Microbiology Test: Questions And Answers
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- 1.The PAP test is useful in the diagnostics of infections caused by:
- A.
Hepatitis C
- B.
Hepatits B
- C.
Molluscum contagiosum virus
- D.
Human papilloma virus
- E.
Herpes virus
- 2.Debridement, penicillin G, clindamycin, metronidazole, and hyperbaric oxygen may be used in the treatment of infections caused by:
- A.
Clostridium perfringens
- B.
Streptococcus pneumoniae
- C.
Streptococcus pyogenes
- D.
Staphylococcus epidermidis
- E.
Mycobacterium tuberculosis
- 3.Common cold is most often caused by:
- A.
Rhinovirus
- B.
Sars-Cov-1
- C.
Sars-coV-2
- D.
Influenza virus
- E.
Streptococcus pyogenese
- 4.Which of the following toxins causes vascular damage in the colon, kidneys, and central nervous system, what may result in hemorrhagic colitis or more severe conditions such as a hemolytic uremic syndrome?
- A.
Shiga toxin
- B.
Vacuolating cytotoxin VacA
- C.
Enterotoxin from Staphylococcus aureus
- D.
Listeriolysin O
- E.
Cereulide
- 5.A 46-year-old sexually active woman is suffering from an infection caused by long spiral bacteria. Point at the most probable species:
- A.
Mycoplasma hominis
- B.
Streptococcus agalactiae
- C.
Haemophilus ducreyi
- D.
Treponema pallidum
- E.
Chlamydia tranchomatis
- 6.Which of the following UTI pathogens often leads to kidney stones formation?
- A.
Klebsiella pneumoniae
- B.
Acintobacter baumannii
- C.
Pseudomonas aeruginosa
- D.
Staphylococcus saprophyticus
- E.
Proteus mirabillis
- F.
Enterococcus faecalis
- 7.A 49-year-old man was hospitalized because of a high fever, most probably related to large wounds localized on his left leg. He suffered from diabetes mellitus, during his hospital stay the wounds were cleaned and a swab was taken. The culture was positive for Acinetobacter baumannii, bacteria that are:
- A.
Gram-negative rods
- B.
Sensitive to cephalosporins
- C.
Thermophilic
- D.
Strictly anaerobic
- E.
Coagulase-positive
- 8.A 22-year-old reported fever and headache, paroxysms of stabbing pain in the muscles of the chest and abdomen. The slightest movement of the rib cage caused a sharp increase of pain, which makes it very difficult to breathe. He was diagnoses with Bornholm disease caused by Coxsackie B virus, the pathogen that contains:
- A.
DsDNA
- B.
SsDNA
- C.
Nucleoid
- D.
RNA
- E.
Plasmids
- 9.Point at the virulence factor playing an important role In the pathogenesis of infections caused by S.aures:
- A.
Streptolysin
- B.
Listeriolisn
- C.
Beta-haemolysin
- D.
LPS
- E.
Shiga toxin
- 10.If the TPHA test confirms the suspected infection, the following disease has developed:
- A.
Syphillis
- B.
Chancre
- C.
Chancroid
- D.
Gonorrhea
- E.
Herpangina
- 11.Which of the following species is the common cause of bacterial gastroenteritis and is considered as a major triggering agent of Guillain-Barre Syndrome (GBS)?
- A.
Campylobacter jejuni
- B.
Escherichia coli
- C.
Shigella sonnei
- D.
Salmonella Enteritidis
- E.
Salmonella typhi
- F.
Listeria monocytogenes
- G.
Clostridium perfringens
- 12.The surgical wound of a 48-year-old patient worsened, pus appeared, cellulitis was observed. Culture of a swab revealed small colonies on Coccosel agar. Under the microscope Gram(+) cocci were observed, Sensitivity tests revealed that they were VRE and HLAR. Infection may be treated with:
- A.
Linezolid
- B.
Vancomycin
- C.
Teicoplanin
- D.
Streptomycin
- E.
Gentamicin
- 13.Which of the following diarrheagenic pathotypes of E.coli caused diarrhea by producing heat-stable (LT) and /or heat-stable (ST) enterotoxins, which are plasmid-encoded?
- A.
EPEC
- B.
EHEC
- C.
EIEC
- D.
ETEC
- E.
