In a lab experiment, you determine that an unknown substance is a solid at room temperature, has a high melting point, and dissolves easily in water. which of the following is a reasonable hypothesis based on your observations? a. the substance is an acid b. the substance is an ionic compound c. the substance is a covalent compound d. the substance is a nonmetallic compound

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.