what type of respiration occurs when oxygen is in short supply?

Anaerobic respiration occurs when oxygen is in short supply.

Quick Scoop

When cells cannot get enough oxygen, they switch from aerobic (with oxygen) to anaerobic respiration to keep producing a small amount of energy.

In humans, this often happens in muscle cells during very intense exercise, leading to the production of lactic acid and that familiar burning or cramping feeling.

Because glucose is only partially broken down in anaerobic respiration, it releases much less energy than normal aerobic respiration but works faster in emergencies.

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