The term that refers to the production of energy by a cell without using oxygen is anaerobic respiration.

Here's a breakdown:

* Anaerobic: Means "without oxygen."

* Respiration: The process by which cells break down glucose to release energy.

In anaerobic respiration, cells use other electron acceptors besides oxygen to generate energy. This is common in certain bacteria and also happens in your muscles during intense exercise when oxygen supply is limited.

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