Question

Why is a secondary immune response stronger?

A) Effector cells produced during the primary response are still present circulating in the
blood.
B) Memory cells produced during the primary response lead to a rapid proliferation of
effector cells on subsequent exposure to the antigen.
C) Antibodies produced during the primary response are still present circulating in the
blood.
D) Body cells develop resistance to the pathogen.
E) Body cells are primed to produce antibodies against the pathogen.

Answer 1

The secondary immune response is stronger due to the presence of memory cells, which respond rapidly to subsequent exposures to the antigen and produce a higher amount of antibodies. The antibodies produced during the secondary response have higher affinity for the targeted epitopes. The plasma cells produced during the secondary response also live longer, resulting in elevated levels of specific antibody for a longer period of time.

Step-by-step explanation:

The secondary immune response is stronger because of the presence of memory cells produced during the primary response. These memory cells are primed to respond rapidly to subsequent exposures to the same antigen. They undergo rapid proliferation and differentiate into effector cells, which produce a higher amount of antibodies compared to the primary response. The antibodies produced during the secondary response also have higher affinity for the targeted epitopes. Additionally, the plasma cells produced during the secondary response live longer, resulting in elevated levels of specific antibody for a longer period of time.