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: -Active transport requires energy for the process by transporting molecules against a concentration or electrochemical gradient.

Detailed explanation-3: -The type of transport that moves material against the concentration gradient with the use of energy is called active transport. That energy that it uses is usually in the form of adenosine triphosphate (ATP).

Detailed explanation-4: -“Active Transport is defined as a process that involves the movement of molecules from a region of lower concentration to a region of higher concentration against a gradient or an obstacle with the use of external energy.”

Detailed explanation-5: -Active transport, also known as uphill transport, requires the transport of molecules from a low-concentration region to a high-concentration region. Therefore, active transport must couple to another spontaneous process to transport charged or uncharged substrates against their thermodynamic forces.