Write one unit for each type of measurement below mass density volume length hun 2. (5pts) solve the following unit conversions: a. 300 l = ml b. 778 mg g d. 0.407 km= cm e. 2.3 g/ml"/l 3. (5pts) label the following as pure substance or mixture a. milk b. di water xfert c. diamond d. chocolate pe e. dry ice 4. (5pts) label the following as element or compound: a. sugar b. copper cleme c. salt d. liquid nitrogen co poune e. propanecoupeu clcomen total: 8,10

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.

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action

How does carbon monoxide pose the greatest threat to humans? a. it can be produced by wood fires. b. it can be produced by home furnaces. c. it is produced by acid rain. d. it is produced by modern automobiles.