Question

which substance is needed for aerobic cellular respiration to occur

Answer 1

Oxygen (O2)

Formula
Glucose + Oxygen -> Carbon dioxide + Water + ATP (energy)

The key word here is aerobic :)
Without oxygen anaerobic respiration will take place (less efficient in making energy)

Answer 2

Answer:

Oxygen (O2)

Formula

Glucose + Oxygen -> Carbon dioxide + Water + ATP (energy)

Explanation: