Med bac test 3

Rickettsia rickettsii

Mycobacterium leprae

Coxiella burnetii

Mycoplasma pneumoniae

Borrelia burgdorferi

Clostridium difficile

Clostridium perfringes

Borrelia recurrensis

Treponema pallidum

Pseudomonas aeruginosa

This bacterium requires sterols for growth.
a. Mycobacterium leprae
b. Coxiella burnetii
c. Mycoplasma pneumoniae
d. Clostridium difficile

Select the incorrect statement about Mycobacterium?
a. The organism surrounds itself with unique acid waxes, long chanined branched hydrocarbons.
b. They grow extremely slowly, with a generation time of 13 hours minimum.
c. They produce endospores so they are resistant to chemicals and dryness.
d. Neither Gram-positive nor Gram-negative.

A person can have a positive tuberculin skin test because...
a. she has tubersculosis
b. she has been vaccinated
c. she had tuberculosis
d. a and b
e. a, b, and c

How is TB transmitted?
a. sharing food or drink
b. person to person through the air
c. sharing toothbrushes
d. kissing

Which of the following pairs is mismatched?
a. Pseudomonas- Gram negative rod
b. Mycoplasma- Gram negative cocci
c. Clostridium- Gram positive rod
d. Helicobacter- Gram negative rod

A diagnosis of Helicobacter is confirmed by the invasive tests. Which of the following tests is NOT an invasive test?
a. histology
b. urease test
c. microbial culture
d. stool antigen test

Causes a disease characterized by 3 stages of the following.
-Primary, in which the organism is localized to a chancre or skin lesion
-Secondary, in which the organism disseminates to distant sites
-and Tertiary, in which the immune response to the organism leads to destruction of the tissue
a. Borrelia burgdorferi
b. Coxiella burnetti
c. Rickettsia rickettsi
d. Treponema pallidum

Infection results in the formation of a characteristic expanding lesion called erythema migrans.
a. Borrelia burgdorferi
b. Rickettsia rickettsii
c. Coxiella burnetii
d. Treponema pallidum

This organism produces 8 immunologically distinct neurotoxins. Human cases mostly with type A and B and occasionally type E, which occurs in fish products. One microgram is sufficient to kill a large family and 0.4 kg is enough to kill everyone on the earth.
a. Clostridium tetani
b. Clostridium botulinum
c. Clostridium difficile
d. Clostridium perfringens

Which of the following pairs is mismatched?
a. Legionella- monotrichous flagella
b. Helicobacter- iophotrchous flagella
c. Borrelia- peritrichous
d. Pseudomonas- polar flagella

Which of the following can be transferred from an infected mother to her fetus across the placenta?
a. Borrelia burgdorferi
b. Coxiella burnetii
c. Treponema pallidum
d. Rickettsia rickettsii

Which of the following statements about viruses is NOT true?
a. viruses are filterable agents
b. obligate intracellular parasites
c. viral genome may be RNA or DNA, but not both
d. Viruses are the smallest cells

Which of the following is readily treated with penicillin?
a. Lyme disease
b. Syphilis
c. Tuberculosis
d. Pseudomembranous colitis

Rocky Mountain Spotted Fever is transmitted by
a. the respiratory route
b. the fecal-oral route
c. tick bites
d. person to person contact

Which of the following is not caused by a bacterium?
a. poliomyelitis
b. typhus
c. relapsing fever
d. q gever

T/F
The sprochete Rickettsiae are obligate intracellular bacteria and have axial filaments.

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Some viruses are larger than some bacteria.

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Nonenveloped, or naked, viruses have no capsid.

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Ingestion of aspirin or other nonsteroidal anti-inflammatory medications (NSAIDs) can lead to doudenal ulceration.

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Most RNA viruses replicate in the nucleus.

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Legionnaires disease is commonly caused by bacteria in showerheads and air conditioning units.

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Some small viruses have overlapping genes.

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Nearly all persons coinfected with HIV and M. tuberculosis will eventually develop active TB unless the HIV or the tuberculous infection is effectively treated.

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A proton pump inhibitor (PPI) lowers the gastric pH by clocking the enzymes in the wall of the stomach that procues acid.

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TB is an acient disease that has plagued humans for thousands of years.

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Botulism and tetanus toxins are cytotoxins.

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The purpose of Fecal Microbiota Transplant (FMT) is to replace good bacteria that has been killed or suppressed, usually by the use of antibiotics, causing bad bacteria to over-populate the colon.

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Pseudomonas aeruginosa produce both pyocyanin and pyoverdin.

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The genome of Borrelia burgdorferri is remarkably complex, consisting of a small linear chromosome and about 22 linear and circular plasmids, depending on the particular strain.

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Doxycycline is the B-lactam antibiotic class and is frequently used to treat Lyme disease.