question
Which of the following virulence factors contributing the pathogenecity of Neisseria species?
answer
both a capsule and a fimbriae
question
Lipid A causes which of the following symptoms?
answer
fever and disseminated intravascular coagulation
question
Neisseria honorrhoease infection in men is
answer
an acute painful infection with pus discharge
question
Which of the following statements about Neisseria gonorrhoeae is FALSE?
answer
the gonococci induce lasting immunity
question
Among the areas of the female genital tract which of the following is NOT colonized by Neisseria gonorrhoeae?
answer
the vagina
question
The major damage caused by Neisseria meningitidis is a result of
answer
the release of lipid A into the tissues, triggering severe inflammation
question
Which of the following is a diagnostic for Neisseria meningitidis?
answer
the presence of Gram-negative diplococci in CSF phagocytes
question
Members of the Enterobacteriaceae can be distinguished from each other by
answer
both motility and the ability to ferment lactose
question
What virulence factor(s) do all Gram-negative bacteria share?
answer
lipid A
question
Which of the following statements about Neisseria meningitidis is FALSE?
answer
There are vaccines available to prevent infection with all strains
question
A lung specimen from a pneumonia patient contains Gram-negative bacilli. Laboratory test results on the bacteria show they nonmotile coliforms with a thick capsule. Which pathogen is the likely cause of the pneumonia?
answer
Klebsiella
question
Which of the following coliforms is the most common cause of non-nosocomial urinary tract infections?
answer
Escherichia coli
question
What biomedical test is used to distinguish between the Enterbacteriaceae and the Pasteurellaceae?
answer
oxidase test
question
Which of the following pairs is MISMATCHED?
answer
nonpathogenic Enterobacteriaceae; salmonella, shigella
question
A virulence factor common to many members of the Enterobacteriaceae which permits them to deliver harmful proteins directly to cells is
answer
type III secretion system
question
Salmonella and Shigella, both causes of diarrhea can be distinguished by which of the following tests?
answer
motility
question
What is the causative pathogen for bubonic and pneumonic plague?
answer
Yersinia pestic
question
Which of the following bacteria requires heme for its growth?
answer
Haemophilus
question
The small, oxidase positive nonmotile bacterium _______ is part of the normal microbiota of dogs, but bites can lead to infection in humans.
answer
Pasteurella
question
Which of the following statements concerning Pasteruella is FALSE?
answer
It is very resistant to a wide variety of antibacterial drugs including fluoroquinolones
question
Cat scratch disease is caused by
answer
Bartonella henselae
question
Bordetella pertussis cause disease by
answer
interfering with the action of the ciliated epithelial cells of the trachea.
question
Resistance of Pseudomonas to a wide range of antibacterial agents is partly due to its
answer
ability to metabolize many drugs
question
Which of the following diseases can be prevented by vaccination?
answer
typhoid fever
question
Legionnaires' disease is diagnosed by
answer
serological diagnostic procedures
question
What is the significance of the inefective body formed by Coxiella bacteria, intracellular parasites that cause a zoonosis in humans
answer
it is resistant stage similar to an endospore
question
What is the causative pathogen of Q fever?
answer
Coxiella burnetti
question
How do Prevotella differ from Bacterioides?
answer
Prevotella are sensitive to bile
question
Which of the following toxins produced by Bordetella pertussis results in the accumulation of excess mucus in the trachea
answer
both pertussis toxin and adenylate cyclase toxin
question
Hemolytic uremic syndrome is caused by
answer
Escherichia coli O157:H7
question
A cystic fibrosis patient develops a sever respiratory infection that resists treatment with standard antibiotics. A specimen from the lungs is greenish in color and contains aerobic motile Gram-negative bacilli. The patient is probably infected with
answer
Pseudomonas aeruginosa
question
What is the characteristic lesion of Yersinia pestis
answer
a bubo
question
What is the antimicrobial agent of choice for treating bacteroides infections?
answer
metronidazole
question
Important members of the intestinal microbiota are strictly anaerobic
answer
Bacteroides
question
How is pneumonic plague transmitted?
