HEL How is the oxygen from inhalation used on the cellular level?
It is used to help the cells breathe.
It is used to help cells get rid of wastes.
It is used by cells to make energy in cellular respiration.
It is used to replicate DNA in cells.

Your body cells use the oxygen you breathe to get energy from the food you eat. This process is called cellular respiration. During cellular respiration the cell uses oxygen to break down sugar. Breaking down sugar produces the energy your body needs.

Explanation:

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