Metabolism is the sum total of all chemical reactions occurring in our body. Explain.

(N/A) $\Rightarrow$ Metabolism is a defining feature of all living organisms. All living organisms are made of chemicals,which are constantly being made and changed into some other biomolecules. These conversions are chemical or metabolic reactions.
$\Rightarrow$ All plants,animals,fungi,and microbes exhibit metabolism.
$\Rightarrow$ Metabolism is the sum total of all chemical reactions occurring in our body.
$\Rightarrow$ Cellular organization of the body is the defining feature of life forms.