What is the energy available to do work in any system called?

In living organisms,complex traits are the result of:

What is the collective term for the various biochemical reactions occurring within the cells of a living organism?

Which metabolic processes are carried out by a cell?

The process of forming large molecules from small molecules with the help of enzymes in the body is $P$.
The process of forming small molecules from large molecules with the help of enzymes in the body is $Q$.
What are the processes $P$ and $Q$?
$P \quad\quad\quad\quad\quad Q$

Which process involves the breakdown of complex molecules into simpler molecules?