AP BIOLOGY

Detailed explanation-1: -This is a type of passive transport in which molecules that cross the cell membrane move quickly due to the presence of specific permeases in the membrane. Facilitated diffusion occurs only in the direction of a concentration gradient and does not require metabolic energy.

Detailed explanation-2: -The movement of molecules across a membrane without the input of energy is known as passive transport.

Detailed explanation-3: -“Passive transport is the movement of ions and molecules across the cell membrane without requiring energy.”

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.

Detailed explanation-5: -What is Passive Transport? Passive transport is the fundamental movement of ions and other molecular substances within the cells along the concentration gradient, without any external energy. It is also known as passive diffusion.