The chemical formula of oxyhaemoglobin is

Options

A. `Hb(O_(2))_(4)`
B. `Hb(O_(3))_(4)`
C. `Hb_(2)O_(2)`
D. `Hb(O_(2))_(6)`

Answer

To find the chemical formula of oxyhemoglobin, we need to understand the composition of hemoglobin and how it interacts with oxygen.

### Step-by-Step Solution:

1. **Understanding Hemoglobin**: Hemoglobin is a globular protein found in red blood cells. It is responsible for transporting oxygen from the lungs to the tissues and carbon dioxide from the tissues back to the lungs.

2. **Structure of Hemoglobin**: Hemoglobin consists of four polypeptide chains: two alpha chains and two beta chains. Each of these chains contains a heme group, which is a complex of iron and a porphyrin ring.

3. **Iron in Hemoglobin**: Each heme group contains an iron ion (Fe²⁺) that can bind to one molecule of oxygen (O₂). Since there are four heme groups in one hemoglobin molecule, it can bind to a total of four oxygen molecules.

4. **Chemical Formula Representation**: The chemical formula for oxyhemoglobin can be represented as:
- Hb (for hemoglobin) + 4 O₂ (for the four oxygen molecules it can bind)
- Therefore, the formula can be written as HbO₄, which indicates that one hemoglobin molecule can carry four oxygen molecules.

5. **Selecting the Correct Option**: Among the given options:
- HbO₂-4 (indicating one hemoglobin and four oxygen molecules) is the correct representation of oxyhemoglobin.

Thus, the correct answer is **HbO₂-4**.