How many ATP molecules are gained (net) in glycolysis per molecule of glucoses?
ID: 222246 • Letter: H
Question
How many ATP molecules are gained (net) in glycolysis per molecule of glucoses? A. One B. Two C. Three D. Four E. Six Where does the majority of gluconeogenesis occur in our bodies? A. kidneys B. Brain C. Skeletal muscle D. Liver E. Erythrocytes Succinate dehydrogenase: A. is a citric acid cycle enzyme found suspended in the mitochondrial matrix. B. produces one GTP per round of the citric acid cycle C. reduces NAD+ to NADH D. causes the liberation of one CO2 per round of the citric acid cycle. E. is also known as succinate Q reductase4 for its function in the electron transport chain. Which of the following enyzmes catalyze irreversible reactions in glycolysis? A. Hexokinase B. Phosphoglycerate kinase C. Glyceraldehyde 3-phosphate dehydrogenase D. Pyruvate kinase E. Phosphofructokinase -1 Which one of the following enzymes are involved in both glycolysis AND gluconeogenesis? A. Hexokinase B. Glucose 6-phosphatase C. Glyceraldehyde 3-phosphate dehydrExplanation / Answer
11. B. Two. In glycolysis a total of 4 ATP are produced but it uses 2 ATP. So net gain is 2 ATP.
12. D. Majority in liver to some extent in kidneys.
13.E. It is also known as succinate coenzyme Q reductase or respiratory complex II in the electron transport chains. Present in mitochondria membrane.
14. A,D and E. Hexokinase, phosphofructokinase1 and pyruvate kinase enzymes catalyze the irreversible steps 1,3and 10 steps of glycolysis respectively.
15. C. glyceraldehyde 3 phosphate dehydrogenase enzyme is common in both glycolysis and Gluconeogenesis.
16.a. Hexokinase. It converts the glucose into glucose 6phosphate the first step of glycolysis
17.b. Alpha-ketoglutarate dehydrogenase convert alpha ketoglutarate a five carbon molecule to succinyl CoA which is a four carbon molecule.
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