In Order for Two Reactions to Be Coupled What Conditions

Question

In order for two reactions to be coupled what conditions must be met?
A) They must both be spontaneous
B) One of the reactions must be spontaneous
C) A product of one of the reactions must be a reactant in the second reaction
D) They both must have ATP as a reactant
E) Both B and C must be true

Accepted Answer

For two reactions to be coupled, one of the reactions must be spontaneous to drive the non-spontaneous reaction, and a product of one reaction must serve as a reactant in the second reaction. This allows the energy from the spontaneous reaction to be used to drive the non-spontaneous one, often seen in biochemical pathways.