The diagram shows a cart moving freely along a track. What happens to the energy of the cart as it moves from point A to point B on the diagram? A. Potential energy is transformed to kinetic energy.

B. Kinetic energy is transformed to potential energy.

C. Both potential energy and kinetic energy stay the same.

D. Potential energy decreases and kinetic energy stays 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.