The cell membrane is said to be "selectively permeable" because it:

Question

Quizplus · Accepted Answer

The cell membrane allows only certain substances to pass through based on their size, charge, and other factors. This is what makes it selectively permeable. It does not allow all substances to enter or leave the cell, nor does it only allow water and salts to enter the cell. Option D is also not accurate as there are certain molecules (such as glucose) that are larger than water molecules but can still pass through the cell membrane via specific transport proteins.

The Cell Membrane Is Said to Be "Selectively Permeable" Because