Passive processes for the movement of molecules across the cell surface membrane are:

Explanation

Facilitated diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration with the help of specific transport proteins present in the cell membrane. It allows larger or polar molecules, such as glucose or ions, to pass through the membrane without energy expenditure.Osmosis is the passive movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration, aiming to balance solute levels on both sides of the membrane.Both processes are passive because they occur along the concentration gradient and do not require energy input from the cell.