Metabolism is a defining feature of all living organisms without exception. Isolated metabolic reactions in vitro are not living things but surely living reactions. Comment.

(N/A) $\rightarrow$ The total sum of all chemical reactions occurring in a living cell or organism is called metabolism. It involves the formation of various molecules and the breakdown of many others. All organisms,such as protozoans,algae,fungi,and bacteria,exhibit metabolism.
$\rightarrow$ Metabolic reactions can be demonstrated outside the body in cell-free systems,which are neither living nor non-living. Isolated metabolic reactions in vitro are,therefore,not living things but are surely living reactions. All biological reactions are highly specific,selective,and enzyme-catalyzed.