Micro Bio Chp 20 Exam 4
Strains of Neisseria app. need which of the following structural features to be pathogenic?
a capsule, fimbriae and an LOS
Lipid A causes which of the following symptoms?
fever and disseminated intravascular coagulation (DIC)
Neisseria gonaorrhoeae infection in men is
an acute painful infection with pus discharge
Which of the following statements about Neisseria gonorrhoeae is FALSE?
the gonococci induce lasting immunity
Among the areas of the female genital tract which of the following is NOT colonized by Neisseria gonorrhoeae?
The Major damage caused by Neisseria meningitides is a result of
the release of the lipid A component of lipooligosaccharide (LOS) into the tissues, triggering serious symptoms.
Which of the following is diagnostic for Neisseria meningitides?
the presence of Gram-negative diplococci in phagocytes of the central nervous system
Members of the Enterobacteriaceae can be distinguished from each other by
both motility and the ability to ferment lactose
What virulence factors do all proteobacteria share?
Which of the following statements regarding Neisseria meningitidis is FALSE?
There are vaccines available to prevent infection with all strains
A lung specimen from a pneumonia patient contains Gram-negative bacilli. Laboratory test results on the bacteria show they are nonmotile cloakrooms with a thick capsule. Which pathogen is the likely cause of the pneumonia?
which of the following coliforms is the most common cause of non-nosocomial urinary tract infections?
Serratia is a coliform that
produces red pigment when grown at room temperature
Which of the following pairs is MISMATCHED?
nonpathogenic Enterobacteriacease; Salmonella, Shigella
Several cases of non bloody diarrhea with nausea, fever and abdominal pain have occurred among a number of people who ate at the same restaurant. Public health officers find a food sample containing motile noncoliform, Gram-negative bacteria capable of metabolizing glucose. the "food poisoning" resulted from contamination with
Shigellosis can be differentiated from salmonellosis by
the presence of nonmotile noncoliforms in bloody diarrhea
What is the causative pathogen for bubonic and pneumonic plague?
Which of the following bacteria requires heme for its growth?
A young woman has a pelvic infection. A specimen contains bacilli that are bile salt tolerant, as shown by black growth on a bile-esculin agar plate. Her infection is likely caused by
Which of the following statements concerning Pasteurella is FALSE?
It is very resistant to a wide variety of antibacterial drugs including fluorogquinolones
Cat scratch disease is caused by
Bordetella pertussis causes disease by
interfering with the action of the ciliated epithelial cells of the trachea
Resistance of Pseudomonas to a wide range of antibacterial agents is partly due to its
ability to form biofilms
Which of the following diseases can be prevented by vaccination?
Legionnairs' disease is diagnosed by
fluorescent antibody or other serological diagnostic procedures
Which of the following statements regarding Coxiella is TRUE?
It produces an infective body similar in structure and function to Gram-positive endospores
What is the causative pathogen of Q fever?
How do Prevotella differ from Bacteroides?
Prevotella are sensitive to bile
Which of the following toxins produced by Bordetella pertussis results in the accumulation of excess mucus in the trachea?
both pertussis toxin and adenylate cyclase toxin
Hemolytic uremic syndrome is caused by
Escherichia coli 0157:H7.
A cystic fibrosis patient develops a severe 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
What is the characteristic lesion of Yersinia pestis?
What is the antimicrobial agent of choice for treating Bacteroides infections?
What metabolic characteristic distinguishes Enterobacteriaceae from Pasteurellaceae?
Pasteurellaceae are oxidase positive
This growth pattern is characteristic of which organism?
How is pneumonic plague transmitted?
inhalation of respiratory aerosols from a person infected with Yersinia pestis
A lesion called _____ is characteristic of infection with Haemophilus ducreyi.
a chancroid or soft chancre
Urinary tract infections with _____ are frequently complicated by the formation of kidney stones.
Infection with ______ usually produces acute upper respiratory disease but may cause meningitis in infants 3-18 months old.
Undiagnosed or untreated infections with Neisseria gonorrhoeae in can progress to
pelvic inflammatory disease (PID)
Which of the following is the result of inhalation of aerosols of fresh water containing a bacterial parasite of protozoa?
Which of the following diseases is transmitted by the bite of human body lice?
Inhalation of dried bodily fluids of infected animals may result in
tularemia, brucellosis, and Q fever
The zoonotic infection _____ in humans is characterized by fluctuating fever and chills, sweating myalgia, and headache.
Which of the following bacteria can metabolize a large range of organic compounds and is a frequent nosocomial pathogen of cystic fibrosis patients?
(there is no abnormal coloration of the mucus in these patients)
Coliforms are distinguished from noncoliforms by their ability to ferment (glucose/ citrate/ lactose).
Neisseria is distinguished from many other Gram-negative pathogens by being (catalase/ oxidase/ dismutase) positive.
Because of the existence of (acute/ symptomatic/ asymptomatic) carriers, the eradication of meningococcal disease is unlikely.
Pseudomonas aeruginoas is an opportunistic pathogen because it is not (anaerobic/ invasive/ virulent).
Unlike other Gram-negative opportunistic bacilli, Bacteroides are (aerotolerant/ faculative/ obligate) anaerobes.
Strains of the same species of enteric bacteria are identified by their (H/ K/ O) antigens, components of the outer membrane.
The pleomorphic bacterium (Coxiella/ Legionella/ Francisella) is an intracellular parasite that can lead to respiratory disease
Pneumonia caused by Klebsiella pneumoniae often involves the destruction of (alveoli/ macrophages/ epithelium) and the production of bloody sputum.
The true pathogen (Salmonella/ Shigella/ Yersinia) is a noncoliform, nonmotile, oxidase-negative member of the Enterobacteriaceae that does not produce hydrogen sulfide.
Scientists have identified over 2000 unique serotypes of Salmonella, but DNA analysis indicates that they belong to a single species: S. (enterica/ typhi/ paratyphi).
Of the three disease caused by Yersinia pestis, only (bubonic/ black/ pneumonic) plague is communicable between humans.
Cat scratch disease is caused by Bartonella (bacillifromis/ henselae/ quintana).
The zoonosis (brucellosis/ bartonellosis/ tularemia) can be acquired by humans in a variety of ways, including insect bites and ingestion of infected animals.
Dermonecrotic toxin is produced during (pertussis/ Legionellosis/ shigellosis) and causes localized constriction and hemorrhage of blood vessels, resulting in cell death and tissue destruction.
People can reduce the chances of contracting rabbit fever by avoiding rabbits, muskrats, and (fleas/ lice/ ticks).