In the secondary response, the IgG levels rise much faster than they did during the first antibody response. Why is this?Choose one: A.  The plasma cells that were produced for the first response have a very long half-life, so they are able to produce antibodies for the second response without activation of other B cells. B.  Memory B cells are capable of producing antibodies directly, so there is no need to spend time differentiating them into plasma cells. C.  By the secondary response, there are B cells and T cells that have differentiated into plasma cells, giving more total plasma cells to work with. D.  Memory B cells are present for the secondary response. Those cells are much easier to activate than the naive B cells; therefore, the response occurs much more quickly and on a larger scale.

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Immunology

Immunology is the division of science involved with the immune reactions occurring in living organisms. The organisms are accustomed to evolving internal defense mechanisms to evade the invasion of microbial pathogens. Diverse cells are connected with stimulating the immune responses, which produce inhospitable conditions to the microbes prompting their lysis and thus inhibits the multiplication of the pathogens. The immune system can distinguish the pathogens through the aid of cellular intercommunication and launch responses to destroy them.