What source of energy is used in active transport?

Answer 1

Energy for primary active transport comes from ATP molecules. ATP is produced by the mitochondria. e.g. Na+/K+ ATPases are archetypal primary active transporters and they transport 3 Na+ ions out of cells and 2 K+ ions into cells by hydrolyzing one molecule of ATP. Energy for secondary active transport is stored in an established concentration gradient of ions across the cell membrane and drives transport with the tendency of ions to move from an area of high concentration to an area of lower concentration. e.g. Na+/glucose secondary transporters use the Na+ gradient (higher outside cells than inside) established by Na+/K+ ATPases to transport a molecule of glucose along with a sodium ion into cells.

Answer 2

Active transport uses energy in the form of adenosine triphosphate (ATP) to pump molecules against their concentration gradient across a cell membrane. ATP provides the necessary energy for the carrier proteins involved in active transport to move molecules from an area of low concentration to an area of high concentration.

Answer 3

An active transport uses cellular energy. Active transport moves a substance against its electrochemical gradient. The membrane spanning protein uses its energy source.

Answer 4

All celluar transport requires Adenosine triphosphate (ATP)

Answer 5

mitochondria

Answer 6

It uses membrane proteins as energy.

Answer 7

ATP