Multiple choice

Which of the following statements is correct about plasma membrane?

  1. It allows all cells to pass into and out of cells

  2. It prevents all substances from passing into and out of cell

  3. It is composed of mainly a protein bilayer

  4. It is composed mainly of a lipid bilayer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Plasma membrane is selectively permeable and is made up of lipids.

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