Question

The incremental oxidation of 1 molecule of glucose during cellular respiration produces 30 molecules of ATP according to the balanced equation:
$C_6{H}_{12}{O}_6+6O_2+30ADP+30P_i\to 6H_{2}O+6C{O}_2+30ATP$
ATP is then hydrolyzed by cells for a variety of biochemical processes.
Changes in free energy between glucose oxidation and ATP hydrolysis were compared. The table below illustrates the data collected:

Reaction	Change in Free Energy ($△G$)
Glucose Oxidation	-686 kcal/mol
ATP Hydrolysis	-13 kcal/mol

Which statement best explains the data?

• A. Both glucose oxidation and ATP hydrolysis, are exergonic because they have negative $△G$ values.
• B. Both glucose oxidation and ATP hydrolysis, are exergonic because their products have more free energy than their reactants.
• C. Both glucose oxidation and ATP hydrolysis, are endergonic because they have negative $△G$ values.
• D. Both glucose oxidation and ATP hydrolysis, are endergonic because their products have less free energy than their reactants.

Answer 1

The correct option is A Both glucose oxidation and ATP hydrolysis, are exergonic because they have negative $△G$ values.

Both ATP and Glucose oxidation are energy releasing or exergonic processes as the value of $\delta$G is negative

So, the correct answer is 'Both glucose oxidation and ATP hydrolysis, are exergonic because they have negative △G△G values'