Glucose and amino acids in the filtrate are reabsorbed by tubular epitheliar cells through

Options

A. Active transport
B. Passive transport
C. Both 1 and 2
D. Osmosis

Answer

### Step-by-Step Solution:

1. **Identify the Location of Reabsorption**:
- Glucose and amino acids are primarily reabsorbed in the Proximal Convoluted Tubule (PCT) of the nephron. This is the first segment of the renal tubule.

2. **Understand the Process of Reabsorption**:
- Reabsorption in the PCT involves both active and passive transport mechanisms.

3. **Define Active Transport**:
- Active transport is the process of moving substances against their concentration gradient, which requires energy (ATP).

4. **Identify the Substances Being Reabsorbed**:
- In this case, glucose and amino acids are the substances being reabsorbed from the filtrate back into the blood.

5. **Explain the Mechanism**:
- Glucose and amino acids are reabsorbed through active transport mechanisms, which involve specific transport proteins in the tubular epithelial cells that utilize energy to move these molecules against their concentration gradient.

6. **Conclude the Answer**:
- Therefore, the correct answer to the question is that glucose and amino acids in the filtrate are reabsorbed by tubular epithelial cells through **active transport**.