Question:
Which of the following is NOT a component of plasma membrane?
Which of the following is NOT a component of plasma membrane?
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Histones = DNA packing (Nucleus); Phospholipids = Membrane walls.
Updated On: May 14, 2026
- Phospholipids
- Histones
- Integral proteins
- Cholesterol
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The Correct Option is B
Solution and Explanation
Step 1: Concept
The plasma membrane is described by the Fluid Mosaic Model, consisting primarily of a lipid bilayer with embedded proteins.
Step 2: Meaning
Components of the membrane include phospholipids (the bilayer), proteins (integral and peripheral), and steroids like cholesterol.
Step 3: Analysis
Histones are highly basic proteins found in the nucleus of eukaryotic cells. Their primary function is to pack DNA into structural units called nucleosomes. They are never found as a structural component of the plasma membrane.
Step 4: Conclusion
Histones are nuclear proteins, not membrane components. Final Answer: (B)
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