question
Which of the following is a true statement about Clostridium tetanus?
a. The exotoxin produced by this organism will cause flaccid paralysis once a person is infected.
b. The endospores that this organism produces need an anaerobic environment to germinate and grow.
c. The organism reproduces rapidly in wounds and produces foul-smelling, gaseous waste products.
d. Clostridium tetanus is an opportunistic pathogen.
a. The exotoxin produced by this organism will cause flaccid paralysis once a person is infected.
b. The endospores that this organism produces need an anaerobic environment to germinate and grow.
c. The organism reproduces rapidly in wounds and produces foul-smelling, gaseous waste products.
d. Clostridium tetanus is an opportunistic pathogen.
answer
b. The endospores that this organism produces need an anaerobic environment to germinate and grow.
question
Which of the following tests can rapidly distinguish between species of Staphylococcus and Streptococcus?
a. Acid-fast staining
b. Observing morphology under the microscope
c. Gram staining
d. Catalase test
a. Acid-fast staining
b. Observing morphology under the microscope
c. Gram staining
d. Catalase test
answer
d. Catalase test
question
Which of the following is a virulence factor found in Streptococcus?
a. Coagulase
b. Exfoliative toxin
c. Streptokinase
d. Enterotoxin
a. Coagulase
b. Exfoliative toxin
c. Streptokinase
d. Enterotoxin
answer
b. Exfoliative toxin
question
Toxic shock syndrome occurs in both males and females.
a. True
b. False
a. True
b. False
answer
a. True
question
Which of the following is not a vaccine-preventable disease?
a. Tuberculosis
b. Tetanus
c. Botulism
d. Pneumococcal pneumonia
a. Tuberculosis
b. Tetanus
c. Botulism
d. Pneumococcal pneumonia
answer
c. Botulism
question
Which of the following antimicrobial drugs would not be the best option to treat a patient with walking pneumonia?
a. Azithromycin
b. Levofloxacin
c. Penicillin
d. Erythromycin
a. Azithromycin
b. Levofloxacin
c. Penicillin
d. Erythromycin
answer
c. Penicillin
question
Organisms that belong to the genus _______are characterized as acid-fast organisms.
answer
Nocardia, Mycobacterium
question
Diphtheria is diagnosed with a(n)__________
answer
Elek test
question
Mycobacterium tuberculosis and Mycobacterium leprae are equally infectious.
a. True
b. False
a. True
b. False
answer
b. False
question
Propionibacterium typically grows in the urinary tract of humans.
a. True
b. False
a. True
b. False
answer
b. False
question
Clostridium botulinum releases an exotoxin (neurotoxin) that, when ingested, may cause _________paralysis.
answer
flaccid
question
__________ is one of the more common organisms to cause food poisoning.
answer
Staphylococcus aureus
question
Which of the following forms of anthrax is the most common type found in humans?
a. Cutaneous anthrax
b. Inhalational anthrax
c. Gastrointestinal anthrax
d. All forms are equally common in humans.
a. Cutaneous anthrax
b. Inhalational anthrax
c. Gastrointestinal anthrax
d. All forms are equally common in humans.
answer
a. Cutaneous anthrax
question
After Gram staining, Pneumococci are identified by the __________reaction.
answer
quelling
question
__________ streptococci normally colonize the lower gastrointestinal, genital, and urinary tracts.
a. Group D
b. Group B
c. Group C
d. Group A
a. Group D
b. Group B
c. Group C
d. Group A
answer
b. Group B
question
The viridans streptococci, a group in the alpha-hemolytic streptococci, include members that inhabit which of the following areas in the human body?
a. Genital and urinary tracts
b. Skin and lungs
c. Skin and pharynx
d. Mouth and pharynx
a. Genital and urinary tracts
b. Skin and lungs
c. Skin and pharynx
d. Mouth and pharynx
answer
d. Mouth and pharynx
question
The genus Corynebacterium reproduces via a special form of binary fission called _________.
answer
Snapping division
question
The cell wall found in the genus Mycobacterium contains _________which makes them resistant to Gram staining.
answer
Mycolic acid
question
The genus ________is the most common pathogen to cause acne.
answer
Propionibacterium
question
The genus _________may include pathogenic species that are responsible for causing diseases such as botulism, gas gangrene, and tetanus.
answer
Clostridium
question
You isolated an organism from a patient's wound. The organism appears purple after Gram staining and is catalase positive and coagulase positive. Which of the following microbes did you most likely isolate?
a. Propionibacterium acne
b. Streptococcus pyogenes
c. Staphylococcus aureus
d. Staphylococcus epidermidis
a. Propionibacterium acne
b. Streptococcus pyogenes
c. Staphylococcus aureus
d. Staphylococcus epidermidis
answer
c. Staphylococcus aureus
question
Why have cases of TSS declined since the 1980s?
a. The absorbency of tampons has been reduced.
b. All of the answers are correct.
c. Every tampon package must include educational information about TSS.
d. Superabsorbent tampons have been removed from the market.
a. The absorbency of tampons has been reduced.
b. All of the answers are correct.
c. Every tampon package must include educational information about TSS.
d. Superabsorbent tampons have been removed from the market.
answer
b. All of the answers are correct.
question
Which of the following antimicrobial agents has become the drug of choice for treating MRSA infections?
a. Isoniazid
b. Penicillin
c. Methicillin
d. Vancomycin
a. Isoniazid
b. Penicillin
c. Methicillin
d. Vancomycin
answer
d. Vancomycin
question
Which of the following antimicrobials would not be a good treatment choice to treat a patient diagnosed with walking pneumonia?
a. Penicillin
b. Erythromycin
c. Clarithromycin
d. Levofloxacin
a. Penicillin
b. Erythromycin
c. Clarithromycin
d. Levofloxacin
answer
a. Penicillin
question
Which of the following genera cannot be stained with the Gram stain?
a. Nocardia
b. Corynebacterium
c. Actinomyces
d. Bacillus
a. Nocardia
b. Corynebacterium
c. Actinomyces
d. Bacillus
answer
a. Nocardia
question
Which of the following diseases cannot be prevented with vaccination?
a. Tuberculosis
b. Anthrax
c. Tetanus
d. Walking pneumonia
a. Tuberculosis
b. Anthrax
c. Tetanus
d. Walking pneumonia
answer
d. Walking pneumonia
question
Who would most likely develop a C. difficile infection?
a. A healthy, young adult
b. A farmer
c. A patient that has been taking broad-spectrum antimicrobial drugs
d. A person who just ate potato salad that has been stored at room temperature for two hours
a. A healthy, young adult
b. A farmer
c. A patient that has been taking broad-spectrum antimicrobial drugs
d. A person who just ate potato salad that has been stored at room temperature for two hours
answer
c. A patient that has been taking broad-spectrum antimicrobial drugs
question
The genus Clostridium is the causative agent for diphtheria.
a. True
b. False
a. True
b. False
answer
b. False
question
Mycobacterium leprae is highly virulent and easy transmissible by contact with contaminated body fluids.
a. True
b. False
a. True
b. False
answer
b. False
question
A pregnant woman should avoid deli meats and unpasteurized cheeses due to possible contamination with Listeria monocytogenes.
a. True
b. False
a. True
b. False
answer
a. True
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