Multiple choice general knowledge

The main function of plasma membrane is to

  1. Control all cellular activities

  2. Store cell material

  3. Maintain the cell shape and size

  4. Regulate the flow of material into and outside the wall
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The plasma membrane (cell membrane) primarily regulates the transport of materials in and out of the cell through selective permeability. It does not control all cellular activities (that's the nucleus), store materials (that's vacuoles), or maintain shape alone (that's the cell wall in plants).

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