Mg is present in

Options

A. Chlorophyll
B. Haemoglobin
C. Vitamin-D
D. Vitamin-B

Answer

**Step-by-Step Solution:**

1. **Identify the Context of Magnesium:**
- Magnesium (Mg) is an essential mineral that plays a crucial role in various biological processes.

2. **List the Biomolecules Mentioned:**
- The video mentions several biomolecules: chlorophyll, hemoglobin, vitamin D, and vitamin B.

3. **Analyze Each Biomolecule for Magnesium Presence:**
- **Chlorophyll:**
- Chlorophyll is a green pigment found in plants that is essential for photosynthesis. It contains magnesium in its structure, which is vital for its function.
- **Hemoglobin:**
- Hemoglobin is a protein in red blood cells responsible for transporting oxygen. It contains iron (Fe), not magnesium.
- **Vitamin D:**
- Vitamin D is a fat-soluble vitamin that helps in the absorption of calcium and phosphorus but does not contain magnesium.
- **Vitamin B:**
- Vitamin B complex includes several vitamins, some of which contain cobalt, but not magnesium.

4. **Conclusion:**
- Based on the analysis, magnesium is present in chlorophyll. Therefore, the correct answer to the question "Mg is present in" is chlorophyll.

**Final Answer:**
- Magnesium is present in chlorophyll.

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