glycolysis Xinxin

10 steps 1 and 3 of glycolysis are a exergonic b

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Unformatted text preview: D NAD+ & Pi, NADH & H+ D 9 Does glycolysis require oxygen? No: Glycolysis is a parDal breakdown of a six ­carbon glucose molecule into two, three ­carbon molecules of pyruvate, 2NADH +2H+, and 2 net ATP. It is an anaerobic pathway. 10 Steps 1 and 3 of glycolysis are: a. exergonic b. endergonic An endergonic reacDon requires energy. Each of the first two steps of glycolysis require hydrolysis of a molecule of ATP. In step 1, a molecule of ATP is hydrolyzed to transfer a phosphate group to the number 6 carbon of glucose to produce glucose 6 ­ phosphate. In step 3, a second molecule of ATP is hydrolyzed to transfer a phosphate group to the number 1 carbon of fructose 6 ­phosphate to produce fructose 1,6 ­biphosphate. 11 Which of the following reacDons does not use ATP as a substrate in the glycolysis pathway? A Adenylate kinase B Glucokinase C Hexokinase D Phosphofructokinase E Pyruvate kinase E Pyruvate kinase uses ADP as substrate along with PEP to form ATP + pyruvate. Glucokinase and hexokinase both catalyze the phosphorylaDon of glucose using ATP as substrate. Phosphofructokinase catalyzes the phosphorylaDon of F ­6 ­P using ATP as substrate. Adenylate kinase is not part of the glycolysis pathway. 12 The first ATP is generated by which enzyme? 13 The...
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