Which of the following enzyme is produced in the kidneys ?

Options

A. Rennin
B. Renin
C. Uricase
D. Arginase

Answer

To answer the question "Which of the following enzyme is produced in the kidneys?", we will analyze the options provided and identify the correct enzyme.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are:
- Renin
- Uricase
- Arginase

2. **Understand the Function of Each Enzyme**:
- **Renin**: This is a proteolytic enzyme involved in the regulation of blood pressure. It plays a crucial role in the renin-angiotensin-aldosterone system (RAAS), which helps control blood pressure and fluid balance.
- **Uricase**: This enzyme is involved in the breakdown of uric acid into allantoin. It is primarily synthesized in the liver, not the kidneys.
- **Arginase**: This enzyme is involved in the urea cycle, converting arginine into urea and ornithine. Like uricase, it is also produced in the liver.

3. **Locate the Source of Each Enzyme**:
- **Renin**: Produced by the juxtaglomerular cells of the kidneys, specifically in the walls of the afferent arterioles.
- **Uricase and Arginase**: Both are synthesized in the liver and not in the kidneys.

4. **Conclusion**: Based on the information gathered, the enzyme that is produced in the kidneys is **Renin**.

### Final Answer:
The enzyme produced in the kidneys is **Renin**.

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