Explore how antigen-bound B-cells receive helper-T signals, expand into clones and differentiate into plasma cells that secrete specific antibodies in IB Biology SL C3.2.8.
Tuberculosis (TB) is an infectious disease caused by the bacterium Mycobacterium tuberculosis.
Explain the production of antibodies when a patient is infected with the TB bacterium.
| a | phagocytes/lymphocytes are white blood cells; |
| b | TB bacterium has a specific antigen; |
| c | this antigen is recognised by white blood cells; |
| d | a clone of lymphocytes/plasma cells/B cells are produced; |
| e | antibodies are produced by lymphocytes; |
| f | each lymphocyte produces just one type of antibody; |
| g | (this is) specific immunity; |
| h | (part of the) antibody/immunoglobulin binds to the antigen / specific antibody binds to the specific antigen; |
| i | antibodies are proteins/immunoglobulins; |
| j | some activated B lymphocytes differentiate into memory B cells; |
| k | memory cells reproduce quickly; |
| l | memory cells prevent infection in the future; |
Allow annotated diagrams to explain the process.