What causes pressure inside a bicycle tire?
a. the collisions of the air particles with the surface of the tire
b. the air particles pushing on the tire as they expand
c. the air particles vibrating near the surface of the tire
d. the collisions of the air particles with one another
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Iknow #2 is d. i just need to know why

What must happen before a body cell can begin mitotic cell division

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.