Question

does cell and atom are related to each other?if yes why?if not why?

Answer 1

yes they are . as cells are itself made up by millions of atoms of different elements in a definite proportion . cells are capable of living on their own but atoms form molecules, etc. combine and for proteins which in turn form cells 

Answer 2

In chemistry the smallest constituent unit of  matter is known as an atom.

The cell is the basic structural, functional, and biological unit of all known living organisms.