Biology (Mader), 10th Edition

Chapter 20: Viruses, Bacteria, and Archaea

Pre-Test

1
The study of viruses has contributed much to our understanding of _____.
A)disease
B)genetics
C)the characteristics of living things
D)All of the above
2
Viruses always have at least _____.
A)a nucleus
B)a cell wall
C)an inner core of nucleic acid
D)None of these
3
Which of the following is not characteristic of a prokaryote?
A)Cell wall
B)DNA
C)Nucleus
D)Plasma membrane
4
Prokaryotes reproduce _____.
A)sexually
B)by binary fission
C)by conjugation
D)All of these
5
The primary source of genetic variability in prokaryotes is _____.
A)mutations
B)transduction
C)conjugation
D)transformation
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