **Option D: Pancreatic Juice** - This contains enzymes such as trypsinogen and lipases, but not renin. Therefore, this option is incorrect.

5. **Conclusion**: Based on the evaluation of the options, the correct answer is that the proteolytic enzyme renin is found in **gastric juice**.

**Final Answer**: The proteolytic enzyme renin is found in **gastric juice**.

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