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Essay 2: Toxins affecting aerobic respiration Many toxic chemicals kill living organisms by blocking one or more reactions in aerobic respiration. Choose one of the hypothetical toxins below and describe how the aerobic respiration pathway would be disrupted. Be sure to address each of the following points, and organize your answers into a cohesive paragraph: • Which stages aerobic respiration would be slowed down or stopped by the toxin? Exam 3 Essays • Which stages of aerobic respiration would be unaffected by the toxin? BIOL 1114 • What is the first product that would NOT be produced once the pathway is disrupted? • How many ATP molecules would be produced from one glucose molecule before the process stopped? Toxin choices (choose one): • Toxin A blocks the citric acid cycle by binding to part of a molecule needed for the formation of acetyl CoA. • Toxin B stops a redox reaction early in the electron transfer chain (ETC). • Toxin C blocks the final transfer of electrons to O₂. When proteins in the ETC have no place to "dump" their electrons, electron transfer stops (like a backed-up assembly line).