Question

antibodies A specific B cell is activated when an) from a pathogen binds to one of the _ on its surface. Activation also requires from helper T cells. 1 antigen antigen This activated cell then begins dividing into memory B cells, which will participate in the secondary immune response, and cells that will act as protein factories in this immune response. plasma During the primary immune response, these cells secrete cytokines During the secondary immune response, the rapidly, giving rise to protein-producing against the pathogen. cells divide cells that act quickly memory B

Answer 1

1. A specific B cell is activated when an antigen from a pathogen binds to one of the antibodies on its surface. Activation also requires cytokines from helper T cells.

• Antibodies are also called as B cell receptor because they are located on the membranes of the B cells and help in recognizing the appropriate antigen. Cytokines are low molecular weight chemicals that play several roles in the immune system, one of which is to activate B cells during an immune response.

2. The activated cell then begins dividing into memory B cells, which will paticipate in the secondary immune response, and plasma cells that will act as protein factories in ths immune response.

• Plasma cells are responsible for the production of antibodies in the primary immune response.

3. During the primary immune response, these cells secrete antibodies.

• The antibodies produced against the antigen/pathogen bind to its surface and attract macrophages for appropriate action against it.

4. During the secondary immune response, the memory B cells divide rapidly, giving rise to protein-producing plasma cells that act quickly against the pathogen.

• Memory B cells are produced for subsequent immune responses to the antigen after its first encounter.