Select the incorrect statement w.r.t active transport.

Options

A. Uphill movement of materials takes place across the membrane
B. Solute particles move against the concentration gradient
C. Energy dependent process
D. Active transport do not requires energy

Answer

To solve the question of identifying the incorrect statement with respect to active transport, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Active Transport**:
- Active transport is a biological process that moves molecules across a cell membrane from a region of lower concentration to a region of higher concentration. This is known as "uphill" movement.

2. **Analyze the Statements**:
- **Statement A**: "Uphill movement of materials takes place across a membrane."
- This statement is correct because active transport involves moving substances against their concentration gradient.

- **Statement B**: "Solute particles move against the concentration gradient."
- This statement is also correct as active transport specifically refers to the movement of solutes from areas of lower concentration to areas of higher concentration.

- **Statement C**: "Energy dependent process."
- This statement is correct because active transport requires energy, typically in the form of ATP, to move substances against their concentration gradient.

- **Statement D**: "Active transport doesn't require energy."
- This statement is incorrect. Active transport does require energy to function, as it is moving substances against their concentration gradient.

3. **Identify the Incorrect Statement**:
- Based on the analysis, the incorrect statement is **Statement D**: "Active transport doesn't require energy."

### Conclusion:
The answer to the question is **Statement D**.

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