Unlike passive transport, which uses the kinetic energy and natural entropy of molecules moving down a gradient, active transport uses cellular energy to move them against a gradient, polar …

Oct 20, 2016 · Active transport relies on the use of energy to move substances into and out of cells. Usually, molecules are traveling against a concentration gradient.

The meaning of ACTIVE TRANSPORT is the movement of a chemical substance by the expenditure of energy against a gradient in concentration or in electrical potential across a …

Aug 23, 2025 · Active transport differs from passive transport, which includes processes like diffusion, facilitated diffusion, and osmosis. A key distinction lies in the energy requirement: …

Aug 3, 2023 · Active transport is the energy-driven transportation of ions, small molecules, and solutes across the biological membrane against an electrochemical gradient (for ions) or …

Active transport differs from passive transport in that it requires energy to move molecules against their concentration gradient, whereas passive transport relies on natural movement along a …

Feb 2, 2023 · Active transport is an energy or ATP-dependent, cellular transport process that selectively moves substances from an area of low concentration to an area of high …

Active transport is essential for moving molecules against their concentration gradients, requiring energy. There are two types: primary active transport, which directly uses ATP hydrolysis, and …

Oct 10, 2025 · The process by which cells transfer substances from a region of lower concentration to one of higher concentration against the normal flow of diffusion is known as …

Aug 18, 2025 · Active transport involves moving molecules or ions across a cell membrane from an area of lower concentration to an area of higher concentration, a process that goes against …