The transformation of metabolites into one another occurs through a series of linked reactions. This is called $...........$.

Anabolism is a $..........$ process,while catabolism is a $...........$ process.

The process of breaking down large molecules into smaller molecules in a cell is called $.........$.

Which statement is consistent with the process of anabolism?

Metabolism is defined as:

Assertion $A$: Energy transformations occur during metabolism in living organisms.
Reason $R$: Living organisms have to perform various biological functions.
Which option is correct for Assertion $A$ and Reason $R$?