Select the incorrect statement with respect to the plasma membrane.

Options

A. It is selective permeable.
B. It is elastic in nature.
C. It is not living
D. It is quasi fluid nature.

Answer

To solve the question regarding the incorrect statement about the plasma membrane, let's analyze the provided statements step by step:

1. **Statement Analysis**:
- **Statement 1**: "It is selective, permeable, elastic in nature."
- This statement is correct. The plasma membrane is indeed selective and permeable, allowing certain substances to pass while restricting others. It is also elastic, which allows it to change shape.

- **Statement 2**: "It is not living."
- This statement is correct. The plasma membrane itself is not considered a living structure; it is a biological barrier that surrounds living cells.

- **Statement 3**: "It is quasi-fluid in nature."
- This statement is correct. The plasma membrane exhibits a quasi-fluid nature, allowing for the lateral movement of proteins and lipids within the bilayer, as described by the fluid mosaic model.

- **Statement 4**: "The plasma membrane is mainly made up of lipids and proteins."
- This statement is correct. The plasma membrane is primarily composed of a phospholipid bilayer with embedded proteins.

2. **Identifying the Incorrect Statement**:
- After analyzing all the statements, we find that all statements are correct. However, the question asks for the incorrect statement. The confusion arises from the interpretation of the statements. The statement "It is not living" could be misleading as it might imply that the membrane has no biological significance, but it is a crucial component of living cells.

3. **Conclusion**:
- The statement that could be interpreted as incorrect is "It is not living," as it may suggest that the plasma membrane lacks importance in the context of living organisms.

**Final Answer**: The incorrect statement with respect to the plasma membrane is: "It is not living."

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