When Glucose is Used as the Energy Source,the Largest Amount

Question

When glucose is used as the energy source,the largest amount of ATP is produced in ____.  
A) glycolysis
B) acetyl-CoA formation
C) the citric acid cycle
D) substrate-level phosphorylation
E) electron transfer phosphorylation

Accepted Answer

The largest amount of ATP is produced during electron transfer phosphorylation, also known as oxidative phosphorylation, which occurs in the mitochondria. This process involves the transfer of electrons from NADH and FADH2 to the electron transport chain, leading to the pumping of protons across the inner mitochondrial membrane. The resulting proton gradient drives the synthesis of ATP through chemiosmosis, producing the majority of ATP during aerobic respiration.