Question

Why do cells need oxygen?

Answer 1

Cells need oxygen because:

1. Cells need oxygen for the efficient use of glucose in cellular respiration.
2. Most organisms use this method to obtain energy.
3. Oxygen binds to parts of glucose molecules, which release water, carbon dioxide, and energy.
4. After all, this is done, the organism uses the energy to produce adenosine triphosphate (ATP).