Question

During a secondary response and subsequent responses, the cell surface receptors and antibodies show extensive somatic hypermutation, and the antibodies produced show an increase in?

Complement system
MHC I
MHC II
MHC III
Red blood cells surface proteins

Answer 1

The antibodies produced during secondary immune responses demonstrate increased affinity for antigens and a heightened ability to activate the 1) complement system due to somatic hypermutation and class switching.

Step-by-step explanation:

During a secondary response and subsequent responses, the cell surface receptors and antibodies undergo somatic hypermutation, resulting in the production of antibodies with increased affinity for the specific antigen.

These antibodies are more effective at binding to their targeted epitopes.

Additionally, due to class switching, there is an enhanced ability to activate the 1) complement system, which plays a significant role in the body's immune response by helping to clear pathogens.

Memory B cells and plasma cells produced during these responses are more prolific and long-lived compared to the primary response, leading to sustained antibody levels.