Biology: The Dynamics of Life, California Edition

Section 1: Viruses

Viruses

1.
Which of these is an example of a helical virus?
A)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078665809/181784/ch18_0_a.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (13.0K)</a>
B)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078665809/181784/ch18_0_b.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (15.0K)</a>
C)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078665809/181784/ch18_0_c.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (9.0K)</a>
D)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078665809/181784/ch18_0_d.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (14.0K)</a>
2.
Which of these statements is true?
A)Every virus has its own specifically shaped attachment protein.
B)In most situations, polio viruses infect only brain cells.
C)A virus can replicate at any time in any location.
D)A T4 phage can only infect a human cell.
3.
Which of these is NOT a step in the lytic cycle?
A)assembly
B)replication
C)lysis and release
D)provirus formation
4.
What is the virus responsible for the common cold?
A)rabies
B)Escherichia coli
C)poliovirus
D)adenovirus
5.
One reason that smallpox has been successfully eradicated is because __________.
A)it only infects humans
B)it only infects birds
C)it never infects humans
D)it always infects birds and horses
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