MLT UNIT 7 MICROBIOLOGY QUESTIONS WITH
100% CORRECT ANSWERS [ GRADED A+]
Bacteroides - ✔✔GN coccobacilli or straight bacilli (anaerobic),
encapsulated, growth enhanced by bile, (R) to PCN, normal flora of
colon, common in oral infection
Fusobacterium - ✔✔GN pleomorphic bacilli (anaerobic), (R) to
vancomycin, tapered ends
Clostridium - ✔✔GP bacilli, swollen spores, tennis racquet, spindle
shape (anaerobic),
Peptostreptococcus - ✔✔GP cocci - 30% of anaerobes isolated from
infections(anaerobic)
Veilonella - ✔✔GN cocci - (anaerobic), may flouresce red under long UV
, Proprionibacterium - ✔✔GP bacilli chinese letters, birds of flight
(anaerobic), frequently contaminate blood cultures
Enterobactereciae - ✔✔GNR, non-spore formers, oxidase negative,
ferment glucose, produce gas, reduce nitrites
Enterobactereciae genus - ✔✔Proteus, Providencia, Morganella,
Edwardsiella, Salmonella, Citrobacter, Escheria, Yersinia, Shigella,
Hafnia, Enterobacter, Serratia, Klebsiella
Micrococcaceae - ✔✔GPC Catalase +
Staphylococcus - ✔✔GPC Catalase +, microdase (=)
Streptoccoccus - ✔✔GPC, Catalase (=)
S. pyogenes - ✔✔GPC, beta-strep, +PYR, (S) A-disk, scarlet fever,
necrotizing fasciitis
S. agalactiae - ✔✔GPC, beta/gamma-strep, +CAMP, neonatal meningitis
100% CORRECT ANSWERS [ GRADED A+]
Bacteroides - ✔✔GN coccobacilli or straight bacilli (anaerobic),
encapsulated, growth enhanced by bile, (R) to PCN, normal flora of
colon, common in oral infection
Fusobacterium - ✔✔GN pleomorphic bacilli (anaerobic), (R) to
vancomycin, tapered ends
Clostridium - ✔✔GP bacilli, swollen spores, tennis racquet, spindle
shape (anaerobic),
Peptostreptococcus - ✔✔GP cocci - 30% of anaerobes isolated from
infections(anaerobic)
Veilonella - ✔✔GN cocci - (anaerobic), may flouresce red under long UV
, Proprionibacterium - ✔✔GP bacilli chinese letters, birds of flight
(anaerobic), frequently contaminate blood cultures
Enterobactereciae - ✔✔GNR, non-spore formers, oxidase negative,
ferment glucose, produce gas, reduce nitrites
Enterobactereciae genus - ✔✔Proteus, Providencia, Morganella,
Edwardsiella, Salmonella, Citrobacter, Escheria, Yersinia, Shigella,
Hafnia, Enterobacter, Serratia, Klebsiella
Micrococcaceae - ✔✔GPC Catalase +
Staphylococcus - ✔✔GPC Catalase +, microdase (=)
Streptoccoccus - ✔✔GPC, Catalase (=)
S. pyogenes - ✔✔GPC, beta-strep, +PYR, (S) A-disk, scarlet fever,
necrotizing fasciitis
S. agalactiae - ✔✔GPC, beta/gamma-strep, +CAMP, neonatal meningitis
