2015 micro Flashcards
Which describes clostridium perfringens?
A) Non-capsulated
B) Motile
C) produces double zone hemolysis on blood agar
C) produces double zone hemolysis on blood agar
Which of the following allows S. Epidermidis to adhere to valves?
A) Polysaccharide slime
B) Fimbrea
C) Alpha toxins
A) Polysaccharide slime
Production of what allows viridians streptococcus to cause dental caries?
A) Acid
B) protein A
C) theta toxins
A) Acid
A man presented with fever, chills, constipation, and pink spots on the legs. What is the most likely cause?
A) Salmonella
B) Clostridium botulinum
C) Vibrio parahemolyticus
A) Salmonella
Gram-positive cocci in chains and do not show hemolysis on blood agar may cause which of the following?
A) Endocarditis
B) Meningitis
C) Epiglotitis
A) Endocarditis
Staphylococcus epidermidis
What is a property of the toxin released by Clostridium botulinum?
A) it’s an alpha toxin
B) inhibits acetylcholine release
C) it’s an endotoxin
B) inhibits acetylcholine release
What will vibrio parahemolyticus cause?
A) food poisoning
B) cellulitis
C) cutaneous skin lesions
A) food poisoning
Which is a property of Pseudomonas spp.?
A) produces diffusible pigment
B) oxidase negative
C) non motile
A) produces diffusible pigment
An 8-year-old African boy exhibited a lesion around his mouth, and later on exhibiteda mucous patch in the oropharyngeal region. What is the name of the disease? A) Bejel B) Yaws C) Syphilis D) Pinta
A) Bejel
a.k.a. endemic syphilis
A 7-year-old boy experienced small erythematous lesions that caused hypopigmentation when it healed. What is the name of the disease? A) Bejel B) Yaws C) Syphilis D) Pinta
D) Pinta
Which one of these causes epidemic conjunctivitis? A) H. aegypticus B) H. poliphylus C) H. influenza D) H. ducariya
A) H. aegypticus
How does proteus spp. promote calculi formation?
A) urease production
B) H2S production
C) deamination
A) urease production
create alkaline conditions in the urine, thus making stones
A 24-year-old man experienced urethral discharge, on examination the culture showed many pus cells but no other organism was detected, what could be a possible cause of this?
A) Neisseria gonorrhea
B) Haemophilus influenza
C) Mycoplasma hominis
C) Mycoplasma hominis
What type can u find in the stool? A) hepatitis E B) hepatitis B C) hepatitis C D) hepatitis D
A) hepatitis E
What is the difference between staphylococcus aureus and mycoplasma? A) Cell membrane B) Peptidoglycan C) Ribosomes D) RNA
B) Peptidoglycan
Mycoplasm has no cell wall, so it also doesn’t have peptidoglycan
A man had painless ulcer in his penis, what is the cause? A) treponema pallidum B) treponema carateum C) haemophilus ducreyi D) haemophilus influenzae
A) treponema pallidum
What differentiate mycobacterium tuberculosis acid fastness? A) polysaccharide B) glycoprotein C) mycolic acid D) polymaleic acid
C) mycolic acid
What does enterococcus faecalis cause?
A) pneumonia
B) endocarditis
C) cellulitis
B) endocarditis
which animal is the reservoir of brucella melitensis? A) Cows B) Sheep C) Dogs D) Pigs
B) Sheep
which organism causes hemolytic ureic syndrome
A) campylobacter jejuni
B) V. vulnificus
A) campylobacter jejuni
what causes superimposed pulmonary infection in patients with cystic fibrosis A) prevotella melanogenice B) S. Epidermis C) pseudomonas aeruginosa D) klebsiella
C) pseudomonas aeruginosa
virulence of legionella pnuemophila that is active in macrophage and amoeba? A) Dot/icm B) Mak C) Heat shock protein D) Metalloprotease
A) Dot/icm
A 4-month old baby administered to the hospital with meningitis. CSF showed gram-negative diplococci organism. What’s the most likely vaccine he missed?
A) meningococcal conjugated vaccine
B) heamophilus influenza type B vaccine
C) pneumococcal conjugated vaccine
A) meningococcal conjugated vaccine
he aquired Neisseria meningitidis
Which causes acute respiratory distress in patients on immunosuppressive drugs because of a renal transplant?
A) Strongyloidiasis
B) Cysticercosis
C) Amoebiasis
A) Strongyloidiasis
Virulence factor of brucella? A) capsule B) smooth lipopolysaccharides C) exotoxin D) fimbriae
B) smooth lipopolysaccharides
Typhoid Mary is? A) asymptomatic B) chronic C) convalescent D) incubation
C) convalescent
convalescent according to the note, but according to google she’s an asymptomatic carrier
What characterizes histoplasma capsulatum?
A) Capsulated yeast
B) Yeast in macrophages
B) Yeast in macrophages
Haemophilus Aegyptus needs X and V factors for its growth. Which media contains this? A) blood agar B) MacConky agar C) Muller Hinton agar D) chocolate agar
D) chocolate agar
What causes a variety of cutaneous warts? A) Human papilloma virus B) West Nile virus C) Tick-borne encephalitis infection D) Poliyoma virus
A) Human papilloma virus
What is used to control measles infection? A) Peptide vaccine B) MMR vaccine C) Hygiene D) Monoclonal antibodies to f protein
B) MMR vaccine
A case of 28 years old with brain abscess what’s most likely to be the cause of the disease?
A) Anaerobe streptococci
B) Clostridium perfringens
C) Fusobacterium
A) Anaerobe streptococci
Prevotella bivia and Peptostreptococcus micros both cause brain abscess
How can you diagnose a 3 years old child with Entrobius vermicularis? A) find ova in the stool B) serology of IgG C) find ova in the urine D) sellotape method
D) sellotape method
Which parasitic infection gives rise to congenital malformation in the fetus if transmitted from an infected mother in the first trimester of pregnancy A) leishmeniasis B) cryptosporidiosis C) trichomoniasis D) toxoplasmosis
D) toxoplasmosis
What of these organisms cause lymphogranuloma venereum? A) Chlamydia trachomatis B) Chlamydia pneumonia C) Haemophilis Ducreyi D) Mycoplasma Hominis
A) Chlamydia trachomatis
How is Leishmania transmitted?
a. sexually
b. fecal-oral route
c. sandfly
d. respiratory droplets
c. sandfly
What is true about exanthema subitum?
A) it is caused by HHV8
B) It is also called roseola infantum
B) It is also called roseola infantum
Which of the following fungi produced spindle-shaped macroconidia?
A) Microsporum
B) Epidermophyton
C) Trychophyton
A) Microsporum
Which fungus is most likely to colonize human mucosa A) Candida B) Mucor C) Sporanthrix D) Aspergillus
A) Candida
A 4-month old baby administered to the hospital with meningitis. CSF showed gram-positive diplococci organism. What’s the most likely vaccine he missed
A) meningococcal conjugated vaccine
B) Haemophilus influenza type B vaccine
C) pneumococcal conjugated vaccine
C) pneumococcal conjugated vaccine
Which of the following is true about candida albicans?
A) transmitted by respiratory aerosol
B) capsulated conidia
C) budding yeast forming pseudohyphae
C) budding yeast forming pseudohyphae
What causes brain abscess?
bivia
Which enzyme is a virulence factor of dermatophyte infection? A) Laccase B) Lipase C) Keratinase D) Chitinase
C) Keratinase
which of the following viruses is associated (is manifested with) hemorrhagic fever?
Marburg virus
