In living organisms, the formation and breakdown of substances occur through chemical reactions. These chemical reactions are collectively known as:

Assertion : Smaller the organism,higher is the rate of metabolism per gram weight.
Reason : The heart rate of a six-month-old baby is much higher than that of an old person.

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

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

What types of changes are $P$ and $Q$?
$P -$ Transformation in the shape of a compound without breaking bonds.
$Q -$ Transformation where bonds are broken or new bonds are formed.
$P$ and $Q$ are respectively:

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