Micro Quiz 5/16
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| What are diptheroids? | Non- pathogenic Corynebacterium
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| Where are diptheroids normal flora? | Skin, respiratory tract, vagina, soil, water
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| What is the characteristic lesion of C. diphtheriae? | pseudomembrane- gray leathery web
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| What diseases does the DPT or DTaP immunize against? | A. Dipthera
B. Tetnus
c.Pertusis
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| What is the gram stain of Bacillus? | Gram pos bacilli with spores
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| Is Bacillus an aerobic or anaerobic genus? | Aerobic
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| What is the characteristic lesion of anaerobic infections? | Necrosis- dead tissue
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| Which specimens are likely to contain clinically significant anaerobes? | a sample aspirated with needle and syringe or pus from a deep wound with a foul odor.
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| Which specimens are unacceptable for anaerobic culture? | A. Swabs from surface wounds
B. Coughed up sputum and stomach contents
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| What is the gram stain of Clostridium? | Gram Pos Bacilli with Spores
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| Are Clostridium aerobic or anaerobic organisms? | anaerobic
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| Where are Clostridium normally found? | Soil, dust, water, intestines of humans and animals
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| What does Cl. tetani cause? | Lock jaw/ tetanus
neurotoxin causes painful muscle spasms
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| What are the characteristics of a wound likely to become infected by Cl. tetani? | A. Deep puncture
B. Spores or dirt in wound
C. Dead Tissue
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| What does Cl. perfringens cause? | ganggrene
causes swelling and tissue death, the organisms firments muscle sugars, produces gas and tears tissues apart
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| What does Cl. difficle cause? | botchulism
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| What is the Gram stain of Neisseria? | Gram negative diplococci
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| Where are Neisseria species normal flora? | Throat, sputum
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| What does a direct smear of urethral discharge that is positive for gonorrhea look like? | positive smear- intracellular gram negative diplococci
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| Modified Thayer Martin agar is designed to facilitate the recovery of which organisms? | A,gonococcus
B. Meningococcus
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| What does MTM use to select organisms? | Antibiotics- to prevent overgrowth by organisms often found in specimens
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| How should MTM media be inoculated? | In a Z
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| What must Neisseria have in the atmosphere to grow? | CO2
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| Give the name and a description of the disease caused by N. gonorrhoeae? | Gonorrhea- STD/STI with purulent discharge most common specimen- cervix in women and urethra in men
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| How is gonorrheal conjuctivitis in newborns prevented? | Crede Method- eyes of newborn are rinsed with 1% silver nitrate
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| Give the name and a description of the disease caused by N. meningitis? | Causes epidemic meningitis-purulent inflammation of the meninges
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