Test 5 Microbiology
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Test # 5 microbiology summer semester
- 1.Which of the following is involved in the in vitro diagnostic testing of serum?
- A.
Mycology
- B.
Hematology
- C.
Serology
- D.
Histology
- E.
Virology
- 2.The property of a test to detect only a certain antibody or antigen?
- A.
Cross-reactions
- B.
Agglutination
- C.
Precipitation
- D.
Specificity
- E.
Sensitivity
- 3.Whole antigens are detected in this type of test:
- A.
Cross-reactions
- B.
Agglutination
- C.
Coagulase
- D.
Specificity
- E.
Sensitivity
- 4.This test uses radioactive isotopes to label antibodies or antigens in order to detect minute amounts of corresponding antigen or antibody?
- A.
Ouchterlony double diffusion
- B.
Western blot
- C.
Immunelectrophoresis
- D.
Radioimmunoassay RIA
- E.
The Quellung test
- 5.This test is the confirming test for people who initially tested antibody-positive in the screening ELISA test:
- A.
Ouchterlony double diffusion
- B.
Western Blot
- C.
Immunelectrophoresis
- D.
Radioimmunoassay(RIA)
- E.
The Quellung test
- 6.Serotyping of the pneumococcus based on capsular polysaccharide is performed in
- A.
Ouchterlony Double diffusion
- B.
Western Blot
- C.
Radioimmunoassay (RIA)
- D.
Immunelectrophoresis
- E.
The Quellung Test
- 7.Which o fthe folowing is not a biochemical test used to identify a pathogen?
- A.
Acid-fast reaction
- B.
Hydrolysis of gelatin
- C.
Coagulase production
- D.
Oxygen requirements
- E.
Carbohydrate fermentation
- 8.All of the following are methods to diagnose viral infections except
- A.
Detection of viral nucleic acid using specific probes
- B.
Western Blot
- C.
Cells taken from patient are examined for evidence of viral infection
- D.
Signs and symptoms
- E.
The light microscope
- 9.Which of the following methods is categorized as a direct test in order to analyze a specimen?
- A.
Catalase test
- B.
Gram stain
- C.
Phage typing
- D.
Antimicrobic sensitivity
- E.
Production of gas
- 10.All of the following are routine biochemical tests to aid in identifying a species except?
- A.
Motility
- B.
Carbohydrate fermentation
- C.
Catalase test
- D.
Oxidase test
- E.
Coagulase test
- 11.Sputum is obtained by
- A.
Swabbing the mouth t sample saliva
- B.
A clean catch urine sample
- C.
The patient coughing up mucus from th elower respiratory system
- D.
A spinal tap above the chest
- E.
A throat swab
- 12.All species of Staphylococcus
- A.
Lack spores
- B.
Are motile
- C.
Have capsules
- D.
Produce coagulase
- E.
All fo the choices are correct
- 13.The toxin of Staphylococcus aureus strains that causes blisters and desquamation of skin in scalded skin syndrome is
- A.
Enterotoxin
- B.
Hemolysin
- C.
Toxic shock syndrome toxin
- D.
Exfoliative toxin
- E.
Erythrogenic toxin
- 14.All the following pertain to Staphylococcus epidermidis infections except
- A.
They often from an endogenous source
- B.
They typically occur after insertion of shunts and prosthetic devices
- C.
Catheterization can introduce the organism and lead to urinary tract infection
- D.
The organism is coagulase negative
- E.
The organism produces a large number of tissue damaging enzymes and toxins
- 15.Scarlet fever is caused by strains of
- A.
Staphylococcus aureus
- B.
Staphylococcus epidermidis
- C.
Staphylococcus saprophyticus
- D.
Streptococcus pyogens
- E.
Streptococcus agalactiae
- 16.Staphylococci can be differentiated from steptococci by the
- A.
Gram stain
- B.
Coagulase test
- C.
Catalase
- D.
Fermentation of mannitol
- E.
None of the choices are correct
- 17.Rebecca Lancefield differentiated streptococci on the basis of differences in their
- A.
