Which of the following groups of organisms are recognized as "retroviruses?"
a) Bacteriophages
b) Papillomaviruses
c) Herpesviruses
d) Adenoviruses
e) Human Immunosupression Viruses
Answer: e) Human Immunosupression Viruses
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What are some of the changing things in our current world that the author claims we are not well adapted to yet?
A. Computer screens B. Junk food C. Sterile environments D. 24 hour schedules E. None of the above (A-D) F. Some of the above (A-D)
This phylum of vascular, seed-bearing plants is limited to one living species. That species is a
deciduous tree with fan-shaped leaves. It has separate male and female plants, and the males are often planted in cities because of their resistance to pollution, insects, and disease.
a. Cycadophyta b. Anthophyta c. Gnetophyta d. Coniferophyta e. Ginkgophyta
Which of the following is thought to be most closely related to the anthropoids?
a. lemurs b. galagos c. lorises d. tarsiers e. marsupials
Fimbriae and pili differ in that
A) there are only one or two pili per cell. B) pili are used for motility. C) pili are used to transfer DNA. D) pili are used for transfer of DNA and motility. E) pili are used for attachment to surfaces.