FAD or FMN is a coenzyme. Which vitamin is incorporated into its structure

Options

A. Vitamin C
B. Vitamin `B_1`
C. Vitamin `B_6`
D. Vitamin `B_2`

Answer

To solve the question regarding which vitamin is incorporated into the structure of FAD (Flavin Adenine Dinucleotide) or FMN (Flavin Mononucleotide), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Coenzymes**:
- Coenzymes are organic molecules that assist enzymes in catalyzing reactions. They often derive from vitamins.

2. **Identifying the Options**:
- The options provided are:
- Vitamin C
- Vitamin B1
- Vitamin B6
- Vitamin B2

3. **Analyzing Each Option**:
- **Vitamin C**:
- This vitamin does not form any coenzymes. Therefore, it can be ruled out.
- **Vitamin B1**:
- This vitamin is associated with the coenzyme thiamine pyrophosphate. Thus, it is not related to FAD or FMN.
- **Vitamin B6**:
- This vitamin forms the coenzyme pyridoxal phosphate, which is also not related to FAD or FMN.
- **Vitamin B2**:
- This vitamin is known to be the precursor for the coenzymes FMN and FAD.

4. **Conclusion**:
- Since FAD and FMN are derived from Vitamin B2, the correct answer is Vitamin B2.

### Final Answer:
The vitamin incorporated into the structure of FAD or FMN is **Vitamin B2**.