Amount of oxygen present in one gram of haemoglobin is

Options

A. 20 ml
B. 1.340 ml
C. 13.4 ml
D. none of the above

Answer

To determine the amount of oxygen present in one gram of hemoglobin, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Hemoglobin Function**: Hemoglobin is an oxygen-carrying protein found in red blood cells. Its primary role is to transport oxygen from the lungs to the tissues and return carbon dioxide from the tissues back to the lungs.

2. **Composition of Hemoglobin**: Each hemoglobin molecule consists of four heme groups, which can bind to oxygen. This means that a single hemoglobin molecule can carry up to four oxygen molecules.

3. **Oxygen Binding Capacity**: The amount of oxygen that can be carried by hemoglobin is approximately 1.34 to 1.39 milliliters of oxygen per gram of hemoglobin.

4. **Evaluate the Options**: The question provides several options:
- 20 ml
- 1.34 ml
- 13.4 ml
- None of the above

5. **Identify the Correct Answer**: Based on the information that one gram of hemoglobin carries about 1.34 to 1.39 ml of oxygen, the correct choice among the options is **1.34 ml**.

### Final Answer:
The amount of oxygen present in one gram of hemoglobin is **1.34 ml**.

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