Which is mismatched.

Options

A. Bowman's capsule - Glomerular filtration
B. PCT - Absorption of `Na^+` and `K^+`
C. DCT - Absorption of glucose
D. None of these

Answer

To determine which of the following pairs is mismatched, we need to analyze each option provided in the question:

1. **Bowman's Capsule and Glomerular Filtration**:
- Bowman's capsule is indeed involved in glomerular filtration. It receives the filtrate from the glomerulus, where the filtration process occurs. This pair is correctly matched.

2. **PCT (Proximal Convoluted Tubule) and Absorption of Sodium and Potassium**:
- The proximal convoluted tubule is responsible for the reabsorption of various substances, including sodium and potassium. This pair is also correctly matched.

3. **DCT (Distal Convoluted Tubule) and Absorption of Glucose**:
- The distal convoluted tubule does not absorb glucose. Instead, glucose is completely reabsorbed in the proximal convoluted tubule. Therefore, this pair is mismatched.

4. **None of the Above**:
- This option suggests that all pairs are correctly matched, which is not the case since we have identified a mismatch.

Based on the analysis, the mismatched pair is:

**C. DCT absorption of glucose**

### Step-by-Step Solution:
1. **Identify the Components**: Look at the pairs provided in the question.
2. **Analyze Each Pair**: Determine if each pair is correctly matched based on physiological functions.
3. **Evaluate Bowman's Capsule**: Confirm it is involved in glomerular filtration.
4. **Evaluate PCT**: Confirm it is responsible for the absorption of sodium and potassium.
5. **Evaluate DCT**: Recognize that glucose is not absorbed in the DCT but in the PCT.
6. **Determine the Mismatch**: Identify that the DCT absorption of glucose is incorrect.
7. **Select the Answer**: Conclude that the mismatched pair is option C.