which element is common in haemohlobin and myoglobin

Options

A. Fe
B. Cu
C. Mn
D. Mg

Answer

**Step-by-Step Solution:**

1. **Identify the Molecules**: The question asks about hemoglobin and myoglobin. Both are proteins found in higher animals.

2. **Understand Their Functions**:
- Hemoglobin is primarily responsible for transporting oxygen from the lungs to the rest of the body via the bloodstream.
- Myoglobin, on the other hand, stores oxygen in muscle tissues, making it readily available for muscle contraction.

3. **Analyze Their Composition**: Both hemoglobin and myoglobin are classified as oxygen-binding proteins.

4. **Identify the Common Element**: The key element that plays a crucial role in the oxygen-binding capacity of both hemoglobin and myoglobin is iron (Fe). Iron is the central atom in the heme group of both proteins, allowing them to bind oxygen molecules.

5. **Conclusion**: Therefore, the common element in hemoglobin and myoglobin is iron.

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