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Bio 109 Unit 3 Compilation Exam Questions with Detailed, (COMPLETE ANSWERS), 2024; 100% TRUSTED Complete, trusted solutions and explanations$7.99
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Bio 109 Unit 3 Compilation
Study online at https://quizlet.com/_3y3hlh
1. What is the function of helper T-cells? C) promotion of
B-cell and T-cell ac-
A) initiation of inflammation tivity
B) phagocytosis of bacteria and viruses
C) promotion of B-cell and T-cell activity
D) production of specific antibodies against
pathogens
E) the production of antibodies
2. Allergies are the result of an exaggerated immune A) Allergens
response. What triggers this response?
A) Allergens
B) Antidotes
C) Antibodies
D) Antihistamines
E) none of the above
3. Why are polio vaccinations effective? C) They cause an
immune response
A) They cause the inflammation response resulting resulting in the pro-
in the production of antibodies that engulf the polio duction of memory B
virus if it enters the body. cells that provide a
rapid response if the
B) They cause an immune response resulting in the individual is subse-
production of cytotoxic (killer) T cells that remain in quently infected by
the blood attacking all viruses that enter the body. the polio virus.
C) They cause an immune response resulting in the
production of memory B cells that provide a rapid
response if the individual is subsequently infected
by the polio virus.
D) They cause the inflammation response resulting
in the production of memory T cells that provide a
limited response if infected by the polio virus.
E) none of the above
, Bio 109 Unit 3 Compilation
Study online at https://quizlet.com/_3y3hlh
4. Which of the following kills invading microbes? A) lysozymes
B) stomach acid
A) lysozymes C) intestinal en-
B) stomach acid zymes
C) intestinal enzymes D) all of the above
D) all of the above
E) none of the above
5. The inflammatory response includes all of the fol- A) vessel constric-
lowing except tion
A) vessel constriction
B) temperature increase
C) increased blood flow
D) phagocytosis
E) release of histamine by Mast cells
6. The secretion of antibodies by lymphocyte B cells C) humoral immunity
provides
A) cell-mediated immunity
B) passive immunity
C) humoral immunity
D) permanent immunity
E) none of the above
7. Which of the following are autoimmune diseases? A) multiple scerosis
B) rheumatoid arthri-
A) multiple scerosis tis
B) rheumatoid arthritis C) isulin-dependent
C) isulin-dependent diabetes mellitus diabetes mellitus
D) systemic lupus erythematosus D) systemic lupus
E) all of the above erythematosus
E) all of the above
8. Which type of T cell lyses cells that have been C) cytotoxic T cells
infected with viruses?
A) inducer T cells
B) helper T cells
, Bio 109 Unit 3 Compilation
Study online at https://quizlet.com/_3y3hlh
C) cytotoxic T cells
D) suppressor T cells
E) none of the above
9. When a B cell encounters antigen to which it is B) plasma cells
targeted, it divides rapidly and produces
A) more antigen
B) plasma cells
C) T cells
D) killer cells
E) interferons
10. Your body has millions of different antibodies for B) antibody genes
detecting millions of different antigens because undergo rearrange-
ment
A) you have millions of different antibody genes
B) antibody genes undergo rearrangement
C) antibody genes undergo antigen shifting
D) all of the above
E) none of the above
11. Which type of surface marker is present on every C) class I MHC
nucleated cell in your body?
A) B receptor
B) T receptor
C) class I MHC
D) class II MHC
E) all of the above
12. Memory cells D) provide an accel-
erated immune re-
A) produce cyclosporine sponse upon second
B) are responsible for passive immunity exposure to a partic-
C) prevent an animal from encountering certain ular antigen
antigens
D) provide an accelerated immune response upon
second exposure to a particular antigen
E) all of the above
, Bio 109 Unit 3 Compilation
Study online at https://quizlet.com/_3y3hlh
13. All of the following are part of our antigen specific A) acute inflamma-
defense mechanisms except: tion
A) acute inflammation
B) lymphocytes
C) antibody production
D) macrophages
14. A countercurrent flow system between substance C) maximizes the ex-
A and substance B change by having A
and B flow in oppo-
A) maximizes the exchange by having A and B flow site directions
in the same direction
B) minimizes the exchange by having A and B flow
in the same direction
C) maximizes the exchange by having A and B flow
in opposite directions
D) minimizes the exchange by having A and B flow
in opposite directions
E) none of the above
15. The body's automatic tendency to maintain a con- B) homeostasis
stant internal environment is termed
A) negative feedback
B) homeostasis
C) physiological control
D) phagocytosis
E) static equilibrium
16. Consider a husband and wife sharing a bed, with A) positive feedback
each one having and electric blanket. Their controls
become switched. When the husband feels cold, he
turns up the control. This warms up his partner,
who turns down the control. This chills the husband
who turns up his control even more. The process
continues. For both the wife and the husband this
would be an example of
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