The most commonly reported sexually transmitted disease in the United States is caused by the bacterium ____.
A) Mycoplasma genitalium
B) Chlamydia trachomatis
C) Chlamydophila proctitis
D) Ureaplasma urealyticum
Ans: B) Chlamydia trachomatis
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What kind of symbiosis occurs between bioluminescent bacteria and its host?
a. Commensalism b. Mutualistic c. None of these choices d. Parasitism
A decrease in pressure within an arteriole will initiate a(n)
A) myogenic response. B) cardiac and venous baroreceptor reflex. C) arterial baroreceptor reflex. D) active hyperemia. E) sinus arrhythmia
Mantled howler monkeys have been found to obtain most of their food from relatively rare trees, even though finding these trees takes much longer than finding common trees. Nutritional analyses of both rare and common trees found that the rare trees tended to be higher in protein and water, while the common trees tended to be higher in crude fiber and plant secondary compounds. What process would maintain this behavior in mantled howler monkey populations?
A. habituation B. imprinting C. natural selection D. sexual selection E. visual communication
How often must the competency of laboratory staff be evaluated
A. After 6 months of employment and annually thereafter B. Anually C. Every three months for the 1st year and anually thereafter D. in the first three months after hire