Which of following is correct statement ?

Options

A. Facilitated transport and active transport both are sensitive to inhibitors
B. Facilitated transport and simple diffusion both do not requires ATP energy
C. Both facilitated transport and active trasnport are highly selective
D. All the above

Answer

To determine which of the following statements is correct, we will analyze each option step by step.

### Step 1: Analyze the first statement
The first statement claims that "facilitated transport and active transport both are sensitive to inhibitors."

- **Explanation**: Facilitated transport involves the use of proteins (gated channel proteins and carrier proteins) to help move substances across cell membranes without the use of energy. Active transport, on the other hand, requires energy (usually from ATP) to move substances against their concentration gradient. Both processes can be inhibited by various substances that interfere with the proteins involved.

- **Conclusion**: This statement is correct.

### Step 2: Analyze the second statement
The second statement claims that "facilitated transport and simple diffusion both do not require ATP energy."

- **Explanation**: Simple diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration without the need for energy. Facilitated transport also does not require ATP; it utilizes carrier proteins or channel proteins to assist in the movement of substances down their concentration gradient.

- **Conclusion**: This statement is also correct.

### Step 3: Analyze the third statement
The third statement claims that "both facilitated transport and active transport are highly selective."

- **Explanation**: Facilitated transport is selective because it uses specific carrier proteins that only allow certain molecules to pass through. Active transport is also selective, as it typically involves specific pumps that transport particular ions or molecules against their concentration gradient.

- **Conclusion**: This statement is correct as well.

### Step 4: Analyze the fourth statement
The fourth statement claims that "all the above" statements are correct.

- **Explanation**: Since we have established that the first, second, and third statements are all correct, this statement logically follows.

- **Conclusion**: This statement is correct.

### Final Answer
Based on the analysis of all the statements, the correct answer is **Option 4: All the above**.

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