Which of the following processes in a cell is the result of various chemical reactions?

Statement $X$: All the various biochemical reactions occurring in every cell of a living organism are collectively called 'metabolism'.
Statement $Y$: Growth occurs when the rate of anabolic processes is greater than the rate of catabolic processes.

Metabolism is the sum total of all chemical reactions occurring in our body. Explain.

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

The total heat content of a system is known as:

The ionization of a sodium atom to produce $Na^+$ is an example of: