Transcript The Biotechnology Century and Its Workforce

Active Lecture
Questions
Chapter 11
The Prokaryotes:
Domains Bacteria
and Archaea
Copyright © 2010 Pearson Education, Inc.
If you Gram-stained the bacteria that live
in the human intestine, you would expect
to find mostly
a.
b.
c.
d.
e.
gram-positive cocci.
gram-negative rods.
gram-positive, endospore-forming rods.
gram-negative, nitrogen-fixing bacteria.
all of the above
Which of the following does not belong
with the others?
a.
b.
c.
d.
e.
Enterobacteriales
Lactobacillales
Legionellales
Pasteurellales
Vibrionales
Pathogenic bacteria can be
a.
b.
c.
d.
e.
motile.
rods.
cocci.
anaerobic.
all of the above
Which of the following is an intracellular
parasite?
a.
b.
c.
d.
e.
Rickettsia
Mycobacterium
Bacillus
Staphylococcus
Streptococcus
Which of the following terms is the most
specific?
a.
b.
c.
d.
e.
bacillus
Bacillus
gram-positive
endospore-forming rods and cocci
anaerobic
Which one of the following does not
belong with the others?
a.
b.
c.
d.
e.
Enterococcus
Lactobacillus
Staphylococcus
Streptococcus
all are grouped together
Which of the following pairs is
mismatched?
a. anaerobic endospore-forming gram-positive rods—
Clostridium
b. facultatively anaerobic gram-negative rods—
Escherichia
c. facultatively anaerobic gram-negative rods—Shigella
d. pleomorphic gram-positive rods—Corynebacterium
e. spirochete—Helicobacter
Spirillum is not classified as a spirochete
because spirochetes
a.
b.
c.
d.
e.
do not cause disease.
possess axial filaments.
possess flagella.
are prokaryotes.
none of the above
When Legionella was newly discovered,
it was classified with the pseudomonads
because
a.
b.
c.
d.
e.
it is a pathogen.
it is an aerobic gram-negative rod.
it is difficult to culture.
it is found in water.
none of the above
Cyanobacteria differ from purple and
green phototrophic bacteria because
cyanobacteria
a.
b.
c.
d.
e.
produce oxygen during photosynthesis.
do not require light.
use H2S as an electron donor.
have a membrane-enclosed nucleus.
all of the above
Which of the following is NOT a
characteristic of spirochetes?
a. Easily observed with brightfield
microscopy
b. Gram-negative
c. Difficult to culture in vitro
d. Helical shape
Streptococcus pyogenes belongs to the
a.
b.
c.
d.
Proteobacteria
Gram-positive bacteria
Gram-negative bacteria
Spirochetes
You have isolated a prokaryotic cell.
The first step in identification is
a.
b.
c.
d.
Endospore stain
Lactose fermentation
Gram stain
Flagella stain
Which of the following are commonly
found in the intestines of humans?
a.
b.
c.
d.
Gram-positive cocci
Facultatively anaerobic gram-negative rods
Aerobic helical bacteria
Gram-negative aerobic rods and cocci
The genus Pseudomonas consists of
organisms that are
a.
b.
c.
d.
Aerobic
Gram-positive rods
Gram-positive cocci
Nonmotile
The phylogenetic relationship in
proteobacteria is based on
a.
b.
c.
d.
rRNA studies
mRNA studies
DNA studies
tRNA studies
Blue-green algae are now called
a.
b.
c.
d.
Chlorobi
Chloroflexi
Campylobacter
Cyanobacteria
Elementary bodies are found in
a.
b.
c.
d.
E. coli
Streptococcus
Chlamydiae
Staphylococcus
A primary difference between
cyanobacteria and purple sulfur and
purple nonsulfur phototrophic bacteria is
a.
b.
c.
d.
Color
Cell wall type
Electron donor for carbon dioxide reduction
Energy source
Which genus of bacteria is responsible
for causing more infections in every area
of the human body?
a.
b.
c.
d.
Streptococcus
Neisseria
Staphylococcus
Salmonella
In a laboratory, Staphylococcus and
Streptococcus are easily differentiated by
their
a.
b.
c.
d.
Gram stain reaction
Growth in high salt concentrations
Ability to cause disease
Cell shape
Which of the following is NOT grampositive?
a.
b.
c.
d.
Treponema
Mycobacterium
Bacillus
Corynebacterium
Bartonella henselae causes
a.
b.
c.
d.
Ehrlichiosis
Cat-scratch disease
Rocky Mountain spotted fever
Crown gall
Which of these organisms is
gram-positive?
a.
b.
c.
d.
Pseudomonas
Salmonella
Streptococcus
Rickettsia
What should you do if you suspect a
patient has tuberculosis?
a.
b.
c.
d.
Check for motility
Perform an acid-fast stain
Perform a Gram stain
Look at a wet mount