An organism that must obtain its oxygen from oxygen containing compounds is an aerobe.

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Multiple Choice

An organism that must obtain its oxygen from oxygen containing compounds is an aerobe.

Oxygen requirement drives the definition of an aerobe: these organisms must have oxygen to grow and to perform aerobic respiration, where oxygen serves as the final electron acceptor in the chain. Because they rely on environmental oxygen, they obtain it from oxygen-containing compounds present in the surroundings, rather than producing oxygen themselves. Hence, the statement is true. To connect the contrast, organisms that do not require oxygen or only tolerate its presence—such as those that do not use oxygen for metabolism or only need it in small amounts—do not fit the description. This helps reinforce why the statement matches what an aerobe is.

Oxygen requirement drives the definition of an aerobe: these organisms must have oxygen to grow and to perform aerobic respiration, where oxygen serves as the final electron acceptor in the chain. Because they rely on environmental oxygen, they obtain it from oxygen-containing compounds present in the surroundings, rather than producing oxygen themselves. Hence, the statement is true.

To connect the contrast, organisms that do not require oxygen or only tolerate its presence—such as those that do not use oxygen for metabolism or only need it in small amounts—do not fit the description. This helps reinforce why the statement matches what an aerobe is.

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