What do you understand by the semipermeability of the cell membrane?

Answer 1

it allows only certain required things and prevent foreign molecules which are harmful entering the cell.

Answer 2

Semipermeability refers to the property of allowing certain substances to pass through while blocking others. In the context of the cell membrane, this means that the membrane selectively permits the passage of molecules and ions based on their size, charge, and polarity, controlling what enters and leaves the cell. This process is crucial for maintaining cell homeostasis and regulating cellular processes.