Blood carries the `CO_(2)` in three forms. The correct percentages of `CO_(2)` in the these form are

Options

A. `{:("As carbamino-haemoglobin in RBC","As bicarbonates","Dissolved form in plasma"),(20-25%,70%,7%):}`
B. `{:("As carbamino-haemoglobin in RBC","As bicarbonates","Dissolved form in plasma"),(70%,20-25%,7%):}`
C. `{:("As carbamino-haemoglobin in RBC","As bicarbonates","Dissolved form in plasma"),(20-25%,7%,70%):}`
D. `{:("As carbamino-haemoglobin in RBC","As bicarbonates","Dissolved form in plasma"),(7%,20-25%,70%):}`

Answer

To answer the question regarding how blood carries carbon dioxide (CO₂) in three forms and the correct percentages of CO₂ in these forms, we can break down the information as follows:

### Step-by-Step Solution:

1. **Understanding the Forms of CO₂ in Blood**:
- Carbon dioxide is transported in the blood in three main forms:
1. As carbaminohemoglobin (bound to hemoglobin in red blood cells).
2. As bicarbonate ions (HCO₃⁻) dissolved in plasma.
3. As dissolved CO₂ in plasma.

2. **Percentage of CO₂ as Carbaminohemoglobin**:
- Approximately **20% to 25%** of carbon dioxide is transported as carbaminohemoglobin in red blood cells (RBCs). This occurs when CO₂ binds to hemoglobin.

3. **Percentage of CO₂ as Bicarbonate**:
- About **70%** of carbon dioxide is carried in the form of bicarbonate ions. This conversion happens primarily in red blood cells, where CO₂ reacts with water to form carbonic acid, which dissociates into bicarbonate and hydrogen ions.

4. **Percentage of CO₂ Dissolved in Plasma**:
- Roughly **7%** of carbon dioxide is transported in a dissolved state in the plasma. This is the form that is directly dissolved in the blood plasma.

5. **Summarizing the Percentages**:
- Therefore, the correct percentages of carbon dioxide in the three forms are:
- **Carbaminohemoglobin**: 20% to 25%
- **Bicarbonate**: 70%
- **Dissolved in Plasma**: 7%

### Final Answer:
- The correct percentages of CO₂ in the three forms are:
- **Carbaminohemoglobin**: 20% to 25%
- **Bicarbonate**: 70%
- **Dissolved in Plasma**: 7%

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