|Prokaryote means "before nucleus"
today includes: blue green algae & bacteria
primitive, simple, versatile, common unicellular
most successful life form- 80% to 90% of total biomass of planet
2,500 different species known
lack membrane bound organelles
genes without protein = "naked DNA" - no "chromosomes"
little to no internal compartmentation
size range - 0.1 to 10 µm diameter
Spherical prokaryotes that ocur singly (cocci), or in pairs (diplococci), or
in chains as shown here, and in clusters resembling grapes (staphlococci).
Rod-shaped, spore-forming, bacteria (genus Bacillus) often forming chains
and including B. anthracis, the causative agent of anthrax.