Question

What are naïve B or T cells and how do they function in cell-mediated and humoral immune responses?

a) Naïve cells are memory cells involved in the humoral response.
b) Naïve cells are activated cells involved in cell-mediated response.
c) Naïve cells are mature, non-activated cells circulating in the blood.
d) Naïve cells are involved only in the innate immune response.

Answer 1

B cells and T cells play important roles in defending the body against pathogens. Naïve B and T cells have not come into contact with pathogens and each have different functions in the immune response. Activated B cells produce antibodies in the humoral immune response, while activated T cells stimulate the cell-mediated immune response.

Step-by-step explanation:

B cells and T cells, also called B lymphocytes and T lymphocytes, play prominent roles in defending the body against specific pathogens and are involved in specific immunity. B cells produce antibodies, or immunoglobulins, in the humoral immune response. T cells function in the cell-mediated immune response by attacking foreign or diseased cells. Naïve B and T cells are lymphocytes that have not come into contact with pathogenic antigens. Activated B cells produce antibodies in the humoral immune response, while activated T cells stimulate the cell-mediated immune response.