Nature

Obligate Intracellular
(grows inside the cells only)
e.g.Q-fever

Facultative Bacteria
e.g. E.coli

Cell -Walls

Squiggly

Stain

Gram Positive
e.g. Streptococcus

Gram Negative
e.g. E.coli

Acid-Fast
e.g. Mycobacteria

Cocci

Cocci

Biochemical Reactions

How Bacteria can be Identified ? A simple step by step scheme