Cervical cancer can be caused by:
a. Chlamydia spp
b. human papillomavirus
c. herpes simplex virus
d. Neisseria gonorrhoeae
e. Trichomonas vaginalis
b
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The commercial livestock industry has significantly increased _______ levels in the atmosphere because of animal respiration.
a. carbon monoxide b. carbon dioxide c. calcium carbonate d. carbonic acid
A cell type that secretes skeletal support
elements and digests and transports food is indicated by a. A. b. B. c. C. d. D. e. E.
A pea plant with yellow peas is crossed with a pea plant that has green peas. The offspring include
both yellow-pea and green-pea plants. The original plant with yellow peas must, therefore, have what genotype? A. YY B. Yy C. yy D. It cannot be determined: YY or Yy E. It cannot be determined: Yy or yy
The prolonged low temperature exposure required for the germination of some seeds:a
is typical of coconuts. b. provides an alternative to the process of imbibition. c. prevents them from growing in flooded, anaerobic soils.
d. allows the seeds to conserve limited food stores. e. ensures that the seeds germinate in spring, rather than in fall.