A man has taken large amount of protein in his diet .He will excrete more of :

Options

A. Urea
B. Urice acid
C. Sugar
D. Salts and water

Answer

**Step-by-Step Solution:**

1. **Understanding Protein Metabolism:**
- When a person consumes a large amount of protein, the body needs to process these proteins. Proteins are made up of amino acids, which contain nitrogen in their structure.

2. **Deamination Process:**
- The first step in processing excess protein is deamination. This is the removal of the amino group (-NH2) from the amino acids. The result of deamination is the formation of ammonia (NH3), which is toxic to the body.

3. **Conversion to Urea:**
- The ammonia produced is converted into urea in the liver through the urea cycle. Urea is much less toxic than ammonia and is soluble in water, making it easier for the body to excrete.

4. **Excretion of Urea:**
- Once formed, urea is transported from the liver to the kidneys via the bloodstream. The kidneys filter the blood, and urea is excreted in urine.

5. **Comparison with Other Waste Products:**
- While uric acid is also a waste product of protein metabolism, it is produced in smaller amounts compared to urea. Other options like sugar and salt do not directly relate to protein metabolism and are not excreted in larger quantities due to high protein intake.

6. **Conclusion:**
- Therefore, when a man consumes a large amount of protein, he will excrete more urea than any other waste product.

**Final Answer:**
- The correct answer is **urea**.

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