Question

After infection has been cleared, antibodies will still be present from the plasma cells (last for a few months) that were created during the ___ immune response.

a. Primary.
b. Secondary.
c. Tertiary.
d. Innate.

Answer 1

The correct option is a. Antibodies will still be present in plasma cells created during the primary immune response. Memory B cells from the primary response lead to a potent secondary immune response upon re-exposure to the pathogen.

Step-by-step explanation:

After infection has been cleared, antibodies will still be present in the plasma cells that were created during the primary immune response. During the primary response to an infection, plasma cells are responsible for secreting antibodies.

Memory B cells produced in this phase will recognize the same pathogen upon re-exposure and differentiate into antibody-secreting plasma cells during the secondary immune response. These plasma cells output a larger amount of antibodies for a longer period compared to the primary response. This is because the immune system has already been 'primed' to recognize the antigen from the first exposure, leading to a more rapid and robust immune response upon subsequent exposures.