Which statement best describes the difference in responses of effector B cells (plasma cells)and cytotoxic T cells?
A) B cells confer active immunity; cytotoxic T cells confer passive immunity.
B) B cells kill pathogens directly; cytotoxic T cells kill host cells.
C) B cells secrete antibodies against a pathogen; cytotoxic T cells kill pathogen-infected host cells.
D) B cells carry out the cell-mediated response; cytotoxic T cells carry out the humoral response.
E) B cells respond the first time a pathogen is present; cytotoxic T cells respond subsequent times.

Question

Quizplus · Accepted Answer

The statement that best describes the difference in responses of effector B cells (plasma cells) and cytotoxic T cells is that B cells secrete antibodies against a pathogen while cytotoxic T cells kill pathogen-infected host cells. B cells produce and secrete antibodies that can bind to pathogens and mark them for destruction, while cytotoxic T cells directly attack and kill cells that have been infected by the pathogen. This is a key difference between the humoral immune response (mediated by B cells and antibodies) and the cell-mediated immune response (mediated by T cells).

Which Statement Best Describes the Difference in Responses of Effector