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

Biology & Microbiology

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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

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology