PORTAGE LEARNING CHEM 210 - MODULE 7 EXAM

PORTAGE LEARNING CHEM 210 - MODULE 7 EXAM. True or False: The ΔG value for a particular reaction is -78kJ/mol. This value indicates the reaction is NOT spontaneous. FALSE True or false: A biochemical metabolic pathway is a single reaction that converts starting material into products. FALSE True or false: Three ATP molecules are used in the energy-investing stage of glycolysis. FALSE True or False: The citric acid cycle occurs in the absence of oxygen. FALSE True or false: The β-oxidation pathway degrades both even-numbered and oddnumbered fatty acids. TRUE Question 1 3 / 3 pts Question 4 3 / 3 pts Question 5 0 / 3 pts Question 2 3 / 3 pts Question 3 3 / 3 pts Question 6 3 / 3 pts In converting glucose to pyruvate, how many ATP or NADH are produced (or required) in the 1,3-bisphosphoglycerate to 3-phosphoglycerate step in glycolysis? 2 ATP produced 1 ATP required 1 NADH produced 2 NADH and 1 ATP produced None of the above 2 ATP PRODUCED In converting glucose to pyruvate, how many ATP or NADH are produced (or required) in the phosphoenolpyruvate to pyruvate step in glycolysis? 1 ATP required 1 ATP produced 2 ATP produced 2 ATP required None of the above 2 ATP PRODUCED What is the primary reactant of glycolysis? Glucose Glucose-6-phosphate Fructose Fructose-6-phosphate Hexokinase Question 7 3 / 3 pts Question 8 3 / 3 pts GLUCOSE In glycolysis, when glucose enters a cell, it is immediately phosphorylated to form glucose-6-phosphate. The phosphate donor in this reaction is ATP, and the enzyme is . Hexokinase Aldolase CoA Phosphohexose isomerase None of the above HEXOKINASE In the last reaction of glycolysis, ATP is formed by the direct transfer of a phosphate group from a metabolite to ADP. This process is referred to as: Substrate-level phosphorylation Protein phosphorylation Lipid phosphorylation Isomerization Photo-protein dephosphorylation SUBSTRATE-LEVEL PHOSPHORLATION Question 10 3 / 3 pts Question 11 0 / 3 pts Under anaerobic conditions, to which compound is pyruvate converted? NADH Lactate Hexokinase GAP None of the above LACTATE How many steps are in the glycolysis pathway? 3 6 10 12 14 10 The reactions of glycolysis take place in/on the . Mitochondria Vacuoles Ribosome Cytosol None of the above CYTSOL How is ATP used in the initial steps of glycolysis? Question 12 3 / 3 pts Question 13 3 / 3 pts Question 14 3 / 3 pts Isomerization reaction Phosphorylation reaction Protein production Lipid phosphorylation None of the above PHOSPHORYLATION REACTION Which of the following is a cyclic pathway? A. CAC B. PDH C. Glycolysis D. Oxidative phosphorylation E. β-oxidation A.CAC How many ATP molecules does NADH yield after oxidative phosphorylation? 1.5 2 2.5 3 3.5 Question 16 3 / 3 pts Question 15 3 / 3 pts 2.5 Besides NADH and FADH2, what energy molecule is produced directly in the citric acid cycle? ATP GTP CTP TTP None of the above GTP What molecule is missing in the following reaction? A. Fumarate B. Malate Question 17 3 / 3 pts C. Succinate D. CO2 E. Succinyl-CoA C.SUCCINATE Pyruvate conversion to acetyl-CoA production occurs in the . Lysosomes Vacuoles Nucleus Mitochondria None of the above MITOCHONDRIA Cellular respiration is the process of cells taking in and producing to generate energy. A. Glucose; NADH B. FAD; FADH2 C. CO2; ATP Question 19 3 / 3 pts Question 20 3 / 3 pts D. NAD+; NADH E. O2; CO2 E.O2; CO2 How many phases are in the complete degradation of glucose via cellular respiration? 2 3 4 5 1 3 The PDH complex has three enzymes, which are referred to as: P, D, and H E1, E2, and E3 Enzyme A, Enzyme B, and Enzyme C Enzyme a, Enzyme b, and Enzyme c None of the above E1, E2, AND E3 Of the following, which coenzyme(s) is (are) necessary for β-oxidation? A. O2 B. FAD