MICROBIOLOGY OPENSTAX. QUESTIONS WITH CORRECT
ANSWERS
A bacterial chromosome is located in which of the following?
a.the nucleoid region
b.the nucleus
c.the thylakoids
d.the capsule - correct answer a.the nucleoid region
A bacterium possessing a tuft of flagella at one end of its cell is called
a.Lophotrichous
b.Peritrichous
c.Monotrichous
d.Amphitrichous - correct answer Lophotrichous
Acid-fast cell walls contain high concentrations of
a.peptidoglycan
b.teichoic acid
c.mycolic acid
d.pseudomurein - correct answer mycolic acid
All of the following are found in the cell walls of gram-positive bacteria EXCEPT __________.
a.teichoic acid
b.peptidoglycan
,c.lipoteichoic acid
d.lipid A - correct answer Lipid A
Bacteria divide by
a.binary fission
b.Mitosis
c.spore formation
d.Budding - correct answer Bynary fission
Chemotaxis refers to the ability of microorganisms to __________.
a.survive under adverse conditions
b.attach to solid surfaces
c.move in a wavelike motion
d.move toward or away from chemical stimuli - correct answer move toward or away from
chemical stimuli
Elementary bodies are found in the phylum
a.Chlamydiae
b.Chloroflexi
c.Planctomycetes
d.Bacteroidetes - correct answer Chlamydiae
Enteric bacteria would most likely be found in which environment?
a.warm, tropical soil
b.intestinal tract of an animal
c.human skin
,d.unpasteurized milk and apple juice - correct answer intestinal tract of an animal
In chloroplasts, chlorophyll is contained in flattened sacs called
a.Cisternae
b.Vacuoles
c.Cristae
d.Thylakoids - correct answer Thylakoids
Peptic ulcers in humans are commonly caused by members of the genus
a.Shigella
b.Enterobacter
c.Helicobacter
d.Salmonella - correct answer helicobacter
Rickettsias differ from chlamydias in that only rickettsias
a.form spores
b.are intracellular parasites
c.are Gram-negative
d.require an arthropod for transmission - correct answer require an arthropod for transmission
Spherical bacteria that divide and remain attached in chainlike patterns are called __________.
a.Staphylococci
b.Tetrads
c.Streptococci
d.Spirochetes - correct answer Streptococci
, The two domains of prokaryotes are
a.Bacteria and Protista
b.Archaea and Fungi
c.Bacteria and Archaea
d.Bacteria and Fungi - correct answer Bacteria and Archaea
What are the sizes of two subunits used to compose prokaryotic ribosomes?
a.30S + 50S
b.30S + 40S
c.20S + 50S
d.40S + 60S - correct answer 30S + 50S
Which is NOT true of the rickettsias?
a.They are classified as beta-proteobacteria
b.They are obligate intracellular parasites
c.They can cause human diseases often characterized by a rash
d.They are typically transmitted by insects and ticks - correct answer They are classified as beta-
proteobacteria
Which member of the gammaproteobacteria is a potential cause of pneumonia and can be
found in warm-water supply lines and air conditioning cooling towers?
a.Legionella
b.Klebsiella
c.Coxiella
d.Salmonella - correct answer Legionella
Which of the following genera is NOT a member of the phylum Actinobacteria?
ANSWERS
A bacterial chromosome is located in which of the following?
a.the nucleoid region
b.the nucleus
c.the thylakoids
d.the capsule - correct answer a.the nucleoid region
A bacterium possessing a tuft of flagella at one end of its cell is called
a.Lophotrichous
b.Peritrichous
c.Monotrichous
d.Amphitrichous - correct answer Lophotrichous
Acid-fast cell walls contain high concentrations of
a.peptidoglycan
b.teichoic acid
c.mycolic acid
d.pseudomurein - correct answer mycolic acid
All of the following are found in the cell walls of gram-positive bacteria EXCEPT __________.
a.teichoic acid
b.peptidoglycan
,c.lipoteichoic acid
d.lipid A - correct answer Lipid A
Bacteria divide by
a.binary fission
b.Mitosis
c.spore formation
d.Budding - correct answer Bynary fission
Chemotaxis refers to the ability of microorganisms to __________.
a.survive under adverse conditions
b.attach to solid surfaces
c.move in a wavelike motion
d.move toward or away from chemical stimuli - correct answer move toward or away from
chemical stimuli
Elementary bodies are found in the phylum
a.Chlamydiae
b.Chloroflexi
c.Planctomycetes
d.Bacteroidetes - correct answer Chlamydiae
Enteric bacteria would most likely be found in which environment?
a.warm, tropical soil
b.intestinal tract of an animal
c.human skin
,d.unpasteurized milk and apple juice - correct answer intestinal tract of an animal
In chloroplasts, chlorophyll is contained in flattened sacs called
a.Cisternae
b.Vacuoles
c.Cristae
d.Thylakoids - correct answer Thylakoids
Peptic ulcers in humans are commonly caused by members of the genus
a.Shigella
b.Enterobacter
c.Helicobacter
d.Salmonella - correct answer helicobacter
Rickettsias differ from chlamydias in that only rickettsias
a.form spores
b.are intracellular parasites
c.are Gram-negative
d.require an arthropod for transmission - correct answer require an arthropod for transmission
Spherical bacteria that divide and remain attached in chainlike patterns are called __________.
a.Staphylococci
b.Tetrads
c.Streptococci
d.Spirochetes - correct answer Streptococci
, The two domains of prokaryotes are
a.Bacteria and Protista
b.Archaea and Fungi
c.Bacteria and Archaea
d.Bacteria and Fungi - correct answer Bacteria and Archaea
What are the sizes of two subunits used to compose prokaryotic ribosomes?
a.30S + 50S
b.30S + 40S
c.20S + 50S
d.40S + 60S - correct answer 30S + 50S
Which is NOT true of the rickettsias?
a.They are classified as beta-proteobacteria
b.They are obligate intracellular parasites
c.They can cause human diseases often characterized by a rash
d.They are typically transmitted by insects and ticks - correct answer They are classified as beta-
proteobacteria
Which member of the gammaproteobacteria is a potential cause of pneumonia and can be
found in warm-water supply lines and air conditioning cooling towers?
a.Legionella
b.Klebsiella
c.Coxiella
d.Salmonella - correct answer Legionella
Which of the following genera is NOT a member of the phylum Actinobacteria?
