Professor Henry is preparing a traditional Thanksgiving meal and decides to make some turkey soup. He uses part of the leftover turkey and adds carrots, celery, and onions. He cools the soup in the refrigerator overnight, and the next morning he notices an undissolved layer a fat floating at the top of the soup. This top layer of fat is a)hydrophilic substance b) monosaccharide c)polysaccharide d)hydrophobic substance e) disaccharide

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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.