Krebs Cycle

Krebs Cycle begins after the two molecules of the three carbon sugar produced in glycolysis are converted to a slightly different compound (acetyl CoA). Through a series of intermediate steps, several compounds capable of storing "high energy" electrons are produced along with two ATP molecules. These compounds, known as nicotinamide adenine dinucleotide (NAD) and flavin adenine dinucleotide (FAD), are reduced in the process. These reduced forms carry the "high energy" electrons to the next stage.

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Electron Transport

An electron transport chain(ETC) couples electron transfer between an electron donor (such as NADH) and an electron acceptor ( such as o2) to the transfer of H-inos ( protons) across a membrane. the resulting electrochemical proton gradient is used to generate chemical energy in the form of adenosine triphosphate ( ATP). elecrton transport chains are the cellular mechanisms used for extracting energy from sunlight in photosynthesis and also from redox reactions.such as the oxidation of sugars.

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