Which of these statements are true? check all that apply.
a. elements that produce radiation for a long time have a slow decay rate.
b. half of the time until a substance is completely gone is the half-life.
c. elements with a quick rate of decay will only emit radiation for a short time.
d. the half-life of every element is the same.

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.