AP BIOLOGY

THE HUMAN IMMUNE SYSTEM

IMMUNE RESPONSE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A secondary immune response occurs when an antigen isencountered on a second occasion, due to exposure to a pathogen that previously caused infection. Which property of some viruses explains the lack of a secondary immune response?
A
Viruses fail to induce a primary response.
B
Viruses can have a high mutation rate.
C
B cells do not interact with viruses.
D
Antibodies cannot interact with viruses.
Explanation: 

Detailed explanation-1: -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.

Detailed explanation-2: -A secondary immune response occurs when an antigen is encountered on a second occasion, due to exposure to a pathogen that previously caused infection.

Detailed explanation-3: -In the primary response to infection, antibodies are secreted first from plasma cells. Upon re-exposure to the same pathogen, memory cells differentiate into antibody-secreting plasma cells that output a greater amount of antibody for a longer period of time.

Detailed explanation-4: -memory B cells and memory helper T cells; they’re responsible for the quick immune response at the 2nd encounter. they recognize the recurring pathogens and are already ready to fight it.

There is 1 question to complete.