Question

How does water enter and exit a cell? a) By simple diffusion across the membrane b) By simple diffusion or by use of an integral transport protein c) By use of a peripheral transport protein d) By use of an integral transport protein

Answer 1

a) By simple diffusion across the membrane

Step-by-step explanation:

Water moves by osmosis, which is a type of diffusion, into and out of the cell. Through the cell membrane, water molecules flow through osmosis from a lower solute concentration to a higher solute concentration. Water can therefore travel because of a concentration gradient without using any energy.