Question

the second stage of cellular respiration is the citric cycle, which happens in the mitochondria. during the citric acid cycle, pyruvate is converted into carbon , which is released as waste. the last stage of cellular respiration, the transport chain, produces the most atp. is the final electron acceptor in the electron transport chain.

Explanation:

Cellular respiration has three main stages. The citric - acid cycle occurs in mitochondria. Pyruvate is broken down to carbon dioxide in the citric - acid cycle. The electron - transport chain is the last stage and oxygen is the final electron acceptor.

Answer:

1. Citric - acid
2. dioxide
3. electron
4. Oxygen