2012 micro Flashcards
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
What is only found in gram + bacteria?
A) Lipopolysaccharide
B) Lipoteichoic acid
C) Lipoprotein
Lipoteichoic acid
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
Antibody detection as a reliable indicator for the disease
Which of the following viruses causes outbreaks of gastroenteritis in adults and children worldwide?
A) Papillomaviruses
B) Adenovirus
C) Poxviruses
Adenovirus
What is the most common cause of peptic ulcers?
A) C. jejuni
B) V. cholerae
C) H. pylori
H pylori
Which one of these is a waterborne organism?
A) H. pylori
B) V. cholera
C) C. jejuni
V. Cholera
What Enzyme do anaerobic bacteria lack?
A) superoxide dismutase
B) protease
Superoxide dismutase
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
Corynebacterium diptheriae
What causes Epiglottitis?
A) Hemophilus influanzae
B) Hemophilus ducreyi
C) Hemophilus aegypticus
Hemophilus Influanzae
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
Which animal is the resevior of Brucella melitensis?
A) cattle
B) pigs
C) sheep
C
Which organism causes Lymphogranuloma venereum (LGV)?
A) Chlamydia psittaci
B) Chlamydia trachomatis
C) Chlamydia pneumoniae
Chlamydia trachomatis
What causes honeymoon disease?
A) H. influenza
B) Staph. saprophyticus
C) H. ducreyi
Staphylococcus Saprophyticus
Production of which substance helps the adherence of viridian streptococci to dental enamel?
A) carbohydrate
B) protein
C) fat
Carbohydrate
What bacteria causes the most common infections in cystic fibrosis patients?
A) Burkholderia mallei
B) Burkholderia pseudomallei
C) Pseudomonas areguinosa
C) Pseudomonas Areguinosa
causes respiratory tract infections in people w/CF
Which bacteria is the most likely cause of severe community acquired pneumonia?
A) Streptococcus Pyogenes
B) Streptococcus agalactia
C) Streptococcus pneumonia
Streptococcus pneumonia
What does characterize mycoplasma?
Lack of Cell Wall
Which type of E. coli causes dysentery illness?
A) enteroinvasive E. coli
B) enteropathogenic E. coli
C) Enterotoxigenic E. coli
A
Who is most likely to contract HIV?
A) A person who touched an HIV + person
B) A newborn from a mother who is HIV+
B
Which of the following viruses causes keratoconjuctivits?
A) CMV
B) Adenovirus
C) HPV
Adenovirus
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
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
Most Patients have the HBsAg
What’s the causative agent of warts?
A) HPV
B) Adenoviruses
C) CMV
Human Papilloma Virus
Which anaerobe causes intraabdominal abscess after surgery?
A) Clostridium spp.
B) Bacteroides fragilis
C) P. gingivalis
Bacteroides Fragilis
What Bacteria is responsible for contamination of Blood cultures?
A) E. coli
B) Staph. epidermidis
B) Staph. Epidermidis
What does characterize measles virus?
a. brain abscess
b. SSPE
c. encephalitis
SSPE
Subacute sclerosing panencephalitis; a brain inflammation caused by measles
Which of the following organisms causes acute conjunctivitis?
Adenovirus
What causes atypical Pneumonia in Children?
a. Mycoplasma pneumoniae
b. Streptococcus pneumoniae
a. Mycoplasma pneumoniae
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?
Bacillus Cereus
What is true about zoster virus?
a. causes Ramsay-Hunt Syndrome
b. is caused by Ramsay-Hunt Syndrome
c. causes disseminated lesions
a. (the reactivation) causes Ramsay-Hunt Syndrome
What is the major constituent of fungal cell wall? A. Mannoprotein B. Mycolic acid C. Glucan D. Teichoic acid
C. Glucan
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. Attachment of organism to villi in the duodenum
A 30 Year old man tested + for HIV1 Ab. What is the next course of action?
Western-Blot Test to Confirm
What parasitic infection can be prevented by a vaccine?
a. Hydatid cyst
b. Malaria
c. Cutaneous leishmania
c. Cutaneous Leishmania
Which of the following types of candida causes oral thrush?
Candida albica
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
D. Growing in two distinct morphological form
Which of the following characterizes poliovirus?
The degree of paralysis depends on which neurons are affected and the amount of damage that they sustain
What is the main component of aspergilus?
Galactomannan
What kind of spores cause infection in aspergillosis?
Conidia
A patient went to a tropical country and developed a bleeding fever, arthritis, and a rash. Which condition characterizes these symptoms?
Dengune Fever
What Fungi Causes an opportunistic infection in patients with HIV in South-East Asia?
Penicilium Marneffei
