AP BIOLOGY

Detailed explanation-1: -During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP). It is the opposite of passive transport.

Detailed explanation-2: -The movement of solute particles from low to high concentration is known as C: active transport. During active transport, the movement of solute particles occurs against the concentration gradient. This means that solute particles move from an area of lower concentration to an area of higher concentration.

Detailed explanation-3: -Active transport is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration.

Detailed explanation-4: -Active transport is the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by proteins and requiring energy.