Assertion: DNA cannot pass through cell membranes
Reason :DNA is a hydrophobic molecule

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion
B. It both Assertion & Reason are True but Reason is not a correct explanation of the Assetion
C. If Assertion is True but the Reason is False
D. If both Assertion & Reason are false

Answer

To solve the question regarding the assertion and reason about DNA and cell membranes, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "DNA cannot pass through cell membranes."
- This is true because cell membranes are primarily composed of a lipid bilayer, which is hydrophobic in nature. DNA, being a large and polar molecule, cannot easily cross this hydrophobic barrier.

2. **Understanding the Reason**:
- The reason states that "DNA is a hydrophobic molecule."
- This statement is false. DNA is actually a hydrophilic molecule due to its negatively charged phosphate backbone. This charge allows it to interact with water and other polar substances.

3. **Evaluating the Relationship**:
- Now we need to determine if the reason correctly explains the assertion.
- Since the assertion is true (DNA cannot pass through cell membranes) but the reason is false (DNA is not hydrophobic but hydrophilic), the reason does not provide a correct explanation for the assertion.

4. **Conclusion**:
- Therefore, we conclude that the assertion is true, but the reason is false.
- The correct answer to the question is that both the assertion and reason are not aligned correctly; the assertion is true while the reason is false.

### Final Answer:
- Assertion: True
- Reason: False
- The correct option is that the assertion is true, but the reason is false.