Which element is constituent of biotin?

Options

A. calcium
B. phosphorus
C. sulphur
D. Magnesium

Answer

**Step-by-Step Solution:**

1. **Understanding Biotin**: Begin by recognizing that biotin is a water-soluble vitamin. It plays a crucial role in various bodily functions, including energy metabolism and the health of hair, skin, and nails.

2. **Identifying the Elements**: The question provides four options: calcium, phosphorus, sulfur, and magnesium. We need to determine which of these elements is a constituent of biotin.

3. **Analyzing the Options**:
- **Calcium**: Primarily known for its role in bone health and not a component of biotin.
- **Phosphorus**: Important for energy transfer and bone health, but not a constituent of biotin.
- **Sulfur**: Known to be a part of certain vitamins and amino acids, including biotin.
- **Magnesium**: Involved in many biochemical reactions but not a direct component of biotin.

4. **Conclusion**: Based on the analysis, the element that is a constituent of biotin is sulfur. It is essential for the development of collagen and is also found in keratin, which is important for hair health.

5. **Final Answer**: The correct answer is sulfur.

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