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EKB-Lecture 5
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Question 1 of 21
1. Question
- How do memory T-helper cells provide protection against a second infection of the same virus?
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Question 2 of 21
2. Question
- The time between being infected with a pathogen and the body producing an immune response can be referred to as a lag phase.
- Which of the following correctly compares the lag phases of primary and secondary immune responses?
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Question 3 of 21
3. Question
- Which statement best describes what happens to a memory B cell when it encounters a complementary antigen?
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Question 4 of 21
4. Question
- Which of the following correctly compares the primary response and secondary response to a pathogen?
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Question 5 of 21
5. Question
- Complete the sentence: We repeatedly get some viral diseases such as influenza because the proteins on the outside of the virus………………..rapidly, constantly producing new………..……that are not recognized by memory cells in the circulation.
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Question 6 of 21
6. Question
- The figure shows changes in antibody concentrations in the blood after exposure to antigens A and B. How does the time lag between initiating a primary immune response to antigen A and its peak approximately compare to the time lag of the secondary immune response to antigen A?
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Question 7 of 21
7. Question
- Which of the following statements correctly compares the amount of antibodies produced in the primary and secondary immune responses?
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Question 8 of 21
8. Question
- Which of the following is a reasonable, expected time for the secondary immune response to reach peak antibody production?
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Question 9 of 21
9. Question
- The graph provided shows the primary and secondary immune response in relation to antibodies produced. Which line represents exposure for the first time to a different antigen than the original?
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Question 10 of 21
10. Question
- How does the nonspecific immune response compare to the specific response to antigens?
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Question 11 of 21
11. Question
- Which of the following statements correctly compares the change in antibody concentration over time of the primary and secondary immune responses?
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Question 12 of 21
12. Question
- Which of the following statements about the primary immune response to a pathogen is correct?
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Question 13 of 21
13. Question
- Fill in the blanks: After exposure to a pathogen for the second time, the secondary response produces a…………….amount of antibodies ,………………..compared to the primary immune response.
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Question 14 of 21
14. Question
- Which of the following cells do not play a major role in either the primary or the secondary immune response?
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Question 15 of 21
15. Question
- Which of the following statements about the secondary response to a pathogen is correct?
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Question 16 of 21
16. Question
- Complete the sentence:……………….are lymphocytes that remain in the circulation for very long periods of time.
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Question 17 of 21
17. Question
- A person was infected with a pathogen and a primary immune response was initiated. Which of the following could happen?
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Question 18 of 21
18. Question
- The graph provided shows the primary and secondary immune response in relation to antibodies produced.
- Which line represents exposure for the second time to the original antigen?
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Question 19 of 21
19. Question
- How are memory cells different from plasma cells?
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Question 20 of 21
20. Question
- Which of the following cells or proteins are not involved in the humoral immune response?
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Question 21 of 21
21. Question
- Fill in the blank: A B cell will internalize the antigens present on the surface of a pathogen and ……………
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