EAEC
- 14.A 63-year-old man noticed that he has significant weight loss in about 2 months of time. he reported abdominal pain, episodes of diarrhea, and cough in the last weeks. Culture of sputum revealed the presence of acid-fast bacteria so the treatment should last for:
- A.
6 months
- B.
24 months
- C.
1 week
- D.
2 weeks
- E.
4 weeks
- 15.A 67-year-old man was diagnosed with pneumonia. Alpha-haemolytic and optochin-sensitive bacteria were isolated, under the microscope you most likely see:
- A.
Gram-postive diplococci
- B.
Gram-positive rods
- C.
Gram-negative diplococci
- D.
Gram-negative rods
- E.
Spirochetes
- 16.Gonorrhea is most often asymptomatic in:
- A.
Women
- B.
Newborns
- C.
Infants
- D.
Preschool children
- E.
Men
- 17.Which of the following diarrheagenic pathotypes of E.coli colonizes intestinal mucosa via aggregative adherence fimbriae (AAF), formulates mucoid biofilm, and elaborates various enterotoxins and cytotoxins?
- A.
ETEC
- B.
EAEC
- C.
EHEC
- D.
EPEC
- E.
EIEC
- 18.A make infant has been delivered prematurely. The boy became septic two days after the birth. The infant's blood culture revealed Gram(+), catalase (-) cocci. The mother's vaginal-rectal swab culture showed glistening grey-white colonies with a narrow zone of beta-hemolysin on Columbia Agar. Which of the following is the most likely cause of the infant's infections?
- A.
Streptococcus agalactiae
- B.
Streptococcus pyogenes
- C.
Streptococcus dysgalactiae
- D.
Streptococcus pneumoniae
- 19.A female student is admitted to the emergency with symptoms of a severe UTI. Gram-negative. facultative anaerobic, motile, lactose-positive rods have been isolated from the middle-stream urine sample. Point at the most causative agent of this infections:
- A.
Serratia marcescens
- B.
Enterobacter cloacae
- C.
Escherichia coli
- D.
Klebsiella pneumoniae
- E.
Citrobacter freundii
- 20.A 27-year-old women is suffering from a sexually transmitted bacterial infection caused by the obligatory intracellular parasite. which of the following treatment may be administered?
- A.
Carbapenems
- B.
Penicillins
- C.
Glycopeptides
- D.
Cephalosporins
- E.
Tetracyclines
- 21.A 3-year-old failed to thrive, lost weight, complaining about abdominal pain. The mother reported that her son had episodes of diarrhea and cough. The sputum culture revealed the presence of acid-fast bacteria, the cell wall of which contains:
- A.
Sulfatides
- B.
Lipid A
- C.
Antigen H
- D.
Antigen 0
- E.
Protein A
- 22.If the female newborn presents with infectious conjunctivitis, her mother most probably suffers from:
- A.
Gonorrhea
- B.
Meningococcemia
- C.
Bacterial vaginosis
- D.
Syphills
- E.
GBS pneumonia
- 23.A 56-year-old man is admitted to the emergency with left flank pain (pain in the lumbar region). A CAT scan is being ordered along with a urinalysis and microbiological culture. A CAT scan shows two kidney stones. Urinalysis is positive for blood, nitrites, and bacteria in the urine. Microbiological culture shows Gram-negative lactose-negative rods, Point at the most likely pathogen:
- A.
Proteus penneri
- B.
Acinetobacter baumannii
- C.
Pseudomonas aeruhinosa
- D.
Morganella morganii
- 24.The burn wound of the 22-year-old patient worsened, blue-green pus appeared, cellulitis was observed. The culture of a swab revealed Jasmin smelling of the greenish colonies. Gram-negative rods were observed under the light microscope. The most likely species was:
- A.
Pseudomonas aeruginosa
- B.
Acinetobacter baumannii
- C.
Escherichia coli
- D.
Legionella pneumophlia
- E.
Bacteroids fragills
- 25.Which of the following bacterial colonies will be large and yellow after 24 hours of incubation at 37 celsius on the Thiosulfate-Citrate-Bile Salts-Sucrose (TCBS) Agar?
- A.
Vibrio cholerae colonies
- B.
Campylocabacter jejuni colonies
- C.
Listeria monocytogenes colonies
- D.
Escherichia coli colonies
- E.
Pseudomonas aeruginosa colonies
- F.
Shigella sonnei colonies
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