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FB2 Past Exams > 2015 micro > Flashcards

2015 micro Flashcards

1
Q

Which describes clostridium perfringens?
A) Non-capsulated
B) Motile
C) produces double zone hemolysis on blood agar

A

C) produces double zone hemolysis on blood agar

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2
Q

Which of the following allows S. Epidermidis to adhere to valves?
A) Polysaccharide slime
B) Fimbrea
C) Alpha toxins

A

A) Polysaccharide slime

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3
Q

Production of what allows viridians streptococcus to cause dental caries?
A) Acid
B) protein A
C) theta toxins

A

A) Acid

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4
Q

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

A) Salmonella

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5
Q

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

A) Endocarditis

Staphylococcus epidermidis

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6
Q

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

A

B) inhibits acetylcholine release

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7
Q

What will vibrio parahemolyticus cause?
A) food poisoning
B) cellulitis
C) cutaneous skin lesions

A

A) food poisoning

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8
Q

Which is a property of Pseudomonas spp.?
A) produces diffusible pigment
B) oxidase negative
C) non motile

A

A) produces diffusible pigment

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9
Q 
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

A) Bejel

a.k.a. endemic syphilis

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10
Q 
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
A

D) Pinta

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11
Q 
Which one of these causes epidemic conjunctivitis? 
A) H. aegypticus
B) H. poliphylus 
C) H. influenza 
D) H. ducariya
A

A) H. aegypticus

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12
Q

How does proteus spp. promote calculi formation?
A) urease production
B) H2S production
C) deamination

A

A) urease production

create alkaline conditions in the urine, thus making stones

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13
Q

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

A

C) Mycoplasma hominis

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14
Q 
What type can u find in the stool? 
A) hepatitis E
B) hepatitis B 
C) hepatitis C 
D) hepatitis D
A

A) hepatitis E

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15
Q 
What is the difference between staphylococcus aureus and mycoplasma? 
A) Cell membrane
B) Peptidoglycan
C) Ribosomes
D) RNA
A

B) Peptidoglycan

Mycoplasm has no cell wall, so it also doesn’t have peptidoglycan

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16
Q 
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

A) treponema pallidum

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17
Q 
What differentiate mycobacterium tuberculosis acid fastness? 
A) polysaccharide
B) glycoprotein 
C) mycolic acid
D) polymaleic acid
A

C) mycolic acid

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18
Q

What does enterococcus faecalis cause?
A) pneumonia
B) endocarditis
C) cellulitis

A

B) endocarditis

19
Q 
which animal is the reservoir of brucella melitensis?
A) Cows 
B) Sheep
C) Dogs 
D) Pigs
A

B) Sheep

20
Q

which organism causes hemolytic ureic syndrome
A) campylobacter jejuni
B) V. vulnificus

A

A) campylobacter jejuni

21
Q 
what causes superimposed pulmonary infection in patients with cystic fibrosis 
A) prevotella melanogenice
B) S. Epidermis
C) pseudomonas aeruginosa
D) klebsiella
A

C) pseudomonas aeruginosa

22
Q 
virulence of legionella pnuemophila that is active in macrophage and amoeba? 
A) Dot/icm
B) Mak
C) Heat shock protein 
D) Metalloprotease
A

A) Dot/icm

23
Q

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

A) meningococcal conjugated vaccine

he aquired Neisseria meningitidis

24
Q

Which causes acute respiratory distress in patients on immunosuppressive drugs because of a renal transplant?
A) Strongyloidiasis
B) Cysticercosis
C) Amoebiasis

A

A) Strongyloidiasis

25
Q 
Virulence factor of brucella? 
A) capsule
B) smooth lipopolysaccharides 
C) exotoxin
D) fimbriae
A

B) smooth lipopolysaccharides

26
Q 
Typhoid Mary is?
A) asymptomatic
B) chronic
C) convalescent 
D) incubation
A

C) convalescent

convalescent according to the note, but according to google she’s an asymptomatic carrier

27
Q

What characterizes histoplasma capsulatum?
A) Capsulated yeast
B) Yeast in macrophages

A

B) Yeast in macrophages

28
Q 
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
A

D) chocolate agar

29
Q 
What causes a variety of cutaneous warts? 
A) Human papilloma virus
B) West Nile virus
C) Tick-borne encephalitis infection 
D) Poliyoma virus
A

A) Human papilloma virus

30
Q 
What is used to control measles infection? 
A) Peptide vaccine
B) MMR vaccine
C) Hygiene
D) Monoclonal antibodies to f protein
A

B) MMR vaccine

31
Q

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

A) Anaerobe streptococci

Prevotella bivia and Peptostreptococcus micros both cause brain abscess

32
Q 
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
A

D) sellotape method

33
Q 
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
A

D) toxoplasmosis

34
Q 
What of these organisms cause lymphogranuloma venereum? 
A) Chlamydia trachomatis
B) Chlamydia pneumonia 
C) Haemophilis Ducreyi 
D) Mycoplasma Hominis
A

A) Chlamydia trachomatis

35
Q

How is Leishmania transmitted?

a. sexually
b. fecal-oral route
c. sandfly
d. respiratory droplets

A

c. sandfly

36
Q

What is true about exanthema subitum?
A) it is caused by HHV8
B) It is also called roseola infantum

A

B) It is also called roseola infantum

37
Q

Which of the following fungi produced spindle-shaped macroconidia?
A) Microsporum
B) Epidermophyton
C) Trychophyton

A

A) Microsporum

38
Q 
Which fungus is most likely to colonize human mucosa 
A) Candida
B) Mucor
C) Sporanthrix 
D) Aspergillus
A

A) Candida

39
Q

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

A

C) pneumococcal conjugated vaccine

40
Q

Which of the following is true about candida albicans?
A) transmitted by respiratory aerosol
B) capsulated conidia
C) budding yeast forming pseudohyphae

A

C) budding yeast forming pseudohyphae

41
Q

What causes brain abscess?

A

bivia

42
Q 
Which enzyme is a virulence factor of dermatophyte infection? 
A) Laccase
B) Lipase
C) Keratinase
D) Chitinase
A

C) Keratinase

43
Q

which of the following viruses is associated (is manifested with) hemorrhagic fever?

A

Marburg virus

FB2 Past Exams (32 decks)

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