The electron microscope was discovered by
Robert Brown
Jansen
Robert Hooke
Knoll and Ruska
In 1931, Ernst Ruska and Max Knoll constructed the first prototype electron microscope.
This prototype had magnification power of 400.
Question 28 Living cells were discovered by (a) Robert Hooke (b) Purkinje (c) Leeuwenhoek (d) Robert Brown