Question : What is the percentage of proteins in the cell membrane?
Option 1: 60-80%
Option 2: 80-100%
Option 3: 20-40%
Option 4: 40-60%
Correct Answer: 40-60%
Solution : The correct answer is 40-60% .
The cell membrane, or plasma membrane, consists of approximately 50% lipid and 50% protein by weight. The plasma membrane, or cell membrane, is the outer covering of all cells, but in a plant cell, it is present below the cell wall. It is mainly composed of a phospholipid bilayer structure with embedded proteins.
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