AP BIOLOGY

THE HUMAN IMMUNE SYSTEM

IMMUNE RESPONSE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A secondary immune response will be faster when ____
A
The individual has encountered the pathogen already
B
The individual’s macrophages are on high alert
C
The individual has encountered the pathogen and has memory B cells circulating
D
All of the above
Explanation: 

Detailed explanation-1: -Because of the generation of memory cells, the secondary immune response is faster and stronger, leading to more effective pathogen elimination in comparison to the primary immune response.

Detailed explanation-2: -Their function is to memorize the characteristics of the antigen that activated their parent B cell during initial infection such that if the memory B cell later encounters the same antigen, it triggers an accelerated and robust secondary immune response.

Detailed explanation-3: -In a secondary response to the same antigen, memory cells are rapidly activated. This process is quicker and more effective than the primary response.

Detailed explanation-4: -During the secondary immune response, the immune system can eliminate the antigen, which has been encountered by the individual during the primary invasion, more rapidly and efficiently. Both T and B memory cells contribute to the secondary response.

There is 1 question to complete.