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

Explanation

To solve the question regarding the composition of the fluid in a dialysing unit (artificial kidney), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Composition of Plasma**:
- Plasma is the liquid component of blood that contains water, electrolytes, nutrients, hormones, and waste products, including nitrogenous wastes like urea.

2. **Identify the Purpose of the Dialysing Unit**:
- The dialysing unit (artificial kidney) is designed to filter blood and remove waste products, particularly nitrogenous wastes, from the blood when the kidneys are not functioning properly.

3. **Analyze the Options**:
- The question provides options that include variations of nitrogenous waste and other components. We need to determine which component is not present in the dialysing fluid compared to plasma.

4. **Consider the Role of Urea**:
- Urea is a primary nitrogenous waste product that is typically present in plasma. However, in the dialysing unit, the goal is to remove urea from the blood.

5. **Conclude the Composition of Dialysing Fluid**:
- Since the dialysing fluid is meant to mimic plasma but lacks the waste products that are being removed, the correct answer is that the dialysing fluid has **no urea**.

6. **Select the Correct Option**:
- Based on the analysis, the correct answer is option C: **no urea**.

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

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