What is usually (but not always) related to the metabolic processes of living organisms in its organic form? In its organic form, (BLANK) is usually (not always) related with the metabolic processes of living organisms.

All organisms exhibit metabolism. e.g. protozoans, algae. fungi, bacteria. etc.

Metabolic reactions cannot happen in a cell-free system. While isolated in-vitro reactions carried out in laboratories cannot be termed as metabolism because they are conducted in a controlled environment and are simulated.

But such reactions can be termed as living reactions because they are the reactions going on inside a living system.