Gluconeogenesis - A metabolic process by which organisms produce sugars i,.e, glucose from non-carbohydrate precursors for the sake of essential catobolic processess is called gluconeogenesis.
This process i.e, gluconeogenesis occurs in the liver and kidneys.
There are a total of 10 reactions of gluconeogenesis , but out of these 10 only 7 is same with glycolysis.These reactions generally have change in Gibb's free energy ( ΔG) equal or close to zero.Hence easily reversible.But under intracellular conditions the value of ΔG is found to be -63 KJ/mol in case of glycolysis while in case of gluconeogenesis , ΔG is -16 KJ/mol i.e, both pathways are irreversible.The irreversibility of the glycolytic pathway can be attributed to the fact that there is three exorgenic steps which are bypassed in gluconeogenesis.These exorgenic steps are bypassed with help of enzyme that catalyze irreversible steps to ensure the irreversibility of the metabolic pathway.
Gluconeogenesis is essential because :
5. What is Gluconeogenesis? Where does it mainly take place in our body? Why does three...
1.) why does the metabolism of glucose take place in so many steps?
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4) In the absence of O2 fermentation will occur, why?.....what does it yield that the organism needs from these reactions? Why? 5) Gluconeogenesis is the production of glucose from non-carbohydrate precursors. a. What distinguishes glycolysis from gluconeogenesis? (hints: substrates, energetics of reactions, where do they occur) b. What molecule is a key regulator of glycolysis and gluconeogenesis? What does it do? (p. 245)
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