Cynthia's science teacher gives her an object and asks her to decide whether it is made of Matter or not. Cynthia uses a balance and determines the object has a mass of 45 grams. Cynthia then measures the object and determines it has a volume of 22 milliliters. According to your notes, is
this object made of matter?

A. Yes, it is made of matter
B. No, it is not made of matter

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.