Microbiology for COMLEX Level 1
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Main virulence factor for Staph aureus - Correct answer-Protein A
IVDU causes rapid onset bacterial endocarditis (what bacteria) - Correct answer-
Staph aureus
-Tricuspid valve most commonly affected
-"Tricuspid valve endocarditis"
Most common cause of Toxic Shock Syndrome - Correct answer-Staph aureus
-Hx of nasal packing or tampon in for too long
Treatment for Staph aureus (MSSA) - Correct answer-Nafcillin
-"Naf for Staph"
Pnemonic for Cornybacterium diptheria - Correct answer-"ABCDEFG"
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,-ADP-ribosylation, Beta-prophage, Corynebacterium, Diptheriae, Elongation
Factor 2, Granules
Virulence factor for Gram (-) rods - Correct answer-LPS
-Lipopolysaccharide
Pt with history of dental trauma or dental caries that develops cardiac problems -
Correct answer-1) Strep viridans
2) Strep mutans
3) Strep sanguineous
Two times for Periodic Acid-Schiff (PAS) - Correct answer-1) Whipple's Disease
2) Alpha1-antitrypsin deficiency
Peptidoglycan (cell wall) synthesis is is inhibited by: - Correct answer--Beta
lactams
Community Acquired MRSA - Correct answer--Pt will have recurrent cellulitis or
boils
-Contact sports, prisoners/inmates, military recruits
-Tx: Trimethoprim-sulfamethoxazole
Most important virulence factor for Strep pyogenes - Correct answer-M protein
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, -Prevents phagocytosis and complement activation
-Molecular mimicry
Rheumatic Fever - Correct answer--Strep pyogenes
-JONES criteria
Thick, golden colored crust - Correct answer-Impetigo
-Strep pyogenes
-Tx: topical mupirocin
Erysipelas - Correct answer--Due to Strep pyogenes
-Redness/swelling of an extremity w/ bull and enlarged lymph nodes
Scarlet Fever - Correct answer--Strep pyogenes
-Pyrogenic exotoxin
-1) Strawberry tongue, 2) Sandpaper rash
Necrotizing fasciitis w/ Strep progenies infection - Correct answer--Exotoxin B
-Pain out of proportion to PE findings
Blood cultures in patients with toxic shock syndrome are: - Correct answer-
NEGATIVE in *Staph* SSS
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Exam 2026 Questions and Answers 100%
Pass Guaranteed
Main virulence factor for Staph aureus - Correct answer-Protein A
IVDU causes rapid onset bacterial endocarditis (what bacteria) - Correct answer-
Staph aureus
-Tricuspid valve most commonly affected
-"Tricuspid valve endocarditis"
Most common cause of Toxic Shock Syndrome - Correct answer-Staph aureus
-Hx of nasal packing or tampon in for too long
Treatment for Staph aureus (MSSA) - Correct answer-Nafcillin
-"Naf for Staph"
Pnemonic for Cornybacterium diptheria - Correct answer-"ABCDEFG"
©COPYRIGHT 2025, ALL RIGHTS RESERVE 1
,-ADP-ribosylation, Beta-prophage, Corynebacterium, Diptheriae, Elongation
Factor 2, Granules
Virulence factor for Gram (-) rods - Correct answer-LPS
-Lipopolysaccharide
Pt with history of dental trauma or dental caries that develops cardiac problems -
Correct answer-1) Strep viridans
2) Strep mutans
3) Strep sanguineous
Two times for Periodic Acid-Schiff (PAS) - Correct answer-1) Whipple's Disease
2) Alpha1-antitrypsin deficiency
Peptidoglycan (cell wall) synthesis is is inhibited by: - Correct answer--Beta
lactams
Community Acquired MRSA - Correct answer--Pt will have recurrent cellulitis or
boils
-Contact sports, prisoners/inmates, military recruits
-Tx: Trimethoprim-sulfamethoxazole
Most important virulence factor for Strep pyogenes - Correct answer-M protein
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, -Prevents phagocytosis and complement activation
-Molecular mimicry
Rheumatic Fever - Correct answer--Strep pyogenes
-JONES criteria
Thick, golden colored crust - Correct answer-Impetigo
-Strep pyogenes
-Tx: topical mupirocin
Erysipelas - Correct answer--Due to Strep pyogenes
-Redness/swelling of an extremity w/ bull and enlarged lymph nodes
Scarlet Fever - Correct answer--Strep pyogenes
-Pyrogenic exotoxin
-1) Strawberry tongue, 2) Sandpaper rash
Necrotizing fasciitis w/ Strep progenies infection - Correct answer--Exotoxin B
-Pain out of proportion to PE findings
Blood cultures in patients with toxic shock syndrome are: - Correct answer-
NEGATIVE in *Staph* SSS
©COPYRIGHT 2025, ALL RIGHTS RESERVE 3
