QUESTION 10 Which of the statements below regarding the metabolic fate of acetyl CoA is false? a) Acetyl CoA is catabolized through the citric acid cycle when the cell is in a low energy charge state. b) Acetyl CoA is used to form fatty acids when the cell is in a high energy charge state. c) Acetyl CoA is used to form cholesterol. d) Acetyl CoA can be used to form pyruvate when glucose intake is low, the pyruvate is then metabolized to glucose through gluconeogenesis. e) All of the above are metabolic fates of acetyl CoA. QUESTION 11 Which of the following is not a metabolic fate for glucose-6-phosphate? a) Glucose-6-phosphate can be metabolized to ribose-5-phosphate. b) Glucose-6-phosphate can be metabolized to pyruvate. c) Glucose-6-phosphate can be metabolized to glycogen. d) All of the above metabolic fates of glucose-6-phosphate are true. e) a and b

QUESTION 10 Which of the statements below regarding the metabolic fate of acetyl CoA is false? a) Acetyl CoA is catabolized through the citric acid cycle when the cell is in a low energy charge state. b) Acetyl CoA is used to form fatty acids when the cell is in a high energy charge state. c) Acetyl CoA is used to form cholesterol. d) Acetyl CoA can be used to form pyruvate when glucose intake is low, the pyruvate is then metabolized to glucose through gluconeogenesis. e) All of the above are metabolic fates of acetyl CoA. QUESTION 11 Which of the following is not a metabolic fate for glucose-6-phosphate? a) Glucose-6-phosphate can be metabolized to ribose-5-phosphate. b) Glucose-6-phosphate can be metabolized to pyruvate. c) Glucose-6-phosphate can be metabolized to glycogen. d) All of the above metabolic fates of glucose-6-phosphate are true. e) a and b

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter7: Cellular Respiration

Section: Chapter Questions

Problem 19CTQ: Nearly all organisms on Earth carry out some form of glycolysis. How does this fact support or not...

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QUESTION 22 When the final product of a series of enzymatically-catalyzed reactions binds to the first enzyme in the pathway to limit its production, it generally uses ___ because the structure of this final product is generally not similar to that of any of the enzyme's normal substrates. Allosteric activation Zymogen activation Covalent modification Competitive inhibition Allosteric inhibition
QUESTION 1 a. John has just taken his Lunch meal, after which he is going to takes his Daily soccer practice match in the next 30 min, how will glycolysis operate/work in such conditions or be applicable b. How will oxidative phosphorylation work in sickly John who usually practice daily in soccer? Make possible scenarios c. Enzymes are critical in the metabolism of most most organic compounds, actually 30% of reactions are catalysed by them. How would the inactive enzymes (Sickness) in electron Transport Chain compromise the fat breakdown in the body.
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Question 1: In some microorganisms, carbon fixation occurs by reversal of the citric acid cycle. This reversal is accomplished in part by the use of a strong reductant (ferredoxin) to drive the alpha-ketoglutarate dehydrogenase reaction in the reductive direction. Part a: ΔG°‘ for reaction as it occurs in the ‘normal’ (oxidative) citric acid cycle is -30.1 kJ/mol. The standard reduction potential for NADH is -0.32 V. In order to drive the reaction in the reverse direction, the reductant (a ferredoxin) must have a lower reduction potential than NADH/NAD+. Remembering that this is a two-electron reduction, and using the numbers given just above, compute the value of the ferredoxin reduction potential that would be needed to make the standard free energy zero (so that the reductive reaction is enegetically just as favorable as the oxidative reaction). Assume that all of the other reactants are the same in the reductive as in the oxidative reaction. Write out the steps in your calculation;…
Question 1: The overall process enabled by the glyoxylate cycle is: (2acetyl-CoA) + (NAD+) + (2H2O) → (succinate) + (2CoA) + (NADH) + (2H+) Dissect this process further by writing down all of the reactions that are actually involved in making one succinate from two acetyl-CoA units. Show chemical structure for all intermediates.
Question 29 options: If 6 molecules of acetyl CoA were completely oxidized by the CAC, how many molecules of FADH2 would be produced?
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