Question

which was the first \cell\ viewed by the light microscope?

microbe

atom

dna

oak bark

Explanation:

In 1665, Robert Hooke used a light microscope to observe a thin slice of cork (oak bark). He named the small compartments he saw as "cells". Microbes were observed later. Atoms are too small to be seen by a light microscope. DNA structure was studied with more advanced techniques much later.

Answer:

oak bark