Copper(II) oxide reacts with carbon when heated. 2Cu + C → 2Cu + CO2
Which statement about this reaction is correct?

ACarbon is the oxidising agent.
B Carbon is the reducing agent.
C Copper(II) oxide is oxidised.
D Copper(II) oxide is the reducing agent.​

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.