You may seyou oergeics handout. You may NOT work in groups or got heip from clas

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You may seyou oergeics handout. You may NOT work in groups or got heip from classmates or tutors Phosphocreatine is used by your muscle cells to store chemical energy. The dephosphorylation of phosphocreatine, like that of ATP, is a highly exergonic reaction =-10.3 kcal/mol: Phosphocreatine+ H20creatine+P AG10.3 kcal/mol: ATP + H2O ADP + Pi -7.6 kcal/mol: A. Write a an overall reaction for the transfer of phosphate from phosphocreatine to ADP to generate creatine and ATP. B. Calculate Gr for phosphorylation of ADP by phosphocreatine. hnol C. The reaction in "A" is reversible. Predict if the reaction in-A" will favor ATP production or phosphocreatine production in your muscles cells if the following concentrations are observed at the beginning of the reaction. Justify your answer mathematically. [ADP]= 0.15 mM 1.sno3M phosphocreatine] - 2.5 mM 25M [creatine] = 1 mM i 10-3 M ' On back*

Explanation / Answer

For a reaction to be reversible it got ot be spontaneous. A spontaneous reaction has a negative delta G which free energy. delta G calculated here is positive which means the reaction is irreversible

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