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Microbiology with Diseases by Body
System Questions and Correct
Answers the Latest Update
The skin is an effective barrier against invading microbes because
A) the outer layers of cells are dead.
B) the surface is covered in salt.
C) it is well supplied with blood vessels to flush microbes from the surface.
D) no microbes are able to survive on the surface.
E) the outer layers are dead and covered in salt
✓ E) the outer layers are dead and covered in salt.
Normal skin microbiota are able to grow on the skin because of their resistance
to
A) sebum.
B) salt.
C) keratin.
D) sebum and salt.
E) sebum, salt, and keratin.
✓ D) sebum and salt.
An infection of a hair follicle at the base of an eyelid is called a
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A) pimple.
B) sty.
C) furuncle.
D) carbuncle.
E) macule
✓ B) sty.
One feature that differentiates Staphylococcus aureus from other staphylococci
is its
A) slime layer production.
B) coagulase production.
C) beta-lactamase production.
D) production of both a slime layer and coagulase.
E) production of both coagulase and beta-lactamase.
✓ E) production of both coagulase and beta-lactamase.
Virulent strains of Staphylococcus aureus can resist penicillin because they
produce
A) a slime layer.
B) coagulase.
C) beta-lactamase.
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D) staphylokinase.
E) lipase
✓ C) beta-lactamase.
Which of the following is a complication that may result from a Streptococcus
pyogenes skin
infection?
A) a carbuncle
B) a sty
C) shingles
D) scalded skin syndrome
E) erysipelas
✓ E) erysipelas
Impetigo can be caused by
A) Staphylococcus aureus.
B) Staphylococcus epidermidis.
C) Streptococcus pyogenes.
D) both Staphylococcus aureus and Streptococcus pyogenes.
E) both Staphylococcus epidermidis and Streptococcus pyogenes.
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Microbiology with Diseases by Body
System Questions and Correct
Answers the Latest Update
The skin is an effective barrier against invading microbes because
A) the outer layers of cells are dead.
B) the surface is covered in salt.
C) it is well supplied with blood vessels to flush microbes from the surface.
D) no microbes are able to survive on the surface.
E) the outer layers are dead and covered in salt
✓ E) the outer layers are dead and covered in salt.
Normal skin microbiota are able to grow on the skin because of their resistance
to
A) sebum.
B) salt.
C) keratin.
D) sebum and salt.
E) sebum, salt, and keratin.
✓ D) sebum and salt.
An infection of a hair follicle at the base of an eyelid is called a
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A) pimple.
B) sty.
C) furuncle.
D) carbuncle.
E) macule
✓ B) sty.
One feature that differentiates Staphylococcus aureus from other staphylococci
is its
A) slime layer production.
B) coagulase production.
C) beta-lactamase production.
D) production of both a slime layer and coagulase.
E) production of both coagulase and beta-lactamase.
✓ E) production of both coagulase and beta-lactamase.
Virulent strains of Staphylococcus aureus can resist penicillin because they
produce
A) a slime layer.
B) coagulase.
C) beta-lactamase.
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D) staphylokinase.
E) lipase
✓ C) beta-lactamase.
Which of the following is a complication that may result from a Streptococcus
pyogenes skin
infection?
A) a carbuncle
B) a sty
C) shingles
D) scalded skin syndrome
E) erysipelas
✓ E) erysipelas
Impetigo can be caused by
A) Staphylococcus aureus.
B) Staphylococcus epidermidis.
C) Streptococcus pyogenes.
D) both Staphylococcus aureus and Streptococcus pyogenes.
E) both Staphylococcus epidermidis and Streptococcus pyogenes.
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