A healthy adult human excretes out (on the average) how many grams of urea per day?

Options

A. 25 - 30 g
B. 40 - 50 g
C. 10 - 15 g
D. None of the above

Answer

To determine how many grams of urea a healthy adult human excretes on average per day, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Urea Excretion**:
- Urea is a primary nitrogenous waste product excreted by humans. It is formed from the breakdown of proteins.

2. **Protein Metabolism**:
- When proteins are metabolized, they are broken down into amino acids. These amino acids can then be converted into ammonia, which is toxic in high concentrations.

3. **Conversion to Urea**:
- To safely excrete nitrogen, the body converts ammonia into urea through a process called deamination. This process allows for the safe removal of nitrogenous waste.

4. **Average Urea Excretion**:
- Research and studies indicate that a healthy adult human typically excretes about 25 to 30 grams of urea per day.

5. **Conclusion**:
- Based on the information above, the correct answer to the question is that a healthy adult human excretes approximately 25 to 30 grams of urea per day.

### Final Answer:
- **25 to 30 grams of urea per day**.

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