Match the regulatory molecule to the pathway that is regulated by that molecule inthe liver. Answers may be used more than once, while some may not be used not atall.Glycolysis[Choose ][Choose ]Malonyl-CoACitric Acid CycleNADHCitrateFructose-2,6-BisphosphateEpinephrineFatty Acid Synthesis[Choose ]Fatty Acid Degradation/BetaOxidation[ Choose ]Gluconeogenesis[ Choose ]>

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Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Similar questions

Deficiencies in the conversion of Pyruvate to Acetyl CoA may result in severe neurological developmental defects in children. A child presents with these symptoms. Tests reveal that this child has abnormally high levels of Pyruvate in mitochondria and low levels of Hydroxyethyl TPP. What is your diagnosis on the specific enzyme deficiency in this child that may be causing the symptoms Explain in 3 – 5 sentences
Which of the following is NOT a regulatory mechanism for catabolism and anabolism? Phosphorylation of enzymes in glycogenesis and glycogenolysis Modulation of enzymes in glycolysis and the aerobic stage of cellular respiration by intermediates and products of the pathway Conversion of pyruvate to alanine Differences in enzymatic activities in response to variations in the concentration of substrates Activation of gluconeogenesis
Acetyi CoA Oxaloncetate CoA NADH Citrate NAD Isocitrate Malate Funiarate NAD co NADH FADH, FAD a- Ketoghutarate Succinate co, NAD+ ATP Succinyl CuA NADH ADP - P For each molecule of glucose (C6H12O6) oxidized by cellular respiration, how many moles of CO2 are released in the citric acid cycle? (see the figure above) а. 2 b. 4 с. 6 d. 0 е. 3
Pyruvate can be converted to glucose via gluconeogenesis, or it can be oxidized to acetyl-CoA for energy production. The enzyme pyruvate carboxylase is regulated allosterically by which of the following? Oxaloacetate All of the above Acetyl COA Glucose-6-phosphate Fructose-6-phosphate
Which of the following intermediates serve as the brain’s primary source of energy during prolonged starvation? Group of answer choices acetyl CoA pyruvate fatty acyl CoA glucose acetoacetate
What four allosteric enzymes or enzyme complexes are responsible for the regulation of the citric acid cycle? Select all that apply. Malate dehydrogenase Fumarase Succinyl CoA synthetase Aconitase a-ketogluatarate dehydrogenase Succinate dehydrogenase Pyruvate dehydrogenase Citrate synthase Isocitrate dehydrogenase
Below is an image showing how cellular respiration is regulated. Imagine someone ingested a toxin that prevents pyruvate from entering the mitochondria. Which of the following statements is true? Inhibits ATP Glucose GLYCOLYSIS Copyright 2018 Pearson Canada Inc. Fructose 6-phosphate Phosphofructokinase Fructose 1,6-bisphosphate Pyruvate Acetyl COA CITRIC ACID CYCLE Oxidative phosphorylation AMP I Stimulates Inhibits Citrate The amount of citrate in the cell would decrease, leading to a decrease in the activity of phosphofructokinse. The amount of citrate in the cell would increase, leading to a decrease in the activity of phosphofructokinse. The amount of citrate in the cell would decrease, leading to an increase in the activity of phosphofructokinse. The amount of citrate in the cell would increase, leading to an increase in the activity of phosphofructokinse.
Once formed, what are the three possible fates of pyruvate and under what conditions do they occur? Match the appropriate pairs. Clear All pyruvate forms lactate pyruvate forms ethanol pyruvate forms acetyl-CoA under anaerobic conditions in animals under aerobic conditions under anaerobic conditions in yeast and other microorganisms
Activation of the fatty acid (converting it to fatty acyl-SCoA) requires the expenditure of 2 ATPs. Use your answers from parts B and C to calculate the total number of ATPs generated from the metabolism of a saturated fatty acid with 18 carbon atoms including both the citric acid cycle and the ββbeta-oxidation pathway as well as the initial ATP required to produce the acyl-SCoA molecule that starts the process. Express your answer as an integer.

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