Least amount of `CO_(2)` is carried out in____

Answer

To answer the question "Least amount of CO₂ is carried out in____", we can follow these steps:

### Step 1: Understand the Question
The question is asking about the least amount of carbon dioxide (CO₂) that is carried out from the body.

### Step 2: Know the Forms of CO₂ Transport
CO₂ is transported in the body in three main forms:
1. **Dissolved in Plasma**: A small percentage of CO₂ is dissolved directly in the blood plasma.
2. **As Bicarbonate Ions**: The majority of CO₂ is converted to bicarbonate ions (HCO₃⁻) in the blood, which is a significant form of transport.
3. **Bound to Hemoglobin**: CO₂ can also bind to hemoglobin in red blood cells, forming carbamino compounds.

### Step 3: Analyze the Percentages
- Approximately **75%** of CO₂ is transported as bicarbonate ions.
- About **25%** is bound to hemoglobin.
- A very small percentage is dissolved in plasma.

### Step 4: Identify the Least Amount
Since the question asks for the least amount of CO₂ carried out, we can conclude that the least amount of CO₂ is carried in the **dissolved form in plasma**.

### Final Answer
The least amount of CO₂ is carried out in **plasma**.

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