Cells

7. in order to maintain homeostasis, human cells must have a higher concentration of sodium ions outside the cell than inside the cell. in addition, the concentration of potassium ions must be higher inside the cell than outside the cell. which of the following forms of cellular transportation human cells maintain a relatively constant sodium and potassium concentration?
diffusion
endocytosis
osmosis
a cell membrane pump

D the sodium and potassium pump is responsible for transportation.

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.