Following are some statements regarding the primary and secondary antibody response in humans. All the statements are correct except

Options

A. lag period (time between the introduction of antigen and appearance of antibodies in blood) in prmary response is longer than that is secondary response
B. predominant isotype produced in primary response is IgM while that in secondary response is IgG
C. primary antibodies have a higher affinity for antigen as compared to secondary antibodies
D. primary immune response is more quicker and intense than secondary immune response.

Answer

D

Explanation

The reaction of the body's immune system to the first of microbes (antigens) is called primary immune respone. It takes much longer time to develop because of the requirement of suitable receptor development. This response is feedble and declines rapidly. This however produces both receptors and memory cells. The reaction of they body's immune termed secondary immune response. This response in quicker and more intense than the primary immune response. This is so because the memory B cells are present ot quickly deal with the invading microbes by forming antibodies Body "remembers" that it has previously encountered certain type of infection.