If cells synthesizing glucose from lactate are exposed to radioactive (14C-labeled) CO₂, which carbon(s) in the newly synthesized glucose will be labeled? Check all that apply. carbon 1 carbon 2 carbon 3 carbon 4 carbon 5 carbon 6 No part of glucose will be labeled
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- The cholesterol synthesized by cells uses which component of the glycolytic pathway as a starting point? a. glucose b. acetyl CoA c. pyruvate d. carbon dioxideWhy might bodybuilders take aromatase inhibitors? Your answer needs to demonstrate that you know what aromatase does.Draw the product that is obtained from the reaction of cholesterol with the H2O, H+
- A solution of glucose is 100% labeled with 13C at carbon 6, then is reacted upon with glycolytic enzymes. Which of the following correctly described the resuling glyceraldehyde-3-phosphate? a. 100% labeled at carbon 1 b. 100% labeled at carbon 3 c. 50% labeled at carbon 1. d. 50% labeled at carbon 3.How many ATPs would result from the reaction involving the alpha-ketoacid dehydrogenase complex alone if one mole of glucose was oxidized in the citric acid cycle? A. 10 B. 5.0 C. 2.5 D. 1.0 E. 0.5The heart cannot convert lactate back to glucose, as the liver does, but instead uses it as a fuel. What is the ATP yield from the complete catabolism of one mole of lactate?
- Which citric acid cycle intermediate can move from the mitochondria into the cytoplasm to become the activator of fatty acid synthesis? Select one: a. Succinyl-CoA b. Fumarate c. Citrate d. MalateThe oxidation of 1 mol of glucose supplies enough metabolic energy to form 36 mol of ATP. Oxidation of 1 mol of a typical dietary fat like tristearin (C57H116O6) yields enough energy toform 458 mol of ATP. How many molecules of ATP can form per gram of (a) glucose; (b) tristearin?Glyoxylate cycle allows the conversion of __ to __ in __ A. Glucose ;lipids ;plants B. Lipids; glucose ;plants c. Glucose ;lipids ; plants D. lipids; glucose ;animals
- Which of the following statements about folic acid is not true? a. Folic acid is activated by folate synthase. b. Folic acid structure contains a pteridine ring and para-amino benzoic acid. c. NADPH is required in the reactions activating folic acid. d. Tetrahydrofolate is the biologically active derivative of folic acid.Using the following diagram, a. name all the steps in citric acid cycle. (What are the intermediates) b. Is glycolysis endothermic or exothermic. ThanksWhich of the following is the preferred fuel source under anaerobic conditions? Group of answer choices amino acids glucose fatty acids lactate Which of the following tissues would be the BEST choice to study if you wanted to perform experiments studying how energy from food is extracted in the citric acid cycle? Group of answer choices liver red blood cells muscle containing lots of mitochondria a tumor Which of the following best describes CoA? Group of answer choices catalytic coenzyme glycolytic enzyme stoichiometric coenzyme building block of fatty acids
