Bio 251 - EXAM 2
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1. Which of the following statements about b) the skin is the most com-
how the skin prevents disease is false? mon route for organisms to
a) salt in sweat retards microbial growth penetrate the body
b) the skin is the most common route for
organisms to penetrate the body
c) oil glands on the skin make it waterproof
d) native microbes that live on your skin
help protect you from infection
2. This antimicrobial protein is found at high a) lysozyme
levels in lacrimal secretions (tears)
a) lysozyme
b) defensins
c) sebum
d) C3b
3. Which component of the compliment sys- d) C3b
tem would stimulate neutrophils to phago-
cytize an attached cell?
a) C5a
b) C5b
c) C3a
d) C3b
4. Which of the following would prevent a mi- c) a bacteria that can prevent
crobe from activating the Alternative path- C3b from binding to it
way of the compliment system?
a) a bacteria that has an enzyme that de-
grades antibodies
b) a bacteria that has a thick cell wall
c) a bacteria that can prevent C3b from bind-
ing to it
d) a bacteria that contain no mannose
5. Which of the following is NOT a feature of a) melanin in the skin is toxic
the skin that allows it to serve as a barrier to a bacteria
to infection?
a) melanin in the skin is toxic to a bacteria
b) sweat creates a sling environment that
, Bio 251 - EXAM 2
Study online at https://quizlet.com/_fsj2d9
prevents non-halotolerant bacteria from
growing
c) tight junctions in keratinocytes make the
skin waterproof
d) resident flora produce bacteriocins
6. The immune system cell most commonly c) basophil
associated with allergies is:
a) neutrophil
b) eosinophil
c) basophil
d) macrophage
7. Which of the following would be an example c) peptidoglycan
of a PAMP?
a) GaGs on the surface of eukaryotic of a
PAMP
b) C3b bound to bacteria
c) peptidoglycan
d) tissue factor
8. This cytokine is released by virally infected interferon
cells, anti-viral
9. Suppose that someone's blood stem cells c) colony stimulating factor
in their marrow ware dividing and devel-
oping into B cells. What cytokine might be
responsible for this?
a) chemokines
b) tumor necrosis factor
c) colony stimulating factor
d) interferon
10. Which of the following cells would likely mast cells, dendritic cells
have Toll-like receptors (TLRs)?
a) mast cells
b) dendritic cells
c) neutrophils
d) T-lymphocytes
e) hepatocytes
Study online at https://quizlet.com/_fsj2d9
1. Which of the following statements about b) the skin is the most com-
how the skin prevents disease is false? mon route for organisms to
a) salt in sweat retards microbial growth penetrate the body
b) the skin is the most common route for
organisms to penetrate the body
c) oil glands on the skin make it waterproof
d) native microbes that live on your skin
help protect you from infection
2. This antimicrobial protein is found at high a) lysozyme
levels in lacrimal secretions (tears)
a) lysozyme
b) defensins
c) sebum
d) C3b
3. Which component of the compliment sys- d) C3b
tem would stimulate neutrophils to phago-
cytize an attached cell?
a) C5a
b) C5b
c) C3a
d) C3b
4. Which of the following would prevent a mi- c) a bacteria that can prevent
crobe from activating the Alternative path- C3b from binding to it
way of the compliment system?
a) a bacteria that has an enzyme that de-
grades antibodies
b) a bacteria that has a thick cell wall
c) a bacteria that can prevent C3b from bind-
ing to it
d) a bacteria that contain no mannose
5. Which of the following is NOT a feature of a) melanin in the skin is toxic
the skin that allows it to serve as a barrier to a bacteria
to infection?
a) melanin in the skin is toxic to a bacteria
b) sweat creates a sling environment that
, Bio 251 - EXAM 2
Study online at https://quizlet.com/_fsj2d9
prevents non-halotolerant bacteria from
growing
c) tight junctions in keratinocytes make the
skin waterproof
d) resident flora produce bacteriocins
6. The immune system cell most commonly c) basophil
associated with allergies is:
a) neutrophil
b) eosinophil
c) basophil
d) macrophage
7. Which of the following would be an example c) peptidoglycan
of a PAMP?
a) GaGs on the surface of eukaryotic of a
PAMP
b) C3b bound to bacteria
c) peptidoglycan
d) tissue factor
8. This cytokine is released by virally infected interferon
cells, anti-viral
9. Suppose that someone's blood stem cells c) colony stimulating factor
in their marrow ware dividing and devel-
oping into B cells. What cytokine might be
responsible for this?
a) chemokines
b) tumor necrosis factor
c) colony stimulating factor
d) interferon
10. Which of the following cells would likely mast cells, dendritic cells
have Toll-like receptors (TLRs)?
a) mast cells
b) dendritic cells
c) neutrophils
d) T-lymphocytes
e) hepatocytes
