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27 terms

Microbiology of common bacteria

USMLE, microbiology, medicine
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Staphylococcus
Gram positive cocci
Streptococcus
Gram positive cocci
Clostridium
Gram positive anaerobic rod
Listeria
Gram postive aerobic rod
Neisseria
Gram negative cocci
Treponema
Gram negative spirochete
Camplyobacter
Gram negative spiral
Helicobacter
Gram negative spiral
Legionella
Gram negative aerobic rod
Pseudomons
Gram negative aerobic rod
Enterobacter (eg Escherichia coli)
Gram negative facultative anaerobic rod
Haemophilus
Gram negative facultative anaerobic rod
Fusobacterium
Gram negative anaerobic rod
Mycobacterium
Poorly staining, acid fast
Chlamydia
Obligate intracellular
Mycoplasma
Poorly staining, no peptidoglycan in cell wall
Gram positive cocci
Staphylococcus, Streptococcus
Gram positive anaerobic rod
Clostridium
Gram postive aerobic rod
Listeria
Gram negative cocci
Neisseria
Gram negative spirochete
Treponema
Gram negative spiral
Camplyobacter, Helicobacter
Gram negative aerobic rod
Legionella, Pseudomonas
Gram negative facultative anaerobic rod
Enterobacter (eg Escherichia coli), Haemophilus
Gram negative anaerobic rod
Fusobacterium
Poorly staining, require special techniques
Chlamydia (PCR), Mycoplasma (PCR/serology), Mycobacterium (Ziehl-Nelson Staining/Acid-fast staining)
How do you tell the difference between staphylococcus and streptococcus?
Staphylococcus is catalase positive, Streptococcus is catalase negative.

Catalase=Converts H2O2 to H2O and O2