ACE Mod4.4.docx - 1 Is oxygen required for glycolysis A No it\u2019s not 2 Define glycolysis A A series of endothermic and exothermic reactions that

ACE Mod4.4.docx - 1 Is oxygen required for glycolysis A No...

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1. Is oxygen required for glycolysis? A- No it’s not 2. Define glycolysis. A- A series of endothermic and exothermic reactions that convert glucose into pyruvate with the use of 2 molecules of ATP 3. Why is ATP needed to initiate glycolysis? A- Because it provides the energy needed 4. Describe the first reaction in glycolysis. Is this reaction catalyzed by an enzyme? (2 points) A- The initial reaction, and all the succeeding reactions, is speeded by its own specific enzyme. Yes the enzyme is catalyzed in this process. 5. Define phosphorylation. A- The addition of a phosphate group to a molecule. 6. Describe the second reaction of glycolysis. A- It converts the glucose-6-phosphate into fructose-6-phosphate. 7. The transfer of phosphate groups to glucose and fructose is not a100% transfer of energy. Some energy is lost. In what form is this lost energy? A- Some of the energy is loss in the form of heat. 8. What regulates the speed of the glycolysis pathway? A- The enzyme that catalyzes this reaction (2) regulates the speed of the glycolysis pathway. 9. Describe reaction three of glycolysis. A- The diphosphorylated six-carbon compound (fructose 1,6-diphosphate) is split between the third and fourth carbons. 10. What does PGAL stand for? Give the two names for PGAL. A- 3-phosphoglyceraldehyde, which is also called: glyceraldehyde 3-phosphate 11. What is the energy situation for the cell at the end of glycolysis step three? Has the cell gained new ATP? Is so, how much? Has there been an input of ATP by the cell into the glycolysis reactions? If so,
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