Dialysing unit (artificial kidney) contains a fluid which is almost same as plasma except that it has

Options

A. High glucose
B. High urea
C. No urea
D. High uric acid

Answer

### Step-by-Step Solution:

1. **Understanding Dialysis**: Dialysis is a medical procedure that mimics the function of healthy kidneys. It is used for patients whose kidneys are not functioning properly. The process involves filtering waste products from the blood.

2. **Dialysing Unit (Artificial Kidney)**: The artificial kidney, also known as a dialysing unit, contains a special fluid that is used to filter the blood. This fluid is designed to have a composition similar to that of blood plasma.

3. **Composition of Dialysis Fluid**: The dialysis fluid is made by mixing treated water with electrolytes. Its composition is almost identical to that of blood plasma, which includes various ions and nutrients.

4. **Key Difference**: The crucial difference between the dialysis fluid and blood plasma is that the dialysis fluid does not contain urea. Urea is a waste product that is normally present in blood plasma and is excreted by healthy kidneys.

5. **Conclusion**: Therefore, the fluid in the dialysing unit is almost the same as plasma, except that it has no urea in it.

### Final Answer:
The dialysing unit (artificial kidney) contains a fluid which is almost the same as plasma except that it has **no urea**.

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