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Plasma membrane is made of

1. proteins and carbohydrates
2. proteins and lipids
3. proteins, lipids and carbohydrates
4. proteins, some nucleic acid and lipids

Correct answer: proteins, lipids and carbohydrates

Solution

The plasma membrane is primarily a phospholipid bilayer with proteins embedded in or attached to it. Carbohydrates are also present on the outer surface, usually linked to proteins or lipids, so the membrane contains all three components.

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