Mark each statement as either true or false. Rewrite false statements to make them true by changing the underlined words.

__________ Secretion of antibodies by activated B cells is a form of cell-mediated immunity.

Verified step by step guidance

1. Identify the key terms in the statement: 'Secretion of antibodies', 'activated B cells', and 'cell-mediated immunity'.
2. Understand that 'cell-mediated immunity' involves T cells and does not primarily involve antibodies.
3. Recognize that 'humoral immunity' is the correct term for immunity involving antibodies secreted by B cells.
4. Determine that the statement is false because it incorrectly categorizes the type of immunity.
5. Rewrite the statement: 'Secretion of antibodies by activated B cells is a form of humoral immunity.'

Key Concepts

Humoral Immunity

Humoral immunity is a component of the adaptive immune system that involves the production of antibodies by B cells. When B cells are activated, they differentiate into plasma cells that secrete antibodies, which bind to specific antigens, neutralizing pathogens or marking them for destruction by other immune cells. This process is distinct from cell-mediated immunity, which primarily involves T cells.

Cell-Mediated Immunity

Cell-mediated immunity is an immune response that does not involve antibodies but rather relies on the activation of T cells. These T cells can directly kill infected host cells, activate other immune cells, and regulate the immune response. This type of immunity is crucial for combating intracellular pathogens, such as viruses and some bacteria.

B Cell Activation

B cell activation occurs when B cells encounter their specific antigen, often with the help of T helper cells. Upon activation, B cells undergo clonal expansion and differentiation into plasma cells, which produce antibodies. This process is essential for the adaptive immune response, allowing the body to remember and respond more effectively to previously encountered pathogens.