The amount of oxygen transported by 100ml of blood under strenuous condition is approximately

Options

A. 5 ml
B. 50 ml
C. 15 ml
D. 150 ml

Answer

To determine the amount of oxygen transported by 100 ml of blood under strenuous conditions, we can break down the process into the following steps:

### Step-by-Step Solution:

1. **Understanding Normal and Strenuous Conditions**:
- Under normal conditions, the body utilizes oxygen at a standard rate.
- Under strenuous conditions (like exercise), the demand for oxygen increases significantly as the body requires more energy.

2. **Oxygen Transport Capacity of Blood**:
- 100 ml of oxygenated blood can carry approximately 20 ml of oxygen. This is a standard value for oxygen transport in the bloodstream.

3. **Oxygen Utilization Under Normal Conditions**:
- During normal conditions, about 5 ml of oxygen is utilized by the tissues from the 100 ml of oxygenated blood. This represents about 25% of the total oxygen available in the blood.

4. **Oxygen Utilization Under Strenuous Conditions**:
- In strenuous conditions, the demand for oxygen increases. It is estimated that about 15 ml of oxygen is utilized by the tissues from the 100 ml of oxygenated blood during such conditions. This represents about 75% of the total oxygen available in the blood.

5. **Final Answer**:
- Therefore, the amount of oxygen transported by 100 ml of blood under strenuous conditions is approximately **15 ml of O2**.

### Conclusion:
The answer to the question is that under strenuous conditions, approximately **15 ml of oxygen** is transported by 100 ml of blood.

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