Which of the following bacteria divide by "snapping division" in which daughter cells remain attached in characteristic V-shapes?
A. staphylococci
B. enterococci
C. Corynebacterium
D. Listeria
E. Mycobacterium
Answer: C
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Reactive oxygen intermediates and reactive nitrogen intermediates produced by phagocytic cells are effective in killing invading microorganisms.
Answer the following statement true (T) or false (F)
Two weeks following a hiking trip in which several ticks were noticed and numerous mosquitoes were biting, a 25-year-old man notices a rash shaped like a red ring on the back of his thigh. He was not concerned because he had no other symptoms. Three months later he noticed significant pain in his elbows and his knees. What is the most likely cause of his illness?
A. Ehrlichiosis B. Rocky Mountain Spotted Fever C. West Nile encephalitis D. Lyme disease
What do we call the large, conspicuous green organisms pictured in this tide pool?
1.sea stars
2.chitons
3.limpets
4.anemones
Johne's disease, that primarily affects the small intestine of ruminants, is caused by:
A. Mycobacterium tuberculosis B. Mycobacterium avium subspecies paratuberculosis C. Mycobacterium bovis D. Mycobacterium bacteremicum