Exchange of bicarbonates and chloride ions between RBC and plasma is called `:-`

Options

A. Chloride shift
B. Bohr's effect
C. Haldane's effect
D. Intra cellular respiration

Answer

To solve the question regarding the exchange of bicarbonates and chloride ions between red blood cells (RBC) and plasma, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Context**:
- The question asks about the exchange of bicarbonate (HCO3-) and chloride ions (Cl-) between red blood cells and plasma. This process is essential in the transport of carbon dioxide in the blood.

2. **Carbon Dioxide Transport**:
- Carbon dioxide (CO2) produced by tissues diffuses into the plasma and then into the RBCs. Inside the RBC, CO2 reacts with water (H2O) to form carbonic acid (H2CO3).

3. **Formation of Bicarbonate**:
- The carbonic acid (H2CO3) can dissociate into hydrogen ions (H+) and bicarbonate ions (HCO3-). This reaction is reversible and is crucial for maintaining pH balance in the blood.

4. **Diffusion of Ions**:
- The bicarbonate ions (HCO3-) produced inside the RBC diffuse out into the plasma. To maintain electrical neutrality, chloride ions (Cl-) from the plasma move into the RBCs. This exchange is essential to balance the charge as bicarbonate leaves the RBC.

5. **Naming the Process**:
- The exchange of bicarbonate and chloride ions is a well-known physiological process. It is referred to as the **Hamburger phenomenon** or **Chloride shift**.

6. **Final Answer**:
- Therefore, the exchange of bicarbonates and chloride ions between RBC and plasma is called the **Chloride shift**.