The composition of blood plasma and dialysing fluid is same w.r.t. all components except

Options

A. Glucose
B. Nitrogenous wastes
C. Amino acids
D. Na^+ ions

Answer

To solve the question regarding the composition of blood plasma and dialysing fluid, we will analyze the components of both fluids step by step.

### Step-by-Step Solution:

1. **Understanding Blood Plasma Composition**:
- Blood plasma is the liquid component of blood and contains various substances. Key components include:
- Water
- Electrolytes (e.g., sodium, potassium)
- Nutrients (e.g., glucose, amino acids)
- Proteins (e.g., albumin, antibodies)
- Nitrogenous wastes (e.g., urea, creatinine)

2. **Understanding Dialysing Fluid Composition**:
- Dialysing fluid, also known as dialysate, is a solution used in dialysis to remove waste products from the blood. Its composition typically includes:
- Pure water
- Electrolytes (e.g., sodium, bicarbonate)
- Nutrients (e.g., glucose, amino acids)
- However, it does not contain nitrogenous wastes.

3. **Comparison of Components**:
- When comparing the two, we note that both blood plasma and dialysing fluid contain:
- Glucose
- Amino acids
- Electrolytes (such as sodium)
- The key difference lies in the presence of nitrogenous wastes.

4. **Identifying the Exception**:
- The question asks for the component that differs between blood plasma and dialysing fluid.
- While blood plasma contains nitrogenous wastes, the dialysing fluid does not have these wastes.

5. **Conclusion**:
- Therefore, the component that is present in blood plasma but absent in dialysing fluid is **nitrogenous waste**.

### Final Answer:
The composition of blood plasma and dialysing fluid is the same with respect to all components except **nitrogenous waste**.

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