Question

Which of the following cells is incorrectly paired with its function?

Options

• Plasma cell - produces antibodies

• Helper T-cell - lyses foreign cells

• Memory cell - rapidly proliferates into clones of effector cells when it encounters antigen

• Macrophage - engulfs bacteria and viruses

Answer 1

Helper T-cell - lyses foreign cells

Explanation:

Helper T-cells do not lyse foreign cells; instead, they stimulate and coordinate the immune response, including activating B-cells and macrophages. Cytotoxic T-cells are responsible for lysing infected or foreign cells. Plasma cells produce antibodies, memory cells proliferate rapidly upon antigen re-exposure, and macrophages engulf bacteria and viruses.