The conversion of `NH_(3)` into urea occurs in
or Transamination process takes place in

Options

A. Lungs
B. Large intestine
C. Liver
D. Cloaca

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks where the conversion of ammonia (NH₃) into urea occurs, or where the transamination process takes place.

2. **Identifying the Key Processes**:
- The conversion of ammonia to urea is part of the urea cycle, which is essential for detoxifying ammonia, a byproduct of protein metabolism.
- Transamination is the process where amino groups are transferred from one amino acid to a keto acid, forming a new amino acid and a new keto acid.

3. **Locating the Organ Involved**:
- The liver is the primary organ responsible for the urea cycle. It converts ammonia into urea, which is less toxic and can be excreted from the body.
- Transamination also primarily occurs in the liver, where amino acids are synthesized and degraded.

4. **Conclusion**: Based on the above understanding, the conversion of ammonia into urea occurs in the liver. Therefore, the answer to the question is the liver.