Which one gives rise to coenzyme

Options

A. `B_(2)`
B. `B_(1)`
C. Nicotinamide
D. All the above.

Answer

To determine which option gives rise to coenzymes, we can analyze each of the provided choices:

1. **Understanding Coenzymes**:
- Coenzymes are organic molecules that assist enzymes in catalyzing reactions. They are often derived from vitamins and are essential for enzyme activity.

2. **Analyzing Each Option**:
- **Option B2 (Riboflavin)**: This vitamin is known to produce coenzymes such as FMN (flavin mononucleotide) and FAD (flavin adenine dinucleotide). Therefore, B2 does give rise to coenzymes.
- **Option B1 (Thiamine)**: This vitamin produces thiamine pyrophosphate (TPP), which is also a coenzyme. Hence, B1 is also a correct answer.
- **Option Nicotinamide**: This is a form of vitamin B3 (niacin) and is converted into coenzymes like NAD (nicotinamide adenine dinucleotide) and NADP (nicotinamide adenine dinucleotide phosphate). Therefore, this option is also correct.

3. **Conclusion**:
- Since all three options (B2, B1, and Nicotinamide) produce coenzymes, the correct answer is **Option 4: All of the above**.

### Final Answer:
The correct answer is **All of the above** (Option 4).