QUESTION 4 5 points (Extra Cre The primary immune response is much faster than t

Question

QUESTION 4 5 points (Extra Cre The primary immune response is much faster than the secondary immune response and has a higher antibody concentration True False QUESTION 5 1 points (Extra Cre Why do diseases involving widespread infection often result in a fever? OThe inflammatory and immune responses result in extra heat production. The microorganisms trick the brain's temperature control center into creating a hot environment that favors their growth. ? The brain's emperature contro center responds o inflammation by creating a hot en onment unfavorable to the growth of microor anisms The inflammatory response result is less heat production. none of the above QUESTION6 1 points (Extra Cre If a person had the thymus gland removed, which of the following would NOT occur in his or her body? production of T cells production of B cells Omaturation of T cells Omaturation of B cells None of the above Screenshot saved The screenshot was QUESTION 7

Explanation / Answer

Answer for question number 4 : the given statement is false/wrong as secondary immune response is more effective than primary immune response.

Explanation :

Primary immune response : The initial encounter of a naive immunocompetent lymphocyte with an antigen induces a primary response; The primary response has a lag of approximately 5–7 days before antibody levels start to rise. This lag is the time required for activation of naive B cells by antigen and TH cells and for the subsequent proliferation and differentiation of the activated B cells into plasma cells.

Antibody levels peak in the primary response at about day 14 and then begin to drop off as the plasma cells begin to die.Predominant antibody produced is the IgM.Antibody affinity is lower in primary response , Naïve B or T cells are the responding cells in the primary response

Secondary immune response : A later contact of the host with antigen will induce a more rapid and heightened secondary response. The amplified population of memory cells accounts for the rapidity and intensity that distinguishes a secondary response from the primary response. In the secondary response, the lag is much shorter (only 1–2 days), antibody levels are much higher, and they are sustained for much longer. The secondary response reflects the activity of the clonally expanded population of memory B cells.

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