Answer:
What is an obligate anaerobe?: An organism, such as a bacterium, that can live only in the absence of oxygen.
How do obligate anaerobe like Bacteria C get energy?: Obligate anaerobes metabolise energy by anaerobic respiration or fermentation. In aerobic respiration, the pyruvate generated from glycolysis is converted to acetyl-CoA. This is then broken down via the TCA cycle and electron transport chain.
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