Cell wall carbohydrates in a serologica test
- B.
Patterns of hemolysis on blood agar
- C.
Ability to produce catalase
- D.
Gram stain appearance
- E.
All of the choices are correct
- 18.Streptococcus pyogenes causes all the following except
- A.
Necrotizing fascilitis
- B.
Erysipelas
- C.
Impetigo
- D.
Scarlet fever
- E.
Scalded skin syndrome
- 19.Streptococcal pharyngitis involved all the following except
- A.
A purulent exudate over the tonsils
- B.
Can lead to scarlet fever if it is an erythrogenic toxin-producing strain
- C.
Can lead to serious sequelae
- D.
Is usually caused by the viridans streptococci
- E.
Causes redness, difficulty in swallowing, and fever
- 20.All of the following pertain to enterococcus faecalis except
- A.
Normal flora of the human large intestine
- B.
Increaingly resistant to many antimicrobics
- C.
Cause nosocomial wound infections, urinary tract infections, and septicemias
- D.
Can cause endocarditis
- E.
Belong to Lancefield Group B strptococci
- 21.Neisseria gonorrhoeae is
- A.
The cause fo ohthalmia neonatorum
- B.
The cause of gonorrhea
- C.
Called the gonococcus
- D.
Virulent de to fimbriae and a protease that inactivates IgA
- E.
All of the choices are correct
- 22.All of the following pertain to gonorrhea except
- A.
A chancre-type lesion develops at the portal of entry
- B.
It is a reportable infectious disease
- C.
Pelvic inflammatory disease( PID) and infertility are complications
- D.
Females can have asymptomatic infection
- E.
Cymptoms include painfule urination and discharge
- 23.A patient has a suspicious skin infection and a culture is taken. Which media would be appropriate to select for staphylococci?
- A.
Nutrient agar
- B.
Blood agar
- C.
Chocolate agar
- D.
MacConkey agar
- E.
Mannitol salt agar
- 24.A pregnant woman is told she has a positive CAMP test and shuld be treated with a course of antibiotics and gloulin. This test indicative of
- A.
Group A streptococci
- B.
Group B streptococci
- C.
S. epidermidis
- D.
S. saprophyticus
- E.
S. Aureus
- 25.Legionella pneumophila
- A.
Requires special lab growth media
- B.
Often lives in close association with amoebas
- C.
Cause fever, cough, and diarrhea
- D.
Causes a severe pneumonia
- E.
All choices are correct
- 26.Characteristics of all th emembers of the family enterobacteriaceae include
- A.
Ferment lactose
- B.
Are normal flora ofo human intestines
- C.
Produce enterotoxins
- D.
Ferment glucose
- E.
All of the choices are correct
- 27.Which is mismatched?
- A.
H antigen-fimbriae
- B.
K antigen-capsule
- C.
O antigen-cell wall, somatic
- D.
All of the choices are correct
- E.
None of the choices are correct
- 28.Which disease involves transmission by aerosolize water fro whirlpool spas, air conditioners, cooling towers, and supermarket vegetable misters?
- A.
Legionellosis
- B.
Pertussis
- C.
Brucellosis
- D.
Plague
- E.
Traveler's diarrhea
- 29.E. Coli O157:H7 characteristics include all the following except
- A.
It only cause ocupational illness in people who work with animals
- B.
It is transmitted by ingestion of contaminated undercooked food, especially hamburger
- C.
It causes a bloody diarrhea
- D.
It is reservoir is cattle intestines
- E.
Some cases go on to hemolytic uremic syndrome (HUS) with possible kidney failure
- 30.Salmonella are
- A.
Coliforms
- B.
Gram positive rods
- C.
Lactose fermenters
- D.
Motile
- E.
All of the choices are correct
- 31.All fo the following are coliforms that caused oppotunistic and and nosocomial infections except
- A.
Enterobacter
- B.
Citrobacter
- C.
Shigella
- D.
Klebsiela
- E.
Serratia
- 32.Yersinia pestis
- A.
