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Pre-Test
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1
Bacteria are responsible for
A)cycling minerals within the ecosystem.
B)fixing atmospheric nitrogen.
C)deadly diseases.
D)All of the above
2
The basic structure of a virus contains
A)a nucleic acid.
B)a cell wall.
C)a protein coat.
D)Both 1 and 3
3
A major difference between prokaryotic and eukaryotic cells is that
A)most prokaryotes lack a cell wall, while most eukaryotes have one.
B)all prokaryotes lack a nucleus, while most eukaryotes have one.
C)all prokaryotes lack a nucleus, while all eukaryotes have one.
D)only the prokaryotes can reproduce asexually.
E)Both 1 and 4
4
At the end of conjugation, both of the cells involved
A)form endospores.
B)perish.
C)develop organelles.
D)have a copy of the plasmid DNA.
E)are able to degrade most antibiotics.
5
Of the three possibilities for the origin of life on this planet, the ________________ explanation[s] is/are the one[s] that can be tested scientifically.
A)extraterrestrial origin
B)special creation
C)evolution
D)Both 1 and 3
E)Both 2 and 3





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