1.2 - A - Prokaryotes
Prokaryotes are cells with simple structures and that do not show internal compartmentalization. They were the original life forms on Earth and evolved into the diversity of life that we see today. They are the smallest organisms.
Because prokaryotes are so small, it is difficult to visualize them using traditional light microscopes. Instead, electron microscopes can be used to observe and study their structures.
Electron microscopes visualize samples by scanning them with beams of electrons. As a result, they have a much higher resolution and can produce more meaningful images like those seen to the left. With the technology, the prokaryotic structures listed below can be studied.