How much amount of carbondioxide is transported by plasma?

Options

A. (1) 75 % to 78%
B. (2)5% to 7%
C. (3) 20% to 25%
D. (4)93%

Answer

To determine how much carbon dioxide is transported by plasma, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Role of Blood in Gas Transport**: Blood is responsible for transporting gases such as oxygen and carbon dioxide throughout the body. It consists of plasma and red blood cells (RBCs).

2. **Identify the Forms of Carbon Dioxide Transport**:
- Carbon dioxide is transported in three main forms:
- **Dissolved in Plasma**: A small percentage of carbon dioxide is transported dissolved directly in the plasma.
- **As Bicarbonate**: The majority of carbon dioxide is converted to bicarbonate ions (HCO3-) and transported in this form.
- **Bound to Hemoglobin**: A portion of carbon dioxide binds to hemoglobin in red blood cells.

3. **Quantify the Transport of Carbon Dioxide**:
- According to the information provided:
- About **70%** of carbon dioxide is transported as bicarbonate.
- Approximately **20-25%** is transported bound to hemoglobin in red blood cells.
- Around **5-7%** is transported dissolved in plasma.

4. **Select the Correct Option**: Given the options provided:
- 75% to 78%
- 5% to 7%
- 20% to 25%
- 93%

The correct option that represents the amount of carbon dioxide transported by plasma is **5% to 7%**.

### Final Answer:
The amount of carbon dioxide transported by plasma is **5% to 7%**.

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