1. Put a check mark (V) on top of the zeros that are significant and an “X” below the zeros that are not significant.

25.050 g

12,500 mi

0.00250 kg

1.0250 L

5,000, 500 s

1.302 x 1015 atoms

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

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.