Depositon of ……………….in the joints causes gout:

Options

A. Urea
B. Uric acid
C. Guanine
D. Ammonia

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the substance that, when deposited in the joints, causes gout.

2. **Analyzing the Options**:
- **Option 1: Urea** - Urea is a waste product formed from the breakdown of proteins. Its accumulation in the blood leads to uremia, which is related to kidney failure, not gout.
- **Option 2: Uric Acid** - Uric acid is a waste product formed from the breakdown of purines. When uric acid levels become too high, it can crystallize and deposit in the joints, leading to gout, which is characterized by inflammation and pain.
- **Option 3: Guanine** - Guanine is a nucleobase found in DNA and RNA. It is not related to gout.
- **Option 4: Ammonia** - Ammonia is a toxic byproduct of protein metabolism. Elevated levels can cause liver diseases but are not associated with gout.

3. **Identifying the Correct Answer**: After analyzing all options, it is clear that the correct answer is **Uric Acid**, as its deposition in the joints is the cause of gout.

4. **Conclusion**: The deposition of uric acid in the joints causes gout.

**Final Answer**: Uric Acid

---