MLT-240 Clinical Microbiology Final Exam With
Complete Solutions (Latest 2024/2025) Guide| Test
Bank
Thayer-Martin antibiotics and what they inhibit - ANSWERVancomycin - Gram
Positive
Trimethoprim - Proteus
Colistin - Gram Negative
Yeast - Nystatin
The persistent survival of microorganisms on a surface of the human body: -
ANSWERColonization
What bacteria is associated with swimmer's ear? - ANSWERPseudomonas aeruginosa
What reagent is used in the catalase test? - ANSWERHydrogen Peroxide
PEA is what type of agar? - ANSWERSelective
Hektoen Enteric (HE) is what type of agar? - ANSWERSelective and Differential
What bacteria has a tumbling motility? - ANSWERListeria monocytogenes
Critical distinction between Staphylococcus aureus and other staph? -
ANSWERCoagulase production
What bacteria is associated with Glanders disease? - ANSWERBurkholderia mallei
What test differentiates Vibrio spp. from Aeromonas and Plesiomonas? -
ANSWERString Test
Thioglycollate broth is which type of broth? - ANSWERSupportive and Enrichment
What Streptococcus pyogenes toxin will produce hemolysis on the agar? -
ANSWERStreptolysin S
What bacteria is PYR positive?
a. Staphylococcus aureus
b. Staphylococcus hominis
c. Staphylococcus intermedius
d. Staphylococcus saprophyticus - ANSWERStaphylococcus intermedius
Children with beta-hemolytic strep infections can develop what disease? -
ANSWERAcute glomerulonephritis
Bacteria associated with dog bites? - ANSWERStaphylococcus intermedius
, Optochin disk is used for the ID of what bacteria? - ANSWERStreptococcus
pneumoniae
What GPR gives off an ammonia odor? - ANSWERStenotrophomonas maltophilia
MacConkey is what type of agar? - ANSWERSelective and Differential
Thayer-Marin is what type of agar? - ANSWERSelective and enrichment
What toxin of Streptococcus pyogenes produces the scarlet fever rash? -
ANSWERErythrogenic toxin
What organism exhibits the satellite phenomenon around colonies of staphylococci?
- ANSWERHaemophilus influenzae
Spore-forming gram-pos bacilli that are nonhemolytic, nonmotile, and penicillin-
susceptible, and that produce a wide zone of lecithinase on egg yolk agar can be ID'd
as - ANSWERBacillus anthracis
What agar would you use to enhance the growth of in order to differentiate from
Corynebacterium jeikeium and Corynebacteriu urealyticum from other spp. -
ANSWERLoeffler
What test differentiates corynebacterium diptheriae from other Corynebacterium
spp? - ANSWERUrea Hydrolysis
What type of agar is XLD? - ANSWERSelective and Differential
What type of agar is Sheep Blood? - ANSWERSupportive and Differential
What type of agar is CNA? - ANSWERSelective
Bacterial spp that can grow on 6.5% NaCl and 40% bile which is part of normal fecal
flora of animals and humans, nonhemolytic, and a major cause of nosocomial
infections - ANSWEREnterococcus faecalis
What type of agar is Chocolate? - ANSWERSupportive and Enrichment
Group B strep spp. - ANSWERS. agalactiae
Group D strep spp. - ANSWERS. bovis
Group A strep spp. - ANSWERS. pyogenes
No group strep spp. - ANSWERS. pneumoniae
Complete Solutions (Latest 2024/2025) Guide| Test
Bank
Thayer-Martin antibiotics and what they inhibit - ANSWERVancomycin - Gram
Positive
Trimethoprim - Proteus
Colistin - Gram Negative
Yeast - Nystatin
The persistent survival of microorganisms on a surface of the human body: -
ANSWERColonization
What bacteria is associated with swimmer's ear? - ANSWERPseudomonas aeruginosa
What reagent is used in the catalase test? - ANSWERHydrogen Peroxide
PEA is what type of agar? - ANSWERSelective
Hektoen Enteric (HE) is what type of agar? - ANSWERSelective and Differential
What bacteria has a tumbling motility? - ANSWERListeria monocytogenes
Critical distinction between Staphylococcus aureus and other staph? -
ANSWERCoagulase production
What bacteria is associated with Glanders disease? - ANSWERBurkholderia mallei
What test differentiates Vibrio spp. from Aeromonas and Plesiomonas? -
ANSWERString Test
Thioglycollate broth is which type of broth? - ANSWERSupportive and Enrichment
What Streptococcus pyogenes toxin will produce hemolysis on the agar? -
ANSWERStreptolysin S
What bacteria is PYR positive?
a. Staphylococcus aureus
b. Staphylococcus hominis
c. Staphylococcus intermedius
d. Staphylococcus saprophyticus - ANSWERStaphylococcus intermedius
Children with beta-hemolytic strep infections can develop what disease? -
ANSWERAcute glomerulonephritis
Bacteria associated with dog bites? - ANSWERStaphylococcus intermedius
, Optochin disk is used for the ID of what bacteria? - ANSWERStreptococcus
pneumoniae
What GPR gives off an ammonia odor? - ANSWERStenotrophomonas maltophilia
MacConkey is what type of agar? - ANSWERSelective and Differential
Thayer-Marin is what type of agar? - ANSWERSelective and enrichment
What toxin of Streptococcus pyogenes produces the scarlet fever rash? -
ANSWERErythrogenic toxin
What organism exhibits the satellite phenomenon around colonies of staphylococci?
- ANSWERHaemophilus influenzae
Spore-forming gram-pos bacilli that are nonhemolytic, nonmotile, and penicillin-
susceptible, and that produce a wide zone of lecithinase on egg yolk agar can be ID'd
as - ANSWERBacillus anthracis
What agar would you use to enhance the growth of in order to differentiate from
Corynebacterium jeikeium and Corynebacteriu urealyticum from other spp. -
ANSWERLoeffler
What test differentiates corynebacterium diptheriae from other Corynebacterium
spp? - ANSWERUrea Hydrolysis
What type of agar is XLD? - ANSWERSelective and Differential
What type of agar is Sheep Blood? - ANSWERSupportive and Differential
What type of agar is CNA? - ANSWERSelective
Bacterial spp that can grow on 6.5% NaCl and 40% bile which is part of normal fecal
flora of animals and humans, nonhemolytic, and a major cause of nosocomial
infections - ANSWEREnterococcus faecalis
What type of agar is Chocolate? - ANSWERSupportive and Enrichment
Group B strep spp. - ANSWERS. agalactiae
Group D strep spp. - ANSWERS. bovis
Group A strep spp. - ANSWERS. pyogenes
No group strep spp. - ANSWERS. pneumoniae
