How does the electron transport chain use the high-energy electrons from glycolysis and the krebs cycle?

QUESTION: How does the electron transport chain use the high-energy electrons from glycolysis and

the krebs cycle?

Together with glycolysis, The Krebs cycle, and the electron transport chain release about 36 molecules of ATP per molecule of glucose.The Krebs cycle uses the two molecules of pyruvic acid formed in glycolysis and yields high-energy molecules of NADH and flavin adenine dinucleotide (FADH2), as well as some ATP. The electron transport chain forms a proton gradient across the inner mitochondrial membrane, which drives the synthesis of ATP

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.