answer
inhalation of respiratory aerosols from a person infected with Yersinia pestis
question
A lesion called ____ is a characteristic of an infection with Haemophilus ducreyi
answer
a chancroid or soft chancre
question
urinary tract infections with ________ are frequently complicated by the formation of kidney stones.
answer
Proteus mirabilis
question
Infection with _______ usually produces acute upper respiratory disease but may cause meningitis in infants 3-18 months old.
answer
Haemophilus influenzae
question
Undiagnosed or untreated infections with Neisseria gonorrhoeae can progress to
answer
pelvic inflammatory disease
question
Which of the following is the result of inhalation of aerosols of fresh water containing a bacteria parasite of protozoa
answer
Legionnaire's disease
question
Which of the following disease is transmitted by the bite of human body lice?
answer
trench fever
question
Inhaling aerosols of dried bodily fluids from infected animals may result in
answer
both tularmia and Q fever
question
Humans infected with Brucella species develop ______ charcterized by fever, chills, sweating, muscle aches, and headache.
answer
undulant fever
question
Aerobic bacteria in the genus _____ are important environmental decomposers, able to digest herbicide like Agent Orange and polychlorinated biphenyls.
answer
Burkholdeira
question
T/F Serratia marcescens can be identifies by its distinctive blue-green pigment procyanin.
answer
FALSE
question
T/F Humans are the sole hosts of Salmonella enterica subtype Typhi
answer
TRUE
question
T/F Lipid A causes disseminated intravenous coagulation
answer
TRUE
question
T/F Enterobacteriaceae are rarely pathogenic
answer
FALSE
question
T/F Gonococcal infections result in lifelong immunity against Neisseria gonorrhoeae
answer
FALSE
question
T/F After a week of asymptomatic infection with Bordatella pertussis the patient has cold-like symptoms for a week or two followed by a period of sever paroxymal episodes of coughing that leave the patient anoxic and fatigued.
answer
TRUE
question
T/F Shiga toxin kills cells by preventing protein synthesis
answer
TRUE
question
T/F MacConkey agar is selective for Haemophilus influenzae
answer
FALSE
question
T/F Haemophilus ducreyi is transmitted by sexual contact
answer
TRUE
question
T/F Pseudomonas aeruginosa is a true pathogen with a long list of virulence factors
answer
FALSE
question
T/F Coxiella burnetii is transmitted to humans mainly via the bite of infected tick vectors.
answer
FALSE
question
T/F Neisseria meningitidis is able to survive inside macrophages and be transported throughout the body in them
answer
TRUE
question
Coliforms are distinguished from noncoliforms by their ability to ferment ______
answer
lactose
question
Neisseria is distinguished from many other Gram-negative pathogens by being _______ positive.
answer
oxidase
question
Because of the existance of _____ carriers, the eradications of meningococcal disease is unlikely.
answer
asymptomatic
question
An effective vaccine is available to prevent _______
answer
typhoid
question
Unlike other Gram-negative opportunistic bacilli, bacteroides are _____ anaerobes
answer
strict
question
When a UTI spreads to the kidneys it is called
answer
pyelonephritis
question
The pleomorphic bacterium ____ is an intracellular parasite that can lead to respiratory disease when inhaled in aerosols from freshwater sources .
answer
Legionella
question
Pneumonia caused by Klebsiella pneumoniae often involves the destruction of _____ and the production of bloody sputum
answer
alveoli
question
The true pathogen _______________ is a noncoliform, nonmotile, oxidase-negative member of the Enterobacteriaceae that does not produce hydrogen sulfide
answer
Shigella
question
Members of the Enterobacteriaceae produce toxins known as
answer
siderophores
question
Of the three diseases caused by persinia pestis, only _____ plague is communicable between humans
answer
pneumonic
question
Cat scratch disease is caused by Bartonella _____
answer
henselae
question
The zoonosis _____ can be acquired by humans in a variety of ways, including insect bites and ingestion of infected animals.
answer
tulameria
question
Bordatella pertusis produces _____ toxin which disrupts blood supply to respiratory tissues
answer
dermonecrotic
question
People can reduce the chances of contracting rabbit fever by avoiding rabbits, muskrats, and ____
answer
ticks.