Bacteria requiring free oxygen for metabolism are called which term?

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Multiple Choice

Bacteria requiring free oxygen for metabolism are called which term?

Explanation:
Organisms that require oxygen for metabolism are called aerobic bacteria. They rely on oxygen as the final electron acceptor in their respiration to produce ATP efficiently. Without oxygen, many aerobes cannot sustain growth, whereas anaerobic bacteria operate without oxygen using fermentation or anaerobic respiration. Facultative bacteria can use oxygen when it’s present but can switch to other metabolic pathways without it. Pathogens describe disease-causing ability, which is not about oxygen use. So the term that matches the requirement for oxygen in metabolism is aerobic bacteria.

Organisms that require oxygen for metabolism are called aerobic bacteria. They rely on oxygen as the final electron acceptor in their respiration to produce ATP efficiently. Without oxygen, many aerobes cannot sustain growth, whereas anaerobic bacteria operate without oxygen using fermentation or anaerobic respiration. Facultative bacteria can use oxygen when it’s present but can switch to other metabolic pathways without it. Pathogens describe disease-causing ability, which is not about oxygen use. So the term that matches the requirement for oxygen in metabolism is aerobic bacteria.

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