MEDICINE MCQ
INFECTIOUS DISEASES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The individual has encountered the pathogen already
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The individual’s macrophages are on high alert
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The individual has encountered the pathogen and has memory B cells circulating
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Antibodies are produced by T cells
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Detailed explanation-1: -Because of the generation of memory cells, the secondary immune response is faster and stronger, leading to more effective pathogen elimination in comparison to the primary immune response.
Detailed explanation-2: -Because our memory cells are “experienced, ‘’ we will respond to a second (or subsequent) encounter more quickly. Whereas in a primary encounter, antibodies are not generated for several days, during a memory response antibodies appear in just a few days.
Detailed explanation-3: -Immunological memory is the ability of the immune system to respond more rapidly and effectively to pathogens that have been encountered previously, and reflects the preexistence of a clonally expanded population of antigen-specific lymphocytes.
Detailed explanation-4: -The secondary immune response is one of the most important features of immune systems. During the secondary immune response, the immune system can eliminate the antigen, which has been encountered by the individual during the primary invasion, more rapidly and efficiently.