The reabsorption of glucose from the glomerular filtrate is due to:-

Options

A. High osmotic pressure of filtrate
B. Passive diffusion
C. Active transport across the wall of proximal convoluted part
D. Filtration pressure exerted on the fluids in the loops of Henle

Answer

To solve the question regarding the reabsorption of glucose from the glomerular filtrate, we need to follow these steps:

### Step-by-Step Solution:

1. **Identify the Location of Reabsorption**:
- The reabsorption of glucose occurs in the **proximal convoluted tubule (PCT)** of the nephron.

2. **Understand the Composition of Glomerular Filtrate**:
- The glomerular filtrate contains various substances, including glucose, ions, bicarbonates, water, urea, and uric acid.

3. **Recognize the Reabsorption Mechanism**:
- Glucose is **100% reabsorbed** in the PCT. This process occurs through the **epithelial cells** that line the PCT, specifically the **cuboidal brush border cells**.

4. **Explain the Role of Sodium Gradient**:
- The reabsorption of glucose requires a **sodium gradient**, which is maintained by the use of **ATP**. This is crucial because glucose reabsorption occurs **against its concentration gradient**.

5. **Determine the Type of Transport**:
- Since glucose reabsorption is against the concentration gradient and requires ATP, it is classified as **active transport**.

6. **Evaluate the Options**:
- The options given were:
- High osmotic pressure of filtrate
- Passive diffusion
- Active transport across the wall of proximal convoluted part
- Filtration pressure exerted on the fluids in the loops of Henle
- Based on our understanding, the correct option is **active transport across the wall of proximal convoluted part**.

### Final Answer:
The reabsorption of glucose from the glomerular filtrate is due to **active transport across the wall of proximal convoluted part**.