question
It can produce coagulase.
answer
What is one virulence factor that differentiates Staphylococcus aureus from other species of staphylococci?
question
exfoliative toxin
answer
Which of the following staphylococcal virulence factors produce the signs and symptoms of scalded skin syndrome?
question
False
answer
T/F: Staphylococcus aureus food poisoning is long-lasting because ingested bacteria produce enterotoxins in the digestive system.
question
catalase enzyme
answer
The presence of ________ can be used to distinguish Staphylococcus from other Gram-positive cocci.
question
protein A
answer
Which of the following is an antiphagocytic factor of Staphylococcus?
question
they produce β-lactamase.
answer
Over 90% of Staphylococcus aureus isolates are penicillin-resistant. Why
question
True
answer
T/F: Staphylococcus aureus can produce a toxin that dissolves the desmosomes that hold the adjoining cytoplasmic membranes of cells together and causes the patient's skin cells to separate.
question
It is considered a common complication of pyoderma.
answer
Which of the following statements about "flesh-eating" streptococci is FALSE?
question
It produces protein A, which inhibits opsonization.
answer
Which of the following statements regarding Streptococcus pyogenes is FALSE?
question
scarlet fever or rheumatic fever.
answer
Untreated streptococcal pharyngitis may progress to
question
viridans streptococci
answer
Which of the following streptococci is associated with dental caries?
question
True
answer
T/F: Group A streptococci are considered more virulent if their cytoplasmic membrane contains M protein.
question
False
answer
T/F: Streptococcus pyogenes commonly causes streptococcal toxic shock syndrome in otherwise healthy people.
question
Lancefield antigen designations.
answer
Streptococci are frequently classified by:
question
they have hyaluronic acid capsules.
answer
How do group A streptococci camouflage themselves from white blood cells?
question
rheumatic fever
answer
Which of the following diseases is considered an autoimmune disease triggered by bacterial infection?
question
neonatal bacteremia, neonatal meningitis, and neonatal pneumonia
answer
Streptococcus agalactiae is associated with which of the following diseases?
question
the presence of a polysaccharide capsule
answer
What differentiates virulent strains of Streptococcus pneumoniae from nonvirulent strains?
question
capsule antigens.
answer
The Quellung reaction is a test to detect
question
Streptococcus pneumoniae.
answer
Otitis media may lead to dangerous meningitis in children due to infection with
question
scarlet fever
answer
Strep throat may progress to ________, characterized by a skin rash and a bright red swollen tongue.
question
Streptococcus pneumoniae
answer
Immunization for ________ may reduce the incidence of otitis media and sinusitis.
question
True
answer
T/F: The bacterium Streptococcus mutans has a major role in the development of dental plaque and caries.
question
can grow in the presence of bile salts.
answer
Enterococcus faecalis bacteria can be distinguished from other Gram-positive cocci because enterococci:
question
It is primarily a disease of humans.
answer
Which of the following statements about Bacillus anthracis is FALSE?
question
eschars.
answer
The skin lesions characteristic of cutaneous infections with Bacillus anthracis are
question
the black eschars it produces on human skin
answer
Anthrax, which means "charcoal" in Greek, derives its name from:
question
True
answer
T/F: The primary reservoir of anthrax is herbivores.
question
Clostridium botulinum
answer
Which of the following bacteria produce one of the most deadly bacterial toxins known?
question
Clostridium difficile
answer
Which of the following bacteria can cause life-threatening pseudomembranous colitis?
question
Its only source is from deep puncture wounds from rusty nails.
answer
Which of the following statements concerning tetanus is FALSE?
question
the smaller polypeptide of its toxin can block the release of inhibitory neurotransmitters by inhibitory neurons in the central nervous system.
answer
How does the toxin from Clostridium tetani produce its action?
question
Clostridium perfringens.
answer
Painful swelling and rapidly spreading subcutaneous tissue necrosis is characteristic of a wound infection by:
question
True
answer
T/F: Adult foodborne botulism can be prevented by thoroughly cooking food (minimum 80°C for 20 minutes) before it is eaten.
question
live within cells and thus avoid exposure to the immune system of its host.
answer
Listeria virulence is directly related to its ability to:
question
Listeria monocytogenes
answer
Eating food contaminated with ________ may result in meningitis in at-risk persons.
question
lack cell walls.
answer
Members of the genus Mycoplasma are pleomorphic and stain Gram-negative because they:
question
attaching to and ultimately killing the ciliated epithelial cells of the trachea.
answer
Mycoplasma pneumoniae causes respiratory disease by:
question
True
answer
T/F: The respiratory infection known as primary atypical pneumonia is caused by Mycoplasma pneumoniae.
question
Corynebacterium
answer
Which of the following bacteria divide by "snapping division" in which daughter cells remain attached in characteristic V-shapes?
question
Its growth on Loffler's medium is used for absolute diagnosis of the bacterium.
answer
Which of the following statements about diphtheria is FALSE?
question
False
answer
T/F: Mycobacterium tuberculosis is able to persist and be spread in aerosols due to its ability to produce endospores.
question
prevent fusion of lysosomes with vesicles.
answer
The pathogenicity of primary tuberculosis is due to the fact that the mycobacteria:
question
skin cells.
answer
Mycobacterium leprae primarily infects:
question
Mycobacterium avium-intracellulare
answer
An opportunistic pathogen frequently seen in AIDS patients, ________ spreads rapidly to various organs.
question
localized loss of the sense of touch
answer
Which of the following is a key diagnostic indicator of infection with Mycobacterium leprae
question
acne
answer
What is the most common disease caused by Propionibacterium?
question
Propionibacterium acnes
answer
Increased sebum secretion can fuel the overgrowth of the opportunistic pathogen ________ in its normal habitat, leading to disease.
question
Nocardia.
answer
Mycetoma, which is a painless long-lasting infection characterized by swelling, pus production, and draining sores, is commonly caused by
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