16. The pyridine nucleotide pool (NADH, NAD) of metabolites is a major regulator of cellular metabolism. Entire anabolic pathways are A. inhibited by high cellular concentrations of NADH B. activated by high cellular concentrations of the total pyridine nucleotide pool of NAD and NADH C. inhibited by high cellular concentrations of the total pyridine nucleotide pool of NAD and NADH D. inhibited by high cellular concentrations NAD

16. The pyridine nucleotide pool (NADH, NAD) of metabolites is a major regulator of cellular metabolism. Entire anabolic pathways are A. inhibited by high cellular concentrations of NADH B. activated by high cellular concentrations of the total pyridine nucleotide pool of NAD and NADH C. inhibited by high cellular concentrations of the total pyridine nucleotide pool of NAD and NADH D. inhibited by high cellular concentrations NAD

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter7: Cellular Respiration: Harvesting Chemical Energy

Section: Chapter Questions

Problem 7TYK

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Similar questions

1) How is the TCA cycle regulated? a) Draw the TCA diagram that fills in all possible regulation points.
The effect of high levels of ADP is to__inv __ cellular respiration. increase the activity of specific enzymes decrease the activity of specific enzymes have no effect on the activity of specific enzymes slow down the pathway
The Krebs cycle converts ________ through a cycle of reactions. In the process, ATP, ________, and ________ are produced. acetyl CoA; FAD, NAD acetyl CoA; FADH2; NADH pyruvate; NAD; FADH2 pyruvate; oxygen; oxaloacetate
2. Which of the following statements is TRUE about phosphofructokinase-1? Select one: a. It is stimulated by AMP and ADP. b. It is inhibited by AMP and ADP. c. It is stimulated by citrate and ADP. d. It is stimulated by citrate and ATP.
Oxidative decarboxylations— involve loss of CO2 and the production of NADH. do not occur in the TCA cycle. involve loss of CO2 and the production of NAD. occur three times in the TCA cycle. involve loss of CO2 and the production of FADH2.
4. Hexokinase is kinase that catalyzes the phosphorylation of glucose by ATP to glucose-6-P, which can bind toits active site, blocking the access to ATP. Which of the following statements is/are correct regarding the typeof regulation?a) Phosphorylationb) Dephosphorylation.c) Feedback inhibition.d) Repression Explain each of the following option
12. Which of the following statement about coenzymes is not correct? The adenosine monophosphate component of NAD+ does not participate in the redox reaction. Ubiquinones such as coenzyme Q can be reduced in two steps involving one electron each. The flavins can transfer or take up electrons in single-electron steps but they are not able to undergo two-electron reductions. The oxidation of glucose is coupled to the generation of both NADH and FADH2. The 2’ hydroxyl group of the AMP portion of NAD+/NADH can be phosphorylated to become NADP+/NADPH.
5. Which of the following enzymes does not take part in the TCA cycle?    Fumarase.  Succinyl-CoA synthetase.   Aconitase.  Malate dehydrogenase.   Phosphoglycerate mutase.
The TCA cycle produces Multiple Choice ATP, FAD, and precursor metabolites NADH, ATP, and FAD. FADH2, NADH, and precursor metabolites. FADH2, ADP, and NADH. precursor metabolites, NAD, and FADH2.
1 A 23-year-old man developed blurring of central vision in his left eye which later diagnosed as Leber’s Hereditary Optic Neuropathy. It is a genetic disease characterized by a mutation in mitochondrial DNA that produces a low activity of Complex I. It lowers the amount of energy available to the cells of the optic nerve and retina. These cells are damaged and even die because of lack of energy. 2a) List out the enzyme of citric acid cycle that is affected by this diseases.
1. Label each statement about citric acid cycle as true or false. a. The citric acid cycle is a cyclic metabolic pathway that involves eight steps. b. Four molecules of NADH and one molecule of FADH2 are formed in the cycle. c. The cycle is activated when the amount of available ATP is low and energy demands are high. d. The cycle is inhibited when the concentration of NADH is low.
5. Which of the following statements is/are correct regarding allosteric regulation?a) Allosteric effector controls the activity of an enzyme by irreversible binding.b) Allosteric effector binds to the regulatory sitec) Allosteric activator causes changes in the catalytic site enhancing the substrate binding.d) Allosteric inhibitor causes changes in the catalytic site decreasing the substrate binding. explain each option