Answer :
The fundamental structural and operational unit of life is the cell. British scientist Robert Hooke introduced the word "cells" in 1665.
He was the first to investigate living things under a microscope and saw honeycomb-like structures when he looked at a thin slice of cork. Robert Hooke referred to these objects as cells. The stem cells were found by Matt Kauffman and Martin Evans. In 1981, they recognized, separated, and cultured embryonic stem cells from a mouse blastocyst. Later, a human blastocyst was used by James Thomson and his staff to separate embryonic stem cells. This aided scientists in creating an unlimited supply of the human body's structural components. Read more about the distinctions between plant and animal cells.
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