Microbiology 4 Test Questions With
Verified Answers
The difference in cell wall structure of Mycobacterium and Nocardia compared to the
typical gram-positive
bacterial cell wall structure is
A. the presence of more peptidoglycan.
B. the predominance of unique, waxy lipids.
C. the rapid decolorization during staining.
D. the presence of lipopolysaccharide.
E. All of these choices are correct. - Ans -B. the predominance of unique, waxy lipids.
Bacterial cells could have any of the following appendages, except
A. flagella.
B. cilia.
C. fimbriae.
D. periplasmic flagella (axial filaments).
E. sex pili. - Ans -cilia
Spirochetes have a twisting and flexing locomotion due to appendages called
A. flagella.
B. cilia.
C. fimbriae.
Spirochetes have a twisting and flexing locomotion due to appendages called
A. flagella.
1
B. cilia.
Page
,C. fimbriae.
D. periplasmic flagella (axial filaments).
E. sex pili. - Ans -D. periplasmic flagella (axial filaments).
The short, numerous appendages used by some bacterial cells for adhering to surfaces are
called
A. flagella.
B. cilia.
C. fimbriae.
D. periplasmic flagella (axial filaments).
E. sex pili. - Ans -fimbriae
The transfer of genes during bacterial conjugation involves rigid, tubular appendages called
A. flagella.
B. cilia.
C. fimbriae.
D. periplasmic flagella (axial filaments).
E. sex pili. - Ans -sex pili
All bacterial cells have
A. a chromosome.
B. fimbriae.
C. endospores.
D. capsules.
E. flagella. - Ans -a chromosome
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Page
, The term that refers to the presence of flagella all over the cell surface is
A. amphitrichous.
B. atrichous.
C. lophotrichous.
D. monotrichous.
E. peritrichous. - Ans -peritrichous
The outcome of the Gram stain is based on differences in the cell's
A. ribosomes.
B. inclusions.
C. cell wall.
D. cell membrane.
E. flagella. - Ans -cell wall
The most immediate result of destruction of a cell's ribosomes would be
A. material would not be able to cross the cell membrane.
B. protein synthesis would stop.
C. destruction of the cell's DNA.
D. formation of glycogen inclusions.
E. loss of capsule. - Ans -protein synthesis would stop
A bacterial cell exhibiting chemotaxis probably has
A. fimbriae.
B. capsules.
C. mesosomes.
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Page
D. flagella.
Verified Answers
The difference in cell wall structure of Mycobacterium and Nocardia compared to the
typical gram-positive
bacterial cell wall structure is
A. the presence of more peptidoglycan.
B. the predominance of unique, waxy lipids.
C. the rapid decolorization during staining.
D. the presence of lipopolysaccharide.
E. All of these choices are correct. - Ans -B. the predominance of unique, waxy lipids.
Bacterial cells could have any of the following appendages, except
A. flagella.
B. cilia.
C. fimbriae.
D. periplasmic flagella (axial filaments).
E. sex pili. - Ans -cilia
Spirochetes have a twisting and flexing locomotion due to appendages called
A. flagella.
B. cilia.
C. fimbriae.
Spirochetes have a twisting and flexing locomotion due to appendages called
A. flagella.
1
B. cilia.
Page
,C. fimbriae.
D. periplasmic flagella (axial filaments).
E. sex pili. - Ans -D. periplasmic flagella (axial filaments).
The short, numerous appendages used by some bacterial cells for adhering to surfaces are
called
A. flagella.
B. cilia.
C. fimbriae.
D. periplasmic flagella (axial filaments).
E. sex pili. - Ans -fimbriae
The transfer of genes during bacterial conjugation involves rigid, tubular appendages called
A. flagella.
B. cilia.
C. fimbriae.
D. periplasmic flagella (axial filaments).
E. sex pili. - Ans -sex pili
All bacterial cells have
A. a chromosome.
B. fimbriae.
C. endospores.
D. capsules.
E. flagella. - Ans -a chromosome
2
Page
, The term that refers to the presence of flagella all over the cell surface is
A. amphitrichous.
B. atrichous.
C. lophotrichous.
D. monotrichous.
E. peritrichous. - Ans -peritrichous
The outcome of the Gram stain is based on differences in the cell's
A. ribosomes.
B. inclusions.
C. cell wall.
D. cell membrane.
E. flagella. - Ans -cell wall
The most immediate result of destruction of a cell's ribosomes would be
A. material would not be able to cross the cell membrane.
B. protein synthesis would stop.
C. destruction of the cell's DNA.
D. formation of glycogen inclusions.
E. loss of capsule. - Ans -protein synthesis would stop
A bacterial cell exhibiting chemotaxis probably has
A. fimbriae.
B. capsules.
C. mesosomes.
3
Page
D. flagella.
