Bio 251 - EXAM 2 Questions and Answers
(latest version verified for accuracy) |
2026\2027 Latest!! (Verified Answers)
Study Guide
Which of the following would prevent a microbe from
activating the Alternative pathway of the compliment
system?
a) a bacteria that has an enzyme that degrades
antibodies
b) a bacteria that has a thick cell wall
c) a bacteria that can prevent C3b from binding to it
d) a bacteria that contain no mannose
c) a bacteria that can prevent C3b from binding to it
Which of the following pathogens could initiate an
antibody response without Helper T-cells?
a) HIV
b) Gram- organisms
c) Gram+ organisms
d) Helper T-cells are not normally for an antibody response
b) Gram- organisms
, Which of the following statements about B-cells is false?
a) B-cells mature in the bone marrow
b) B-cell receptors are all identical
c) When activated, B-cells differentiate into plasma cells
d) B-cells present foreign antigens on an MHCII
b) B-cell receptors are all identical
What would likely be an appropriate treatment for a
systemic type 1 hypersensitivity
a) Epi-pen
b) RhoGAM
c) Anti-histamine cream
d) there is no effective treatment for
type 1 hypersensitivities
a) Epi-pen
, Suppose you are observing a patient who has a bacterial
infection that begins to subside fairly quickly after
becoming symptomatic. An analysis of their blood shows
high levels of IgM specific to the bacteria, but
undetectable levels of IgG and IgD. Two months after
being discharged, the patient returns with another infection
by the same bacteria. What would be reasonable to
conclude?
The patient's immune reaction happened through the T-
independent pathway
Know the following:
IgM, IgG, IgA, IgE, IgD
IgM- first antibody produced in response to an infection
IgG- antibody that penetrates the placenta; abundant in
blood and fluids; antibody of memory
IgA- found in body secretions: mucus, tears, saliva,
breastmilk for infants
IgE- involved in allergic reactions
IgD- poorly understood function
(latest version verified for accuracy) |
2026\2027 Latest!! (Verified Answers)
Study Guide
Which of the following would prevent a microbe from
activating the Alternative pathway of the compliment
system?
a) a bacteria that has an enzyme that degrades
antibodies
b) a bacteria that has a thick cell wall
c) a bacteria that can prevent C3b from binding to it
d) a bacteria that contain no mannose
c) a bacteria that can prevent C3b from binding to it
Which of the following pathogens could initiate an
antibody response without Helper T-cells?
a) HIV
b) Gram- organisms
c) Gram+ organisms
d) Helper T-cells are not normally for an antibody response
b) Gram- organisms
, Which of the following statements about B-cells is false?
a) B-cells mature in the bone marrow
b) B-cell receptors are all identical
c) When activated, B-cells differentiate into plasma cells
d) B-cells present foreign antigens on an MHCII
b) B-cell receptors are all identical
What would likely be an appropriate treatment for a
systemic type 1 hypersensitivity
a) Epi-pen
b) RhoGAM
c) Anti-histamine cream
d) there is no effective treatment for
type 1 hypersensitivities
a) Epi-pen
, Suppose you are observing a patient who has a bacterial
infection that begins to subside fairly quickly after
becoming symptomatic. An analysis of their blood shows
high levels of IgM specific to the bacteria, but
undetectable levels of IgG and IgD. Two months after
being discharged, the patient returns with another infection
by the same bacteria. What would be reasonable to
conclude?
The patient's immune reaction happened through the T-
independent pathway
Know the following:
IgM, IgG, IgA, IgE, IgD
IgM- first antibody produced in response to an infection
IgG- antibody that penetrates the placenta; abundant in
blood and fluids; antibody of memory
IgA- found in body secretions: mucus, tears, saliva,
breastmilk for infants
IgE- involved in allergic reactions
IgD- poorly understood function
