1
BIO
BIO 251 - EXAM 2 QUESTIONS WITH
CORRECT VERIFIED SOLUTIONS 100%
GUARANTEED PASS (LATEST UPDATE)
In the thymus, T-cells that bind self antigens are:
a) stimulated to proliferate (divide)
b) sent to the spleen
c) eliminated through negative selection
d) shunted back into the thymus for a second round of selection - ANS ✓c)
eliminated through negative selection
An HIV positive individual with low CD4 T-cell count is infected with a
normally non-fatal virus and later dies. What likely occurred?
a) they were unable to release histamine and could don't mount an
inflammatory response
b) their immune system became hyper-active through the T-independent
pathway and they died due to a cytokine storm
c) they were unable to generate antibodies through the T-dependent
pathway due to lack of helper T-cells
d) their macrophages were unable to stimulate Helper T-cells due to
insufficient MHC II - ANS ✓c) they were unable to generate antibodies through
the T-dependent pathway due to lack of helper T-cells
Once you have recovered from influenza, you have acquired immunity to
that strain. This is an example of
a) natural active immunity
b) artificial active immunity
c) natural passive immunity
d) artificial passive immunity - ANS ✓a) natural active immunity
When would an inactivated vaccine be preferable to an attenuated vaccine?
a) when cost is a factor
b) when the patient has a well developed immune response
c) when rapid immunization must be obtained
d) in a disaster situation where electricity is unavailable - ANS ✓d) in a
disaster situation where electricity is unavailable
BIO 251
, 2
BIO
Which of the following cells would posses NEITHER an MHCII NOR an MHCI
a) red blood cell
b) hepatocyte
c) dendritic cell
d) neutrophil - ANS ✓a) red blood cell
The immune system cell most commonly associated with allergies is:
a) neutrophil
b) eosinophil
c) basophil
d) macrophage - ANS ✓c) basophil
Which of the following would be a common treatment for an autoimmune
disorder?
a) epinephrin
b) antihistamines
c) steroids
d) theyroidectomy - ANS ✓c) steroids
Suppose that someone has a contact dermatitis latex allergy. Would you
expect this condition to be diagnosable via a basophil degranulation assay?
a) Yes, because latex allergies are localized type 1 hypersensitivities
b) Yes, because although latex allergies are not IgE dependent they still
operate through a basophil induced inflammation
c) No, because as a localized reaction latex allergies only work through
mast cells
d) No, because latex allergies work through cytotoxic T cells - ANS ✓d) No,
because latex allergies work through cytotoxic T cells
Mother/foetus Rh factor incompatibility is an example of what
hypersensitivity:
a) Type 1
b) Type 2
c) Type 3
d) Type 4 - ANS ✓b) Type 2
What would likely be an appropriate treatment for a systemic type 1
hypersensitivity
a) Epi-pen
b) RhoGAM
c) Anti-histamine cream
BIO 251
BIO
BIO 251 - EXAM 2 QUESTIONS WITH
CORRECT VERIFIED SOLUTIONS 100%
GUARANTEED PASS (LATEST UPDATE)
In the thymus, T-cells that bind self antigens are:
a) stimulated to proliferate (divide)
b) sent to the spleen
c) eliminated through negative selection
d) shunted back into the thymus for a second round of selection - ANS ✓c)
eliminated through negative selection
An HIV positive individual with low CD4 T-cell count is infected with a
normally non-fatal virus and later dies. What likely occurred?
a) they were unable to release histamine and could don't mount an
inflammatory response
b) their immune system became hyper-active through the T-independent
pathway and they died due to a cytokine storm
c) they were unable to generate antibodies through the T-dependent
pathway due to lack of helper T-cells
d) their macrophages were unable to stimulate Helper T-cells due to
insufficient MHC II - ANS ✓c) they were unable to generate antibodies through
the T-dependent pathway due to lack of helper T-cells
Once you have recovered from influenza, you have acquired immunity to
that strain. This is an example of
a) natural active immunity
b) artificial active immunity
c) natural passive immunity
d) artificial passive immunity - ANS ✓a) natural active immunity
When would an inactivated vaccine be preferable to an attenuated vaccine?
a) when cost is a factor
b) when the patient has a well developed immune response
c) when rapid immunization must be obtained
d) in a disaster situation where electricity is unavailable - ANS ✓d) in a
disaster situation where electricity is unavailable
BIO 251
, 2
BIO
Which of the following cells would posses NEITHER an MHCII NOR an MHCI
a) red blood cell
b) hepatocyte
c) dendritic cell
d) neutrophil - ANS ✓a) red blood cell
The immune system cell most commonly associated with allergies is:
a) neutrophil
b) eosinophil
c) basophil
d) macrophage - ANS ✓c) basophil
Which of the following would be a common treatment for an autoimmune
disorder?
a) epinephrin
b) antihistamines
c) steroids
d) theyroidectomy - ANS ✓c) steroids
Suppose that someone has a contact dermatitis latex allergy. Would you
expect this condition to be diagnosable via a basophil degranulation assay?
a) Yes, because latex allergies are localized type 1 hypersensitivities
b) Yes, because although latex allergies are not IgE dependent they still
operate through a basophil induced inflammation
c) No, because as a localized reaction latex allergies only work through
mast cells
d) No, because latex allergies work through cytotoxic T cells - ANS ✓d) No,
because latex allergies work through cytotoxic T cells
Mother/foetus Rh factor incompatibility is an example of what
hypersensitivity:
a) Type 1
b) Type 2
c) Type 3
d) Type 4 - ANS ✓b) Type 2
What would likely be an appropriate treatment for a systemic type 1
hypersensitivity
a) Epi-pen
b) RhoGAM
c) Anti-histamine cream
BIO 251