Was virulent in the middle ages but is no longer virulent
- B.
Has humans as an endemic reservoir
- C.
Does not respond to antimicrobic drugs
- D.
Is usually transmitted by a flea vector
- E.
All of the choices are correct
- 33.Which fastidious genus requires hemin(x factor) and NAD(X factor) in its growth medium?
- A.
Legionella
- B.
Haemophilus
- C.
Brucella
- D.
Shigella
- E.
All fo the choices are correct
- 34.All of the following are associated with bubonic plague except
- A.
It tis transmitted by human feces
- B.
The caused by yersinia pestis
- C.
The patient often has enlarged inguinal lymph nodes
- D.
The patient has fever, headache, nausea, weakness
- E.
It can progress to a septicemia
- 35.Which is incorrect about Yersinia pestis?
- A.
Exhibit bipolar staining
- B.
Gram negative rod
- C.
Produces coagulase
- D.
Has a capsule
- E.
Poduces enterotoxin
- 36.Plague includes
- A.
Septicemic form-called black death
- B.
Bubonic form-buboes develop
- C.
Pneumonic form-sputum highly contagious
- D.
Disease control- control of rodent population
- E.
All of the choices are correct
- 37.Which of the folowing is not caused by haemophilus influenzae?
- A.
Bacterial meningitis
- B.
Influenza(flu)
- C.
Otitis media
- D.
Bronchitis
- E.
Epiglottitis
- 38.Which of the following is an agent of the sexually transmitted disease chancroid?
- A.
Haemophilus aegyptius
- B.
Haemophilus influenzae
- C.
Haemophilus parainfluenzae
- D.
Haemophilus ducreyi
- E.
Haemophilus aphrophilus
- 39.Nationwide, over 100,000 patients a year die from septic shock. This is due to
- A.
The presence of lipopolysaccharide in the outer membrane
- B.
Lipoteichoic acid in the cell wall
- C.
A cytotoxin similar to the diphtheria toxin
- D.
Coagulase
- E.
A neurotoxin similar to botulin
- 40.Up to 70% of travel-associated gastrointestinal disease are caused by
- A.
Enterotoxigenic strains of E. coli
- B.
Salmonella
- C.
Shigella dysenteriae
- D.
E. coli O157:H7
- E.
Enteroinvasive E. coli
- 41.All of the following are correct a bout Strptococcus pyogenes except
- A.
Humans are the only significan reservoir
- B.
Some of the streptococcal toxins act as superantigens
- C.
Most strains do nothave a capsule
- D.
It can cause impetigo and erysipelas
- E.
Infection is generally through direct contact
- 42.Characteristics of Bacillus anthracis include all the following except
- A.
Capsule and exotoxins are virulent factors
- B.
Anaerobic
- C.
Reservoir includes infected grazing animals and contaminated soil
- D.
Gram positive bacillus
- E.
Sporeformer
- 43.Which form of anthrax involves a black eschar on the skin?
- A.
Pulmonary
- B.
Gastrointestinal
- C.
Cutaneous
- D.
All of teh choices are correct
- E.
None of the choices are correct
- 44.Which is not correct about Bacillus cereus?
- A.
Present in soil
- B.
Produce enterotoxins
- C.
Causes a zoonosis
- D.
Causes foodborne intoxication
- E.
Associated with cooked rice, potato, and meat dishes that are storedat room temperature
- 45.The foodborne disease that involves neurotoxin is
- A.
Gastrointestinal anthrax
- B.
Bacillus cereus intoxication
- C.
Botulism
- D.
Clostridium perfringens gastroenteritis
- E.
All of the choices are correct
- 46.This organism can infect deeper wound sites and produce exotoxins, enzymes and gas that cause tissue and muscle necrosis
- A.
Clostridium botulinum
- B.
Clostriduium perfringens
- C.
Dlostridium difficile
- D.
Clostridium tetani
- E.
All fo the choices are correct
- 47.Which of the following pertains to both tetanus and foodborne botulism?
