Question

what does the presence of memory cells allow the immune system to do? eliminate self - reactive cells create new white blood cells mount a faster and stronger response to repeat infections neutralize toxins question 8 (1 point) which type of immunity is primarily mediated by b cells and antibodies? passive immunity innate immunity humoral immunity cell - mediated immunity

Explanation:

• Memory cells are part of the adaptive immune system. When they encounter a pathogen they've seen before (repeat infection), they quickly differentiate into effector cells (like plasma cells for antibodies). This leads to a faster (shorter lag time) and stronger (more cells and antibodies produced) immune response compared to the first - time encounter.
• B cells are the key cells in humoral immunity. They can differentiate into plasma cells that secrete antibodies. Antibodies are the main mediators in humoral immunity, which is different from cell - mediated immunity (mediated by T cells), innate immunity (non - specific, immediate response without B cells and antibodies in the classic sense), and passive immunity (acquiring antibodies from an external source, not the body's own B cells producing them).

Answer:

• First question: Mount a faster and stronger response to repeat infections
• Second question: Humoral immunity