2007-03-01 18:16:15 · 5 answers · asked by ur_cutie_16 1 in Science & Mathematics ➔ Biology
Transport across a cell membrane requiring energy (usually in the form of ATP) is called Active Transport.
Transport not requiring energy is called Passive Transport and an example of that would be osmosis.
2007-03-01 18:25:45 · answer #1 · answered by BP 7 · 0⤊ 0⤋
Active transport requires the cell to spend energy, usually in the form of ATP. Examples include transport of large molecules (non-lipid soluble) and the sodium-potassium pump.
Can as well be define as transport of molecules against a concentration gradient (from regions of low concentration to regions of high concentration) with the aid of proteins in the cell membrane and energy from ATP
2007-03-02 04:36:42 · answer #2 · answered by are biyi 1 · 0⤊ 0⤋
transport against a concentration gradient ( active transport) requires energy in the form of ATP.
2007-03-02 04:53:44 · answer #3 · answered by crystal fox 2 · 0⤊ 0⤋
Active transport because the cell has to push the substances against the concentration gradient
2007-03-02 07:23:09 · answer #4 · answered by emikato_913 2 · 0⤊ 0⤋
Adinosine triphospate (ATP)
2007-03-02 02:48:36 · answer #5 · answered by buckskinbabydoll♥ 4 · 0⤊ 0⤋