## ATP QUESTION ON FINAL

Fdonovan 3D
Posts: 101
Joined: Sat Aug 17, 2019 12:16 am

### ATP QUESTION ON FINAL

Can someone explain to me the ATP hydrolysis question from the final? I’m not sure how the value of Q was supposed to be determined I just felt like I wasn’t picking up on some given information.

ayushibanerjee06
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### Re: ATP QUESTION ON FINAL

it said that all inorganic phosphate came from ADP so you can use the stoichiometry to find how much Pi you have. you can calculate Q from there

Charysa Santos 4G
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Joined: Wed Sep 18, 2019 12:21 am

### Re: ATP QUESTION ON FINAL

ayushibanerjee06 wrote:it said that all inorganic phosphate came from ADP so you can use the stoichiometry to find how much Pi you have. you can calculate Q from there
I believe that the question stated that the phosphate actually came from ATP, not ADP

Michael Du 1E
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Joined: Sun Sep 22, 2019 12:16 am

### Re: ATP QUESTION ON FINAL

it said that all inorganic phosphate came from ATP so I assumed that the phosphate, as a result, had the same concentration as ATP which was 4 x 10^3 or something I believe. As a result, my reaction quotient equation was: ((ADP)(P)/(ATP) / (9 x 10^-6)(4 x 10^-3)/ (4 x 10^-3). However, I am not sure if I did the problem correctly as I heard some people got different answers.

However, I do believe that the statement of how all inorganic phosphate came from ATP was important in order to solve the problem

Eugene Chung 3F
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### Re: ATP QUESTION ON FINAL

Sine it says pi comes from ATP, the two concentrations cancels and K depends on [ADP] only.

Posts: 111
Joined: Thu Jul 25, 2019 12:17 am

### Re: ATP QUESTION ON FINAL

Eugene Chung 3F wrote:Sine it says pi comes from ATP, the two concentrations cancels and K depends on [ADP] only.

Maybe I am wrong about how I interpreted this problem, but I assumed that since all the Pi came from ATP, I assumed it meant that it only came from ATP that was broken into ADP...so Pi = ADP concentration...

I'm worried now, but I guess "it is what it is"...

Joseph Saba
Posts: 154
Joined: Thu Jul 11, 2019 12:16 am

### Re: ATP QUESTION ON FINAL

Eugene Chung 3F wrote:Sine it says pi comes from ATP, the two concentrations cancels and K depends on [ADP] only.

Maybe I am wrong about how I interpreted this problem, but I assumed that since all the Pi came from ATP, I assumed it meant that it only came from ATP that was broken into ADP...so Pi = ADP concentration...

I'm worried now, but I guess "it is what it is"...

I did the same as you, ATP and Pi cancel out according to my understanding of the quesiton

ayushibanerjee06
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### Re: ATP QUESTION ON FINAL

sorry I meant ATP and not ADP. yeah I did everything that everyone else mentioned above.

Ayushi2011
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Joined: Wed Feb 27, 2019 12:17 am

### Re: ATP QUESTION ON FINAL

Owen-Koetters-4I
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