What does the cell membrane do to avoid hings going inside the cell?

Answer 1

Cell membrane is a Selectively Permeable Membrane so it does not allow all the substances to pass through it.It controls the movement of substances in and out of the substances.Unlike a cell membrane,the cell wall has large holes in it allowing the water and dissolved minerals to pass through hence cell wall is known as Freely Permeable Membrane.

Answer 2

The cell membrane selectively allows substances to enter or exit the cell through a process called cellular transport. It uses proteins and channels to regulate the movement of molecules, ensuring that only necessary substances are allowed in while potentially harmful substances are kept out. This helps maintain the cell's internal environment and protect it from harm.