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FB2 Past Exams > 2012 micro > Flashcards

2012 micro Flashcards

1
Q

18 years old man presented with an ulcer on his penis; black field microscopy showed a spirochete organism. Which of the following organisms explain these characteristics?
A) T. pallidium
B) T. pertenue
C) T. carateum

A

A

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2
Q

What is only found in gram + bacteria?
A) Lipopolysaccharide
B) Lipoteichoic acid
C) Lipoprotein

A

Lipoteichoic acid

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3
Q

What are the characteristics of Chronic HCV?
A) transmitted via the fecal-oral route
B) can be preventable by vaccine
C) antibody detection as a reliable indicator for the disease

A

Antibody detection as a reliable indicator for the disease

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4
Q

Which of the following viruses causes outbreaks of gastroenteritis in adults and children worldwide?
A) Papillomaviruses
B) Adenovirus
C) Poxviruses

A

Adenovirus

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5
Q

What is the most common cause of peptic ulcers?
A) C. jejuni
B) V. cholerae
C) H. pylori

A

H pylori

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6
Q

Which one of these is a waterborne organism?
A) H. pylori
B) V. cholera
C) C. jejuni

A

V. Cholera

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7
Q

What Enzyme do anaerobic bacteria lack?
A) superoxide dismutase
B) protease

A

Superoxide dismutase

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8
Q

A child was admitted to the hospital with respiratory distress. An examination showed necrotic pharyngeal tissue with exudate pseudomembranous. When the mother was asked she said that she didn’t vaccinate him. What is the likely cause for the child’s condition?
A) Corynebacterium diphtheroid
B) Listeria monocytogenes
C) Corynebacterium diptheriae

A

Corynebacterium diptheriae

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9
Q

What causes Epiglottitis?
A) Hemophilus influanzae
B) Hemophilus ducreyi
C) Hemophilus aegypticus

A

Hemophilus Influanzae

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10
Q 
A man came with dry penile ulcer. What is the most likely diagnosis to
cause this symptom? 
A) H. ducreyi
B) H. influenza
C) Honeymoon cystitis
A

A

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11
Q

Which animal is the resevior of Brucella melitensis?
A) cattle
B) pigs
C) sheep

A

C

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12
Q

Which organism causes Lymphogranuloma venereum (LGV)?
A) Chlamydia psittaci
B) Chlamydia trachomatis
C) Chlamydia pneumoniae

A

Chlamydia trachomatis

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13
Q

What causes honeymoon disease?
A) H. influenza
B) Staph. saprophyticus
C) H. ducreyi

A

Staphylococcus Saprophyticus

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14
Q

Production of which substance helps the adherence of viridian streptococci to dental enamel?
A) carbohydrate
B) protein
C) fat

A

Carbohydrate

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15
Q

What bacteria causes the most common infections in cystic fibrosis patients?
A) Burkholderia mallei
B) Burkholderia pseudomallei
C) Pseudomonas areguinosa

A

C) Pseudomonas Areguinosa

causes respiratory tract infections in people w/CF

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16
Q

Which bacteria is the most likely cause of severe community acquired pneumonia?
A) Streptococcus Pyogenes
B) Streptococcus agalactia
C) Streptococcus pneumonia

A

Streptococcus pneumonia

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17
Q

What does characterize mycoplasma?

A

Lack of Cell Wall

18
Q

Which type of E. coli causes dysentery illness?
A) enteroinvasive E. coli
B) enteropathogenic E. coli
C) Enterotoxigenic E. coli

A

A

19
Q

Who is most likely to contract HIV?
A) A person who touched an HIV + person
B) A newborn from a mother who is HIV+

A

B

20
Q

Which of the following viruses causes keratoconjuctivits?
A) CMV
B) Adenovirus
C) HPV

A

Adenovirus

21
Q 
Which of the following groups of hepatitis viruses is transmitted by feco-oral route? 
A) Hepatitis A 
B) Hepatitis B 
C) Hepatitis C
D) Hepatitis D
E) Hepatitis G
A

A

22
Q

What’s true regarding Hepatitis B Infection?
A) can be prevented by improved hygiene
B) most commonly spread by breast milk, urine, or feces
C) most Patients have the HBsAg

A

Most Patients have the HBsAg

23
Q

What’s the causative agent of warts?
A) HPV
B) Adenoviruses
C) CMV

A

Human Papilloma Virus

24
Q

Which anaerobe causes intraabdominal abscess after surgery?
A) Clostridium spp.
B) Bacteroides fragilis
C) P. gingivalis

A

Bacteroides Fragilis

25
Q

What Bacteria is responsible for contamination of Blood cultures?
A) E. coli
B) Staph. epidermidis

A

B) Staph. Epidermidis

26
Q

What does characterize measles virus?

a. brain abscess
b. SSPE
c. encephalitis

A

SSPE

Subacute sclerosing panencephalitis; a brain inflammation caused by measles

27
Q

Which of the following organisms causes acute conjunctivitis?

A

Adenovirus

28
Q

What causes atypical Pneumonia in Children?

a. Mycoplasma pneumoniae
b. Streptococcus pneumoniae

A

a. Mycoplasma pneumoniae

29
Q

A man and his wife went to a Chinese restaurant and had rice. Shortly after they developed abdominal pain and started vomiting. What is the causative agent?

A

Bacillus Cereus

30
Q

What is true about zoster virus?

a. causes Ramsay-Hunt Syndrome
b. is caused by Ramsay-Hunt Syndrome
c. causes disseminated lesions

A

a. (the reactivation) causes Ramsay-Hunt Syndrome

31
Q 
What is the major constituent of fungal cell wall?
A. Mannoprotein
B. Mycolic acid 
C. Glucan
D. Teichoic acid
A

C. Glucan

32
Q

What is the mechanism by which giardia lambia caused disease?

a. Attachment of organism to villi in the duodenum
b. Invasion of the vili in the duodenum

A

a. Attachment of organism to villi in the duodenum

33
Q

A 30 Year old man tested + for HIV1 Ab. What is the next course of action?

A

Western-Blot Test to Confirm

34
Q

What parasitic infection can be prevented by a vaccine?

a. Hydatid cyst
b. Malaria
c. Cutaneous leishmania

A

c. Cutaneous Leishmania

35
Q

Which of the following types of candida causes oral thrush?

A

Candida albica

36
Q

How is dimorphism in fungi defined?
A. A process of both meiosis and mitosis
B. Male and female hyphae together
C. Production of two types of spores
D. Growing in two distinct morphological form

A

D. Growing in two distinct morphological form

37
Q

Which of the following characterizes poliovirus?

A

The degree of paralysis depends on which neurons are affected and the amount of damage that they sustain

38
Q

What is the main component of aspergilus?

A

Galactomannan

39
Q

What kind of spores cause infection in aspergillosis?

A

Conidia

40
Q

A patient went to a tropical country and developed a bleeding fever, arthritis, and a rash. Which condition characterizes these symptoms?

A

Dengune Fever

41
Q

What Fungi Causes an opportunistic infection in patients with HIV in South-East Asia?

A

Penicilium Marneffei

FB2 Past Exams (32 decks)

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