AP BIOLOGY

Detailed explanation-1: -“Passive transport is the movement of ions and molecules across the cell membrane without requiring energy.”

Detailed explanation-2: -Passive transport is a naturally occurring phenomenon and does not require the cell to expend energy to accomplish the movement. In passive transport, substances move from an area of higher concentration to an area of lower concentration in a process called diffusion.

Detailed explanation-3: -Diffusion. One method of movement through the membrane is diffusion. Diffusion is the movement of molecules from a region of higher concentration to one of lower concentration.

Detailed explanation-4: -Passive transport is defined as movement of a solute from a region of high electrochemical potential on one side of the cell membrane to a region of lower electrochemical potential on the opposite side.