Which of the following is the combination of substances that is initially added to the chain? Answer: D Topic: Concept 9.4 Skill: Application/Analysis 69) Which of the following most accurately describes what is happening along this chain? A) Chemiosmosis is coupled with electron transfer. B) Each electron carrier alternates between being reduced and being oxidized. C) ATP is generated at each step. D) Energy of the electrons increases at each step. E) Molecules in the chain give up some of their potential energy. Answer: B Topic: Concept 9.4 Skill: Application/Analysis 70) The parts of the figure labeled with Roman numerals symbolize what concept? A) different inner mitochondrial membranes B) different mitochondria functioning together C) molecules with different attached metal ions D) carbohydrate framework holding the molecules in place E) multimeric groups of proteins in 4 complexes Answer: E Topic: Concept 9.4 Skill: Application/Analysis 71) What happens at the end of the