Explain how the temperature of a substance is related to the kinetic energy of its molecules. every substance is composed of molecules that have kinetic energy. temperature is a measure of the average kinetic energy of molecules in the substance. temperature is measured in units of degrees. as the kinetic energy of molecules increases, temperature also increases, and vice versa.

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.