Four of the five answers are correct statements about materials in biogeochemical cycles. Select the exception
a. They pass from environmental reservoirs to living organisms.
b. They move slower than elements in living systems move.
c. They eventually move from living organisms back into environmental reservoirs.
d. They may include rocks and sediments, waters, and atmosphere reservoirs.
e. They are unidirectional, moving from the environment to living organisms.
e
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The starch production center within many algal cells is the
(a) nucleus. (b) cytoplasm. (c) stipe. (d) pyrenoid.
According to a 2003 study performed by Michelle Khan and her coworkers, the rate of cervical cancer appears to be
the greatest when women are ____.
a. positive for HPV 16 b. negative for HPV16 but positive for HPV18 c. negative for HPV16/18 but positive for other cancer-causing HPV d. negative for all cancer-causing HPV e. positive for HIV
Which two countries make up about 40 percent of the world’s population?
a. India and Russia b. Russia and the United States c. China and the United States d. China and India e. China and Russia
The position of a specific gene on a chromosome can be determined by:
a. preparing a karyotype. b. southern blotting. c. genomic hybridization. d. chromosome sorting. e. fluorescent in situ hybridization.