2007-10-17 04:01:10 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Based on free energy movement in a system the terms exergonic and endergonic are used to determine the direction of this free energy. An exergonic reaction will release energy from the reaction, while an endergonic reaction will absorb free energy from its surroundings.
In order for an endergonic reaction to go to completion it needs an outside source of energy.
ATP transfers this energy to what ever it is reacting with. When the new chemical receives the P it is said to be phosporylated. Phosphorylation has occurred.
ATP is renewable. ADP + P ------------------> ATP G = + 7.3 kcal / mol (endergonic)
2007-10-17 04:21:41 · answer #1 · answered by ATP-Man 7 · 0⤊ 0⤋
Think of the Adenosine phosphates as little batteries for the cells; each phosphate bond stores some energy, and breaking the bond releases the energy. So Adenosine triphosphate (ATP) has the most energy, and if you wanted to release some of that stored energy you would break a bond and get Adenosine diphosphate (ADP) + a free phosphate + energy. Similarly, going from ADP to AMP releases some energy for the cell to use to drive some other reaction. Then, when you have a surplus of energy you can rebuild the ATP by going AMP to ADP to ATP, storing some energy at each step.
2007-10-17 05:31:51 · answer #2 · answered by John R 7 · 0⤊ 0⤋
energy is stored... ATP is at a higher energy state than ADP. When ATP loses a phosphate and goes to ADP energy is released. So in your case ADP + P to form ATP would store energy.
2007-10-17 04:05:41 · answer #3 · answered by UA_Engineer_UAB_Med_Student 2 · 0⤊ 0⤋
stored because the splitting of ATP into Phosphate and ADP release energy
2007-10-17 04:06:22 · answer #4 · answered by aresha21 3 · 0⤊ 0⤋
The energy between the phosphates in ADP is insufficient for use as an energy source in cellular reactions; it must by phosporylated to ATP before it is worth anything; ATP is the "energy currency" of the cell. ATP "donates" its third phosphate to a molecule to make that molecule more reactive; this is usually called "donating energy." The resulting ADP gets phosphorylated again to ATP, and it's ready to go again...
2016-04-09 12:38:55 · answer #5 · answered by Anonymous · 0⤊ 0⤋
stored because the ADP gains phosphate and becomes ATP(adenosine triphosphate)
2007-10-17 04:11:33 · answer #6 · answered by LOLZ 1 · 0⤊ 0⤋