In the Electron Transport Chain, Exergonic Redox Processes Drive the Endergonic

Question

In the electron transport chain, exergonic redox processes drive the endergonic reaction in which
A) pyruvate is converted to acetyl CoA.
B) ATP is produced by phosphorylation of ADP.
C) G3P is produced from phosphorylation of ADP.
D) ADP is produced by dephosphorylation of ATP.
E) glucose is produced from phosphorylation of ADP.

Accepted Answer

In the electron transport chain, the energy released from exergonic redox reactions is used to pump protons across the mitochondrial membrane, creating a proton gradient. This gradient drives the synthesis of ATP from ADP and inorganic phosphate (Pi) through a process known as oxidative phosphorylation, making choice B correct.