AP BIOLOGY

Detailed explanation-1: -Passive transport is a type of cellular transport in which substances such as ions and molecules move down their respective concentration gradients. It means that the substance tends to move from an area of higher concentration to an area of lower concentration.

Detailed explanation-2: -Passive transport describes the movement of substances down a concentration gradient and does not require energy consumption. Diffusion is the net movement of substances from an area of higher concentration to an area of lower concentration.

Detailed explanation-3: -Solutes move with the concentration gradient, therefore no energy is used. Movement of materials from high to low concentration through a protein channel.

Detailed explanation-4: -In passive transport, substances move from an area of higher concentration to an area of lower concentration in a process called diffusion. A physical space in which there is a different concentration of a single substance is said to have a concentration gradient.