If A has a free energy of 38 units, and C has a free energy of 45 units, and the reaction is exergonic, based on the calculation of free energy, which is the substrate and which is the product?
A) A is the substrate and C is the product.
B) C is the substrate and A is the product.
C) It is impossible to tell with this information.
D) Both A and C are the products.
E) Both A and C are the substrates.

Question

Quizplus · Accepted Answer

In an exergonic reaction, the free energy decreases from substrate to product. Since A has a lower free energy (38 units) than C (45 units), C must be the substrate and A the product, indicating the reaction releases energy.

If a Has a Free Energy of 38 Units, and C