The Krebs Cycle plays a central role in all of aerobic energy metabolism. What d
ID: 163661 • Letter: T
Question
The Krebs Cycle plays a central role in all of aerobic energy metabolism. What does this statement imply? We learned previously of the importance of fats as an energy storage molecule. When that energy is needed, triacylglycerols are broken down into their main components, glycerol and free fatty acids. What happens to the glycerol? the free fatty acids are then broken down by what process? Where does this process occur in the eukaryotic cell? in each cycle of beta-oxidation, how many carbons are removed? What (if any) coenzymes are reduced? What can be the result of excessive breakdown of fatty acids? What does this do to the body? (We didn't talk about this in class, but you should read about ketosis/ketoacidosis.)Explanation / Answer
29. Krebs cycle plays a central role in all energy of aerobic metabolism.
The citric acid cycle or the Krebs cycle or the TCA cycle is the second step during aerobic respiration is one of the most important step during aerobic respiration.It essentially involves the conversion of the potential energy of various nutrients into the biological energy currency the ATP.This cycle represents the power plant which energizes all metobolism and hence life.
The krebs cycle involves a series of chemical reactions starting with citrate obtained by the de carboxylation of pyruvate from glycolysis which underegoes a series of reactions to result in precursors including amino acids and NADH that are used in a number of biochemical reactions.The NADH and FADH2 formed during the process are ultimately transferred to electron transport chain where they undergo series of oxidation and reduction reaction and hence ATP.
This cycle contributes in a bidirectional manner ,it is an amphibolic path way where both catabolic and anabolic processes occur.On one hand the process is involved in the anabolic process where it is involved in the synthesis of basic molecules on which other metabolic pathways are built upon and at the same time it is also involved in the release of energy stored in macromolecules like carbohydrates ,fats and proteins with the help of oxygen.
Thus citric acid plays a very important role or is the center of life in all aerobic organisms.
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