Immunity
Immunity ( 54 Questions)
Which of the following statements about T cells is correct?
B cells, not T cells, are responsible for the production of antibodies during the humoral immune response.
T cells, specifically cytotoxic T cells (CD8+ T cells), are responsible for cell-mediated immunity. They directly recognize and attack infected or abnormal cells, leading to their destruction. This process is crucial in controlling viral infections and cancer cells.
Phagocytosis of pathogens is mainly carried out by macrophages and neutrophils, not T cells.
Allergic reactions are primarily mediated by a different type of T cells called helper T cells (CD4+ T cells), not cytotoxic T cells.
Explanation: T cells, specifically cytotoxic T cells (CD8+ T cells), are responsible for cell-mediated immunity. They directly recognize and attack infected or abnormal cells, leading to their destruction. This process is crucial in controlling viral infections and cancer cells.
Incorrect choices:
a. B cells, not T cells, are responsible for the production of antibodies during the humoral immune response.
c. Phagocytosis of pathogens is mainly carried out by macrophages and neutrophils, not T cells.
d. Allergic reactions are primarily mediated by a different type of T cells called helper T cells (CD4+ T cells), not cytotoxic T cells.