With the exception of the three irreversible events in glycolysis, gluconeogenesis utilizes the same enzyme processes as glycolysis.
Glycolysis & Gluconeogenesis:
- In contrast to gluconeogenesis, which is crucial for sustaining blood glucose levels during hunger, glycolysis is a catabolic process that hydrolyzes glucose to produce energy and biosynthetic intermediates.
- In the catabolic route of glycolysis, glucose is converted to pyruvate. The anabolic route known as glucose conduction produces glucose from non-carbohydrate sources like glycerol and glucogenic peptides. Pyruvate turns into glucose during the process of gluconeogenesis.
- The general consensus would be that glycolysis and gluconeogenesis don't happen at the same time within similar cells, instead, that metabolic circumstances or allosteric effectors that drive flux along one pathway repress flow in the other direction.
Original question:
1) Gluconeogenesis uses the same enzymatic reactions of glycolysis except for the ________.
A) pyruvate kinase catalyzed step
B) 4 irreversible reactions in glycolysis
C) 3 irreversible reactions in glycolysis
D) 2 irreversible reactions in glycolysis
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