Microbiology ASCP UPDATED ACTUAL
Exam Questions and CORRECT Answers
Cytochrome oxidase positive, DNAse negative, ornithine positive and is associated with
gastroenteritis in children is - CORRECT ANSWER - Plesiomonas shigelloides
Fusarium - CORRECT ANSWER - Likely to cause mycotic Keratitis
Saccharomyces cerevisae - CORRECT ANSWER - Bakers yeast
Presumptive test for ID of Lancefield group A strep is - CORRECT ANSWER - Bacitracin
susceptibility
Moraxella lacunata - CORRECT ANSWER - Conjungtivitis
Blue color on simmons citrate - CORRECT ANSWER - production of ammonia from
ammonium phosphate
If bacteria produces tryptophanase to break down the A.A. tryptophan, which is positive for
Kovacs reagent - CORRECT ANSWER - Indole test
Klebsiella oxytoca - CORRECT ANSWER - weak urease positive
Necator Americanus - CORRECT ANSWER -
Morganella morganii - CORRECT ANSWER - non lactose fermenter (not pink on
MacConkey
Class II or higher BSC - CORRECT ANSWER - must be used for bioterrorism agents
,alpha napthalamine - CORRECT ANSWER - Nitrate
VP - CORRECT ANSWER - alpha naphthol
Indole - CORRECT ANSWER - aminobenzaldehyde
Phenylalamine deaminase - CORRECT ANSWER - ferric chloride
Bacillus Anthracis - CORRECT ANSWER - Ulcerating pustule, asia, animal hides
Fonsecaea pedrosoi - CORRECT ANSWER - Chromoblastosis, H&E stained sections of
tissue biopsy, Sclerotic bodies, Copper pennies,
Group A strep - CORRECT ANSWER - Zone of inhibition around bacitracin disk
Serum medium and methylene blue stain originally described by Loeffler is helpful in -
CORRECT ANSWER - Corynebacterium diphtheriae
Mycobacterium Tuberculosis - CORRECT ANSWER - 2 weeks to grow, Rough looking
Mycobacterium Kansasii - CORRECT ANSWER - Develop pigment when exposed to
light (PHOTOCHROMIC)
Mycobacterium scrofulaceum - CORRECT ANSWER - Develop deep yellow (orange)
when incubated in the dark
Mycobacterium Fortuitum - CORRECT ANSWER - White or gray rapid growing 3 days
, Elkenella corrodens - CORRECT ANSWER - Pitting of the agar, bleach smell,
Clostridium pefringens - CORRECT ANSWER - Boxcar, gas gangrene, anaerobe, non
spore forming
Hydrolysis of tyrosine, xanthine and casein - CORRECT ANSWER - Nocardia
E blattae - CORRECT ANSWER - Cockroaches
Edwarsella Tarda - CORRECT ANSWER - Reptiles
Y. pestis - CORRECT ANSWER - Rodents or other rats
Salmonella - CORRECT ANSWER - Poultry
Fusobacterium nucleatum - CORRECT ANSWER - Long slender fusiform bacteria,
Strong indole positive, sputum upper respiratory infections
Plasmodium Vivax - CORRECT ANSWER - >12 schizonts
Erysipelothrix rhusiopathiae - CORRECT ANSWER - pipe cleaner motility/ test tube
brush
Integrase - CORRECT ANSWER - responsible for joining the reverse transcribed HIV
DNA to the host cells DNA
Candida albicans - CORRECT ANSWER - Spherical chlamydospores,
Exam Questions and CORRECT Answers
Cytochrome oxidase positive, DNAse negative, ornithine positive and is associated with
gastroenteritis in children is - CORRECT ANSWER - Plesiomonas shigelloides
Fusarium - CORRECT ANSWER - Likely to cause mycotic Keratitis
Saccharomyces cerevisae - CORRECT ANSWER - Bakers yeast
Presumptive test for ID of Lancefield group A strep is - CORRECT ANSWER - Bacitracin
susceptibility
Moraxella lacunata - CORRECT ANSWER - Conjungtivitis
Blue color on simmons citrate - CORRECT ANSWER - production of ammonia from
ammonium phosphate
If bacteria produces tryptophanase to break down the A.A. tryptophan, which is positive for
Kovacs reagent - CORRECT ANSWER - Indole test
Klebsiella oxytoca - CORRECT ANSWER - weak urease positive
Necator Americanus - CORRECT ANSWER -
Morganella morganii - CORRECT ANSWER - non lactose fermenter (not pink on
MacConkey
Class II or higher BSC - CORRECT ANSWER - must be used for bioterrorism agents
,alpha napthalamine - CORRECT ANSWER - Nitrate
VP - CORRECT ANSWER - alpha naphthol
Indole - CORRECT ANSWER - aminobenzaldehyde
Phenylalamine deaminase - CORRECT ANSWER - ferric chloride
Bacillus Anthracis - CORRECT ANSWER - Ulcerating pustule, asia, animal hides
Fonsecaea pedrosoi - CORRECT ANSWER - Chromoblastosis, H&E stained sections of
tissue biopsy, Sclerotic bodies, Copper pennies,
Group A strep - CORRECT ANSWER - Zone of inhibition around bacitracin disk
Serum medium and methylene blue stain originally described by Loeffler is helpful in -
CORRECT ANSWER - Corynebacterium diphtheriae
Mycobacterium Tuberculosis - CORRECT ANSWER - 2 weeks to grow, Rough looking
Mycobacterium Kansasii - CORRECT ANSWER - Develop pigment when exposed to
light (PHOTOCHROMIC)
Mycobacterium scrofulaceum - CORRECT ANSWER - Develop deep yellow (orange)
when incubated in the dark
Mycobacterium Fortuitum - CORRECT ANSWER - White or gray rapid growing 3 days
, Elkenella corrodens - CORRECT ANSWER - Pitting of the agar, bleach smell,
Clostridium pefringens - CORRECT ANSWER - Boxcar, gas gangrene, anaerobe, non
spore forming
Hydrolysis of tyrosine, xanthine and casein - CORRECT ANSWER - Nocardia
E blattae - CORRECT ANSWER - Cockroaches
Edwarsella Tarda - CORRECT ANSWER - Reptiles
Y. pestis - CORRECT ANSWER - Rodents or other rats
Salmonella - CORRECT ANSWER - Poultry
Fusobacterium nucleatum - CORRECT ANSWER - Long slender fusiform bacteria,
Strong indole positive, sputum upper respiratory infections
Plasmodium Vivax - CORRECT ANSWER - >12 schizonts
Erysipelothrix rhusiopathiae - CORRECT ANSWER - pipe cleaner motility/ test tube
brush
Integrase - CORRECT ANSWER - responsible for joining the reverse transcribed HIV
DNA to the host cells DNA
Candida albicans - CORRECT ANSWER - Spherical chlamydospores,
