1 A few types of cells are large enough to be seen by the unaided eye. The human egg (ovum) is the largest cell in the body, and can (just) be seen without the aid of a microscope. 2  Most cells are small for two main reasons:  The cellâs nucleus can only control a certain volume of active cytoplasm.
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 GeigerâMarsden gold foil experiment.
Who was the first scientist to discover the cell? Who was the Scientist who first described cells? The first scientist who described cells is the English scientist Robert Hooke. In 1665, he discovered the cell when he observed tiny boxes from a slice of cork, basically barkâ¦ and named them 'cells'. He then created the cell theory. Hope that helps.