Bacteria:
Self-Assessment Questions

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1) What is the physichochemical basis of the Gram stain?
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2) What are the Gram-positive cocci of medical importance?
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3) What is the drug target for penicillins?
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4) How does antibiotic resistance occur in bacteria?
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5) What common media are used to cultivate bacteria of medical importance?
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6) Are the following are true or false:

(a) Chlamydia are obligate intracellular parasites.
True False

(b) Bacteria replicate by binary fusion.
True False

(c) Mycoplasmas possess a peptidoglycan cell wall.
True False

(d) Pseudomonads are Gram negative.
True False

(e) Bacteria of medical importance are only transmitted by direct contact between humans.
True False

7) What antibiotics work by inhibiting DNA gyrases?
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8) What are the differences between Mycoplasmas and Chlamydiae?
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9) Are bacteria in a specimen of urine always indicative of infection?
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10) By what mechanisms can bacteria transfer antibiotic-resistance genes?
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DISCLAIMER          © Department of Microbiology and Immunology, 1996.