Which of the following is correct with respect to uphill transport using channel pumps?

Options

A. Lower concentration to higher concentration utilizing ATP
B. Higher concentration to lower concentration utilizing ATP
C. Higher concentration to lower concentration without utilizing ATP
D. Hypertonic solution to hypotonic solution

Answer

To solve the question regarding uphill transport using channel pumps, we need to analyze the options provided and understand the concept of uphill transport.

### Step-by-Step Solution:

1. **Understanding Uphill Transport**:
- Uphill transport refers to the movement of substances against their concentration gradient, meaning from an area of lower concentration to an area of higher concentration. This process requires energy.

2. **Role of ATP**:
- The energy for uphill transport is often derived from ATP (adenosine triphosphate). This energy is used by transport proteins (pumps) to move ions or molecules across the membrane.

3. **Evaluating the Options**:
- **Option 1**: Lower concentration to higher concentration utilizing ATP.
- This option correctly describes uphill transport because it indicates movement against the concentration gradient and mentions the use of ATP.
- **Option 2**: Higher concentration to lower concentration utilizing ATP.
- This option describes downhill transport, which does not require ATP. Therefore, it is incorrect.
- **Option 3**: Higher concentration to lower concentration without utilizing ATP.
- This option also describes downhill transport, which is incorrect as it does not involve ATP.
- **Option 4**: Hypertonic solution to hypotonic solution.
- This option is misleading because while it describes a type of solution movement, it does not accurately represent the concept of uphill transport.

4. **Conclusion**:
- The only correct option with respect to uphill transport using channel pumps is **Option 1**: Lower concentration to higher concentration utilizing ATP.

### Final Answer:
- The correct answer is **Option 1**.