Final answer:
A secondary adaptive immune response is stronger and faster than the primary response. It eliminates the pathogen quickly and is based on immunological memory. Antibodies produced during the secondary response are more effective and bind with higher affinity.
Step-by-step explanation:
Upon re-exposure to the same pathogen, a secondary adaptive immune response is generated, which is stronger and faster than the primary response. The secondary adaptive response often eliminates a pathogen before it can cause significant tissue damage or any symptoms. This secondary response is the basis of immunological memory, which protects us from getting diseases repeatedly from the same pathogen.
During the primary response, some of the cloned B cells are differentiated into memory B cells programmed to respond to subsequent exposures. This secondary response occurs more quickly and forcefully than the primary response. The lag period is decreased to only a few days and the production of IgG is significantly higher than observed for the primary response.