- A.
It occurs when spore-contaminated soil enters deep wounds
- B.
It is caused by enterotoxins of the pathogen
- C.
Exotoxin blocks acetylcholine release
- D.
Nausea and diarrhea are symptoms
- 48.All of the following pertain to Clostridium difficile infection except
- A.
It it due to ingestion of contaminated, improperly stored, cooked meats and gravies
- B.
It is a colitis that is a superinfection
- C.
It often has an endogenous source
- D.
It may be on the rise due to increased use of gastric acid inhibitors
- E.
It is major cause of diarrhea in hospitals
- 49.All of the following pertain to Listeria monocytogenes except:
- A.
Gram positive
- B.
Sporeformer
- C.
Contaminant of dairy product, meats, poultry
- D.
Causes foodborne listeriosis
- E.
Bacterial cells multiply within the cytoplasm of a host cell
- 50.Formation of a pseudomembrane in the back of the throat is seen in
- A.
Diphtheria
- B.
Listeriosis
- C.
Tuberculosis
- D.
Erysipeloid
- E.
Botulism
- 51.Which is not correct about Mycobacterium species?
- A.
All species are human pathogens
- B.
Cell walls have waxy lipids
- C.
Acid fast
- D.
Usually have a slow growth rate
- E.
Long, slender rods
- 52.Leprosy is a disease
- A.
Of lung tissue
- B.
That has benn eradicated around the world
- C.
Caused by a pathogen that cannot be cultured in the lab
- D.
Can be diagnosed by teh Mantoux test
- E.
Caused by a sporeforming, gram-positive bacillus
- 53.What is the usual cause of pseudomembranous colitis?
- A.
Improperly home-preserved foods containing botulin toxin
- B.
Eating unpateurized diry containing Listeria monocytogenes
- C.
Handling infected animals contaminated with E. rhusiopathiae
- D.
Therapy with broad-spectrum antibiotics leading to superinfection by C. difficile
- E.
Living in close contac with someone infected with C. perfringens
- 54.Which of the following may be recommended for treating gangrene?
- A.
Debridement of the wound
- B.
Hyperbaric chamber
- C.
Amputation fo affected limb
- D.
Rigorous cleansing of deep wounds
- E.
All of the choices are correct
- 55.Pseudomonas aeruginosa is
- A.
Found in soil and water
- B.
An opportunist that produces many diverse enzymes
- C.
Highly chemical resistant
- D.
Motile
- E.
All of the choices are correct
- 56.Which color pigment is produced by Pseudomonas seruginosa?
- A.
Lemon yellow
- B.
Red-orange
- C.
Golden
- D.
Blue-green
- E.
Pale orange
- 57.Leginonella pneumophila
- A.
Requires special lab growth media
- B.
Often lives in close association with amoebas
- C.
Causes fever, cough, and diarrhea
- D.
Causes a severe pneumonia
- E.
All of the choices are correct
- 58.Is negative for lysine decarboxylase
- A.
Klebsiella pneumonia
- B.
Enterobacter aerogenes
- C.
E. coli
- D.
Proteus mirabilis
- E.
Serratia marcescenes
- 59.Is negative for ornithine decarboxylase
- A.
Klebsiella pneumonia
- B.
Enterobacter aerogenes
- C.
E. coli
- D.
Proteus mirabilis
- E.
Serratia marcescenes
- 60.Isa negative for arabinose and negative for sorbitol
- A.
Klebsiella pneumonia
- B.
Enterobacter aerogenes
- C.
E. coli
- D.
Proteus mirabilis
- E.
Serratia marcescenes
- 61.Is negative for citrate
- A.
Klebsiella pneumonia
- B.
Enterobacter aerogenes
- C.
E. coli
- D.
Proteus mirabilis
- E.
Serratia Marcescenes
- 62.Infections caused by staphylococcus aureus include all the following except
- A.
Folliculitis
- B.
Furuncles and carbuncles
- C.
Sore throat
- D.
Osteomyelitis
- E.
Pneumonia
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