Why does matter appear to be conserved in chemical reactions but not in nuclear
reactions?
-the law of conservation of matter only applies to a limited number of chemical
and nuclear reactions.

-the law of conservation of mass-energy applies only to nuclear reactions

-in nuclear reactions, particles move too quickly to have their masses measured.

-in nuclear reactions, the changes in mass are large enough to be detected.

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.