The Question is from neet-botany , and it was created by the author B VENKAT

Question

According to Singer and Nicolson model of cell membrane

B VENKAT · Accepted Answer

## CORE INFORMATION
✓ **Answer**: [A]
## CONCEPT FRAMEWORK
	**Primary Concept**: Fluid Mosaic Model of Cell Membrane
	**Related Topics**: Lipid Bilayer, Membrane Proteins (Integral and Peripheral), Membrane Fluidity
	**Prerequisites**: Basic understanding of cell membrane structure and its components.
## SOLUTION PATHWAY
**Given Information**:
	The question refers to the Singer and Nicolson model of the cell membrane.
	The correct answer is related to the movement of components within the membrane.
**Method & Steps**:
	1. **Recall the Fluid Mosaic Model**: The Singer and Nicolson model describes the cell membrane as a fluid structure where proteins are embedded within a lipid bilayer.
		Reasoning: This model emphasizes the dynamic nature of the membrane.
		Formula/Rule: None applicable.
	2. **Analyze option A**: Option A states that the quasi-fluid nature of lipids allows for lateral movement of proteins.
		Working: This aligns with the fluid mosaic model, where lipids can move laterally and allow proteins to move within the bilayer.
		Key Point: The fluidity of the lipid bilayer is crucial for membrane function.
	3. **Analyze option B**: Option B incorrectly states that the fluidity of proteins enables lipid movement.
		Working: Lipids are primarily responsible for membrane fluidity, not proteins.
		Key Point: Proteins are embedded within the lipid bilayer, not the reverse.
	4. **Analyze option C**: Option C incorrectly states that peripheral proteins are totally buried within the phospholipid bilayer.
		Working: Peripheral proteins are associated with the membrane surface, not embedded within.
		Key Point:  Peripheral proteins are not deeply embedded like integral proteins.
	5. **Analyze option D**: Option D incorrectly states that tunnel proteins lie on the surface of the cell membrane.
		Working: Tunnel proteins (channel proteins) are integral proteins that span the lipid bilayer.
		Key Point: Tunnel proteins must pass through the hydrophobic core of the membrane to function.
 	6. **Final step**: Option A is correct as it accurately describes the dynamic nature of the membrane and the movement of proteins within the lipid bilayer.
		Result: Option A is the correct answer.
		Verification: The statement aligns with the principles of the fluid mosaic model.
## OPTION ANALYSIS
[A] ✓: Correct. The lipid bilayer's fluidity enables lateral movement of proteins.
[B] :x: Incorrect.  Proteins are not responsible for the fluidity that enables lipid movement.
[C] :x: Incorrect. Peripheral proteins are located on the surface, not buried.
[D] :x: Incorrect. Tunnel proteins are transmembrane proteins.
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing the roles of lipids and proteins in membrane fluidity: Remember, lipids are primarily responsible for membrane fluidity.
		2. Misunderstanding the location of membrane proteins: Distinguish between integral and peripheral proteins.
	**Quick Tips**:
		1. Visualize the fluid mosaic model: Think of proteins floating within a sea of lipids.
		2. Use mnemonics:  Think of 'L' for lipid fluidity and 'P' for peripheral proteins on the surface.

B VENKAT · Answer

The correct Option is "The quasi-fluid nature of lipid enables lateral movement of protein within over all bilayer"

B VENKAT · Answer

The quasi-fluid nature of protein enables lateral movement of lipid

B VENKAT · Answer

Peripheral proteins are totally buried in the phospholipid bilayer

B VENKAT · Answer

Tunnel proteins lie on the surface of cell membrane

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