Which of the following are considered predominantly catabolic metabolicpathways? (Choose all correct answers).Fatty acid biosynthesisGluconeogenesisFatty acid oxidationElectron transport coupled to oxidative phosphorylationGlycolysisCitric Acid Cycle (TCA) Which of the following pathways take place in the mitochondrial inner membrane ofeukaryotic cells? Choose all correct answers.Tricarboxylic acid cycleElectron transportFatty acid oxidationOxidative phosphorylationGlycolysis

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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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Identify the stage of catabolism where the following processes occur: a. Hydrolysis of triacylglycerol with lipaseb. Oxidation of fatty acid to acetyl CoAc. Conversion of ADP to ATP with ATP synthased. Reaction of oxygen with protons and electrons to form watere. Cleavage of a protein with chymotrypsin
Which of the following statements about glucose metabolism is correct? * Red blood cells can catalyse aerobic glycolysis because they contain oxygen bound to haemoglobin. Fructose cannot be used for gluconeogenesis in the liver. Glycolysis can proceed in the absence of oxygen only if pyruvate is formed from lactate in muscle. All of the reactions of glycolysis are freely reversible for gluconeogenesis. Red blood cells can only metabolise glucose by anaerobic glycolysis and the pentose phosphate pathway.
After glycolysis, the steps of aerobic respiration proceed from to to acetyl-CoA formation the citric acid cycle electron transfer phosphorylation
Draw the integrated metabolic pathway during fed state. You must include three metabolic pathways that occur during a fed state: Glycolysis TCA cycle Triglyceride synthesis The three pathways must be linked. Add the following vitamins to the integrated pathways Vitamin B1: use at least 2 times Vitamin B2: use at least 2 times Vitamin B3: use at least 4 times Vitamin B5: use at least 2 times
A 16-year-old female is recently diagnosed with a deficiency of muscle glycogen phosphorylase. She and her family are concerned and ask the following questions. Based on what you know about skeletal muscle glycogenolysis and muscle metabolism, please respond to each question with a thoughtful answer that describes the metabolism in these various scenarios in language that your patient will understand, while also being sure to include the role of the relevant metabolic pathways, specific enzymes, and stimulus for their activity: I’m not sure I understand the issue. Can you explain how muscle glycogen is used normally during exercise? I really like to take long walks; will Istill be able to do this with my friends? As a result of this deficiency, will I need to get up at night to eat to maintain my blood glucose levels? Do I need to worry about producing excessive lactate during intense anaerobic exercise?
Which of the following metabolic pathways does NOT takes place in muscle cells? Tricarboxylic acid cycle Glycogenesis Glycogenolysis Conversion of ketone bodies to acetyl CoA Pentose phosphate pathway
Concerning glycolysis: * All of the above Hexokinase is important in hepatic glucose metabolism only in the absorptive period following consumption of a carbohydrate- containing meal. The regulated reactions are also the irreversible reactions. Fructose 2,6-bisphosphate is a potent inhibitor of phosphofructokinase. The conversion of glucose to lactate occurs in the absence of oxygen. The conversion of glucose to lactate yields two ATP and two NADH.
choose the metabolic pathway being described in the statement choices: Digestion Glycolysis Formation of Acetyl CoA Krebs Cycle ETC Reactions Glycogenesis Glycogenolysis Gluconeogenesis produced reduced coenzymes enter another aerobic cellular respiration biochemical hub of cells of all primary metabolites catalyzed primarily by glycogen synthase release of first CO2 in cellular respiration breaking of glycosidic linkages of glycogen absorption of glucose in the blood stream hydrolysis of dissacharide series of release of small amount of energy reducing oxygen to water requires pumping of hydrogen ions catalyzed initially by glycogen phosphorylase
During glycolysis, the major energy generating step involves: pyruvate kinase phosphoglycerate kinase Phosphofructokinase glyceraldehyde-3 -dehydrogenase
choose the metabolic pathway being described in the statement choices: Digestion Glycolysis Formation of Acetyl CoA Krebs Cycle ETC Reactions Glycogenesis Glycogenolysis Gluconeogenesis conversion of glyceradehyde-3-PO4 to glucose2. liberates more ATP from reduced coenzymes 3. occurs when the body runs out of carbohydrates 4. pyruvic acid is decarboxylated and oxidized 5. generates two molecules of pyruvate for every glucose catabolized 6. second release of CO2 in cellular respiration 7. catabolism of dietary carbohydrates 8. response to a drop in blood glucose9. catalyzed by pyruvate dehydrogenase 10. actic acid is converted to glucose
During anaerobic conditions, lactate travels from the muscle to the liver via the bloodstream. What is lactate converted into when it reaches the liver before it returns back to the muscle? Glucagon Citrate Acetyl CoA Glycogen Glucose
Regarding pathways that feed glycolysis, which of the following statements is false? Mannose is also a substrate of hexokinase. Galactose requires UDP-glucose in its conversion to fructose-6-phosphate. Fructose is phosphorylated by hexokinase in muscle cells. Glucose-6-phosphatase is part of the pathway that breaks down glycogen in muscle cells.

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Which of the following are considered predominantly catabolic metabolic pathways? (Choose all correct answers). Fatty acid biosynthesis Gluconeogenesis Fatty acid oxidation Electron transport coupled to oxidative phosphorylation Glycolysis Citric Acid Cycle (TCA)