Define/Explain the following terms:
$(1)$ Cellular respiration
$(2)$ Respiratory system

(N/A) $(1)$ Cellular respiration: It is a catabolic process in which energy is released through the oxidation of glucose,and $CO_2$ is produced as a byproduct.
$(2)$ Respiratory system: The structural organization comprising the transport route and organs where the exchange of $O_2$ and $CO_2$ occurs between the atmosphere and the blood is called the respiratory system.