The study of which structure was instrumental in the formulation of the modern cell theory?

Question

plant cell
animal cell
cell membrane
DNA molecule

Answer 1

The study of the plant cell was instrumental in the formulation of the modern cell theory.

Answer 2

Through which microscope were cells first observed?
simple microscope
tunneling microscope
compound light microscope
electron microscope

Answer 3

Cells were first observed through a compound light microscope.