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Figure 9.1 illustrates some of the steps (reactions) of glycolysis in their proper sequence. Each step is lettered. Use these letters to answer the questions. Figure 9.1 15) Which step shows a split of one molecule into two smaller molecules? Answer: B Topic: Concept 9.2 Skill: Application/Analysis 16) In which step is an inorganic phosphate added to the reactant? Answer: C Topic: Concept 9.2 Skill: Application/Analysis 17) In which reaction does an intermediate pathway become oxidized? Answer: C Topic: Concept 9.2 Skill: Application/Analysis 18) Which step involves an endergonic reaction? Answer: A Topic: Concept 9.2 Skill: Application/Analysis 19) Which step consists of a phosphorylation reaction in which ATP is the phosphate source? Topic: Concept 9.2 Skill: Application/Analysis 20) Substrate-level phosphorylation accounts for approximately what percentage of the ATP formed during glycolysis? A) 0% B) 2% C) 10% D) 38% E) 100% Answer: E Topic: Concept 9.2 Skill: Application/