Question

although both are derived from activated b cells, what is the key functional difference between a plasma cell and a memory cell? plasma cells require helper t cells to function, while memory cells do not. plasma cells can fight any pathogen, while memory cells are specific to only one. plasma cells produce antibodies, while memory cells produce antigens. plasma cells are for the immediate, short - term mass production of antibodies, while memory cells are for long - term readiness for a future infection. how do the actions of coughing and sneezing support the function of mucous membranes in the respiratory tract? they physically expel mucus that has already trapped pathogens, completing the mechanical removal process. they create a chemical barrier by releasing pathogen - killing enzymes into the air. they increase the acidity of the mucus, making it a more effective chemical barrier. they stimulate the growth of harmless biological barriers in the respiratory tract

Explanation:

1. Plasma cells are specialized in quickly producing large - amounts of antibodies during an immediate immune response. Memory cells remain in the body for a long time, ready to recognize and respond rapidly if the same pathogen returns.
2. Coughing and sneezing are physical actions that expel mucus containing trapped pathogens from the respiratory tract, which is part of the mechanical removal process of the immune defense.

Answer:

1. Plasma cells are for the immediate, short - term mass production of antibodies, while memory cells are for long - term readiness for a future infection.
2. They physically expel mucus that has already trapped pathogens, completing the mechanical removal process.