Final Exam Bio117 2024|2024 Questions With Correct Answers

Which term best describes any substance that is recognized by the adaptive immune system? {Ans: antigen}Which of the following statements about B cells is true? -Upon binding free antigen, B cells are able to differentiate into plasma cells that secrete antibodies. -Upon binding antigen presented on a major histocompatibility complex (MHC) molecule, B cells differentiate into plasma cells that secrete antibody. -B cells only bind antigen presented on major histocompatibility complex II (MHC II) molecules. -When a secreted antibody binds antigen, it stimulates B cells to form memory cells. {Ans: Upon binding free antigen, B cells are able to differentiate into plasma cells that secrete antibodies}B-cell receptors bind to antigens that are either freely dissolved or present on the surface of invading or foreign cells. T-cell receptors ________. {Ans: bind to antigen fragments presented on major histocompatibility (MHC) complexes by host cells}Phagocytic cells of innate immunity of vertebrates include ________. 1)neutrophils 2)macrophages 3)platelets 4) mast cells {Ans: Only 1 and 2}What would be a consequence of a person having Na+ levels in the blood and interstitial fluids that are well below normal? {Ans: Neurons would not be able to undergo normal action potentials.}Which statement accurately