Which statement is true?

Question

Quizplus · Accepted Answer

Antibodies are specifically produced by B cells in response to the presence of a foreign substance (antigen) that is identified as nonself by the immune system. Antibodies are then able to selectively bind to and neutralize these antigens, thereby helping the immune system to fight off the infection or disease associated with the foreign substance.

B) is false because natural killer cells are a type of white blood cell that can recognize and destroy abnormal cells, but they do not produce antibodies themselves.

C) is false because T cells produce other types of immune molecules such as cytokines and play an important role in cell-mediated immunity, but they do not produce antibodies directly.

D) is false because T cell receptors are actually responsible for recognizing and binding to specific antigen fragments presented by cells infected with a virus or bacteria. This interaction then triggers the activation and proliferation of T cells to kill these infected cells.

E) is false because antibodies are a key component of the adaptive immune system, which develops over time in response to exposure to different pathogens. The innate immune system, in contrast, provides general defense mechanisms that are present at birth and act as the body's first line of defense against infection.

Which Statement Is True