cell are the building material of an organism.
this process takes place systematically.
first of all protein molecules starts forming a cell with further gets a huge number.
then these cells combines to form a tissue.
these tissues are known as the building structure of an organ.
the tissues then combines together to make a organ.
and the network of organs forms the system.
hope it helps you mate thanks for the question and if possible please mark it as brainliest