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Lesson 7 Problem Solving Cooldown #4

Posted: Sun Jun 09, 2019 10:15 am
by z3lan
Wouldn't the answer be B? I looked up the delta G values and the hydrolysis of ATP has a delta G of -45 kJ/mol, the hydrolysis of ADP has a delta G of -32, and the hydrolysis of AMP has a delta G of -13. 32-13 = 19 > 43-32 = 11.

Re: Lesson 7 Problem Solving Cooldown #4

Posted: Mon Jun 10, 2019 7:48 am
by NS_Tutor_Will
Thanks for the question!

I think the problem here is that you're thinking about this in terms of the total and not as a series of steps. AMP --> ADP requires 32 kJ/mol. ADP --> ATP requires an additional 45 kJ/mol. In other words, the values you look up cover one step only, not the total energy required to that point.

Does that make sense?