AP BIOLOGY

Detailed explanation-1: -NADH and FADH2 made in the citric acid cycle (in the mitochondrial matrix) deposit their electrons into the electron transport chain at complexes I and II, respectively. This step regenerates NAD+ and FAD (the oxidized carriers) for use in the citric acid cycle.

Detailed explanation-2: -FADH2: High energy electron carrier used to transport electrons generated in Glycolysis and Krebs Cycle to the Electron Transport Chain.

Detailed explanation-3: -NADH and FADH2 carry high-energy electrons to the electron transport chain in cellular respiration. NADPH carries high-energy electrons to the electron transport chain in photosynthesis.

Detailed explanation-4: -Electrons from acyl-CoA are donated to an electron-transfer flavoprotien which are then transferred to ETF (Electron-transferring flavoprotein) Dehydrogenase in the form of [FADH2]. ETF dehydrogenase then passes those electrons from [FADH2] to ubiquinone and on through the ETC.

Detailed explanation-5: -The electron transport chain contains a number of electron carriers. These carriers take the electrons from NADH and FADH2, pass them down the chain of complexes and electron carriers, and ultimately produce ATP.