Why is the second response to an antigen on a pathogen faster than the initial response?
A)The antibodies of the secondary response are more efficient.
B)The antibodies of the secondary response are less efficient.
C)After the initial exposure,memory cells are present; they respond more quickly upon a second exposure to the antigen.
D)After the initial exposure,the memory cells respond more slowly.
E)Pathogens are generally weaker with the second exposure.

Question

Quizplus · Accepted Answer

After the initial exposure to an antigen, memory cells are produced by the immune system. These memory cells remain in the body and "remember" the antigen, so if the antigen is encountered again, the memory cells can quickly produce the appropriate antibodies to fight off the pathogen. This results in a faster and more efficient secondary immune response.

Why Is the Second Response to an Antigen on a Pathogen