Which of these is true about the scientific method?
a. conclusions are made at the beginning of the scientific method
b. questions need to be stated at the beginning of the scientific method
c. it is not important to form a hypothesis
d. data can only be analyzed using pounds, feet, and inches

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.