Glencoe Biology

Chapter 18: Bacteria and Viruses

Standardized Test Practice-English

1
Which structures are proteins that help the cell attach to surfaces?
A)flagella
B)ribosomes
C)plasmids
D)pilli
2
Archaebacteria called ____ live in very salty conditions.
A)thermoacidophiles
B)halophiles
C)sodium absorbers
D)anaerobic bacteria
3
Which structure here consists of a layer of polysaccharides around the cell wall?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078695104/383920/ed.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (16.0K)</a>


A)capsule
B)ribosomes
C)plasmid
D)flagella
4
What is a significant difference between eubacteria and archaebacteria?
A)eubacteria inhabit harsher environments
B)presence of nucleus in archaebacteria
C)peptidoglycan in cell walls of eubacteria
D)archaebacteria photosynthetic
5
Which of these structures pertain to prokaryotic genetic material?
A)capsule and pili
B)nucleoid and plasmid
C)capsid and bacteriophage
D)membrane and pili
6
What process is shown here?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078695104/383920/ef.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (11.0K)</a>


A)sexual reproduction
B)zygote formation
C)binary fission
D)singular fusion
7
How do chemotrophs differ from other autotrophs?
A)break down hydrogen sulfide
B)utilize more light reactions
C)prevent nitrogen cycling
D)contain more chlorophyll
8
What results from the process shown here?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078695104/383920/ef.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (11.0K)</a>


A)genetically different cells
B)genetically identical cells
C)two cells lacking cell walls
D)two cells lacking cytoplasm
9
A ____ is a nonliving strand of genetic material within a protein coat.
A)archaebacteria
B)bacterial cell
C)virus
D)nucleic acid
10
The outer protein layer of viruses is called the ____.
A)capsid
B)plasmid
C)flagella
D)nuclear membrane
11
Viruses with RNA and a complex replication cycle are called ____.
A)archaic viruses
B)capsids
C)bacteriophages
D)retroviruses
12
This virus is responsible for causing ____.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078695104/383920/eg.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (8.0K)</a>


A)brain shrinkage
B)flu
C)AIDS
D)common cold
13
One theory about the origin of viruses suggests they might have come from ____ in cells.
A)membranes
B)genes
C)vacuoles
D)bacteria
14
Which of these is a component of the lytic cycle?
A)binary fusion occurs
B)virus becomes a bacteria
C)viral genetic material enters cell
D)citric acid is formed
15
How do viruses replicate?
A)enter cytoplasm of host cells
B)divide through binary fusion
C)undergo meiosis
D)makes genetic proteins
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe