Cellular respiration is a multipathway process that converts an organic substrate into cellular energy. The majority of energy in the form of ATP is not synthesized until electrons are transferred by ________ and ________ to the electron transport pathway.
A) coenzyme A, FADH₂
B) glucose, NADH
C) coenzyme A, NADH
D) FADH₂ , NADH

Question

Quizplus · Accepted Answer

FADH₂ and NADH are the two electron carriers that transfer electrons to the electron transport pathway, which ultimately results in the synthesis of ATP. Coenzyme A is involved in the Krebs cycle and NADH is synthesized during glycolysis and the Krebs cycle, but neither of them transfer electrons directly to the electron transport chain. Glucose is the initial substrate in cellular respiration, but it does not transfer electrons directly to the electron transport chain.

Cellular Respiration Is a Multipathway Process That Converts an Organic