2006-10-22 16:55:49 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Biology
the concentration gradient determines whether its active or passive.
2006-10-22 17:06:40 · answer #1 · answered by sandyclaws08 2 · 2⤊ 0⤋
The defining difference is that active transport requires the expenditure of chemical energy (generally in the form of ATP). Passive transport happens automatically due to a difference in concentration or a chemical reaction with proteins. Active transport happens in opposition to an electrochemical gradient.
2006-10-22 16:57:52 · answer #2 · answered by DavidK93 7 · 0⤊ 0⤋
Passive transport occurs when there is difference between substances, it happens when molecules of a substance move from an area of higher concentration to areas of lower concentration while active transport molecules will have to move from area of lower concentration to higher concentration, energy is required for active transport, example of which potassium to enter the cell despite the higher concentration of potassium inside the cell while it allows sodium to constantly pass out of the cell despite the higher concentration of sodium outside the cell.
2006-10-22 20:21:27 · answer #3 · answered by ofalsa 2 · 1⤊ 0⤋
One is powered by ATP and the other is not; for the simplistic answer.
2006-10-22 16:59:09 · answer #4 · answered by Anonymous · 0⤊ 0⤋
I dont get what you said
2006-10-22 17:10:09 · answer #5 · answered by goodguy_a2000 2 · 0⤊ 0⤋