[PDF] b cell activation a level

B cells are activated when chemicals are released from T helper cells. They are also activated when the antibody molecules on their cell surface bind to a complementary antigen. Different B cells have different shaped antibodies on their surface, so only the B cells with the correct-shaped antibodies will be activated.
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  • What is the activation of B cells?

    Activation of B cells
    A B cell becomes activated when its receptor recognizes an antigen and binds to it. In most cases, however, B-cell activation is dependent on a second factor mentioned above—stimulation by an activated helper T cell.

  • What are the two types of B cell activation?

    Upon activation, a naïve B cell can become a plasma B cell or a memory B cell.
  • B cells are activated when they encounter an antigen that they recognize. The antigen binds to the B cell's surface receptors, which activates and triggers it to divide and differentiate into an antibody-secreting plasma cell. Plasma cells produce antibodies that bind to the antigen and neutralize it.
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