Choose the correct statement(s) for the following reaction: 8fe(s) + s8 (s) → 8 fes (s) (a) iron is being oxidized. (b) iron is being reduced. (c) sulfur is being oxidized. (d) sulfur is being reduced

Effect of rotenone and antimycin a on electron transfer rotenone, a toxic natural product from plants, strongly inhibits nadh dehydrogenase of insect and fish mitochondria. antimycin a, a toxic antibiotic, strongly inhibits the oxidation of ubiquinol. (a) explain why rotenone ingestion is lethal to some insect and fish species. (b) explain why antimycin a is a poison. (c) given that rotenone and antimycin a are equally effective in blocking their respective sites in the electron-transfer chain, which would be a more potent poison? explain.