Portage Learning Chem 210 - Module 7 exam

Question 1 3 / 3 pts True or False: The ΔG value for a particular reaction is -78kJ/mol. This value indicates the reaction is NOT spontaneous. FALSE Question 2 3 / 3 pts True or false: A biochemical metabolic pathway is a single reaction that converts starting material into products. FALSE Question 3 3 / 3 pts True or false: Three ATP molecules are used in the energy-investing stage of glycolysis. FALSE Question 4 3 / 3 pts True or False: The citric acid cycle occurs in the absence of oxygen. FALSE Question 5 0 / 3 pts True or false: The β-oxidation pathway degrades both even-numbered and oddnumbered fatty acids. TRUE 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 Question 7 3 / 3 pts 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 Question 8 3 / 3 pts What is the primary reactant of glycolysis? Correct! Glucose Glucose-6-phosphate Fructose Fructose-6-phosphate Hexokinase 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 Question 10 3 / 3 pts 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