achiever atp q wrong?

[queenskillers]

---

Members don't see this ad.

achiever q7 test 2.

how the heck is atp exergonic if it is breaking a phosphate bond. to break bonds, you need to aborb energy thus it is endothermic. so how is it exergonic? thanks

Here is their explantion:

ATP + H2O+ ADP + Pi ∆G = -7.3 kcal/mol

From the above reaction, it is crystal clear that ATP can be regenerated via the reverse (non-spontaneous) path where ∆G is positive in value. In an exergonic reaction, the reactant(s) (ATP in this case) involved can never be thermodynamically more stable than the product(s) formed. ATPs are prime energy sources driving cellular metabolic processes, by coupling their exergonic (spontaneous) reactions to essentially any endergonic (non-spontaneous) reactions you could ever think of!

 

[predentn]

achiever q7 test 2.

how the heck is atp exergonic if it is breaking a phosphate bond. to break bonds, you need to aborb energy thus it is endothermic. so how is it exergonic? thanks

Here is their explantion:

ATP + H2O+ ADP + Pi ∆G = -7.3 kcal/mol

From the above reaction, it is crystal clear that ATP can be regenerated via the reverse (non-spontaneous) path where ∆G is positive in value. In an exergonic reaction, the reactant(s) (ATP in this case) involved can never be thermodynamically more stable than the product(s) formed. ATPs are prime energy sources driving cellular metabolic processes, by coupling their exergonic (spontaneous) reactions to essentially any endergonic (non-spontaneous) reactions you could ever think of!

.

 

[smec]

achiever q7 test 2.

how the heck is atp exergonic if it is breaking a phosphate bond. to break bonds, you need to aborb energy thus it is endothermic. so how is it exergonic? thanks

Here is their explantion:

ATP + H2O+ ADP + Pi ∆G = -7.3 kcal/mol

From the above reaction, it is crystal clear that ATP can be regenerated via the reverse (non-spontaneous) path where ∆G is positive in value. In an exergonic reaction, the reactant(s) (ATP in this case) involved can never be thermodynamically more stable than the product(s) formed. ATPs are prime energy sources driving cellular metabolic processes, by coupling their exergonic (spontaneous) reactions to essentially any endergonic (non-spontaneous) reactions you could ever think of!

As extracted from Wikipedia:

ATP + H2O → ADP(hydrated) + Pi(hydrated) + H+(hydrated) ΔG˚ = -30.54 kJ/mol (−7.3 kcal/mol)
ATP + H2O → AMP(hydrated) + PPi(hydrated) + H+(hydrated) ΔG˚ = -45.6 kJ/mol (−10.9 kcal/mol)

It's noted that the products are all hydrated and these collective weak bonds formed will likely give off heat more than the heat needed to break just one Pi from ATP. Just my opinion. 🙂