Bacteria (gram status, shape, aerobe status, special features)

Question 1

Staphlococcus aureus

Answer 1

(+), cocci/spherical, facultative anaerobe, entertoxins, toxic shock syndrome toxin, very antibiotic resistant

Question 2

Listeria monocytogenes (listerosis)

Answer 2

(+), rod, facultative anaerobe, intracellular parasite, common cause of meningitis and septicemia

Question 3

Vibrio cholera (cholera)

Answer 3

(-), curved rod, facultative anaerobe, enterotoxin (“cholera toxin”)

Question 4

Yersinia pestis (bubonic plague)

Answer 4

(-), rod, facultative anaerobe, encapsulated (important!), very resistant to phagocytosis, live in lymph nodes

Question 5

Treponema pallidum (syphilis)

Answer 5

(-), rod (spirochete), microaerophilic, highly motile, cant survive outside of host

Question 6

Rickettsia rickettsii (rocky mountain spotted fever)

Answer 6

(-), rod or cocci, aerobic, obligate intracellular parasite

Question 7

Streptococcus pneumonia

Answer 7

(+), cocci, aerotolerant anaerobe (grow fermentatively even in presence of O2), encapsulated (important!)

Question 8

Escherichia coli

Answer 8

(-), rod, facultative anaerobe

Question 9

Neisseria gonorrhoeae

Answer 9

(-), cocci (coffee bean shaped, in pairs), aerobic, highly sensitive to dehydration, proteins facilitate adhesion for GI/GU

Question 10

Clostridium botulinum

Answer 10

(+), rod, obligate anaerobe, spore forming (important virulence factor), exotoxin (very very potent)

Question 11

Mycobacterium tuberculosis

Answer 11

acid fast (dont gram stain well), rods, highly aerobic, strongly hydrophobic, resistant to chemical disinfectants