Can life exist if cellular respiration stops?
No. Cellular respiration is essential for life. It occurs continuously throughout life.
Adenosine triphosphate (ATP) produced by cellular respiration must occur constantly. This is because ATP provides energy for cells to carry out their functions. Aerobic cellular respiration uses oxygen as the last electron acceptor of the electron transport chain. When a person dies from suffocation, the reason for death is the lack of oxygen to accept the electrons. This causes the transport chain to stop, which causes the production of ATP to stop, and cells cannot carry out their functions and they die.