Question

Which statement best describes the role of carbon dioxide in cellular respiration?

A.
Carbon dioxide is required for the electron transport chain to produce ATP.

B.
Carbon dioxide is formed in the Krebs cycle as the bonds of carbons are broken.

C.
Carbon dioxide is broken down into a pair of 3-carbon molecules during glycolysis.

D.
Carbon dioxide is formed as oxygen accepts electrons and picks up hydrogen protons.
GPT-4o mini
The best statement that describes the role of carbon dioxide in cellular respiration is:

**B. Carbon dioxide is formed in the Krebs cycle as the bonds of carbons are broken.**

In cellular respiration, particularly during the Krebs cycle (also known as the citric acid cycle), carbon dioxide is produced as a byproduct when carbon-containing compounds are oxidized and their carbon bonds are broken down.

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