MT AAB Immunology 2024 Questions And Answers Solved 100% Correct!!

Which of the following is not an external defense mechanism of natural immunity that provides the human body with a defense against invading microorganisms? - Answer-Bursa of Fabricius All of the following are external defense mechanisms of natural immunity that provides the human body with a defense against invading microorganisms - Answer-Skin, mucus, and body fluids Having an elevated temperature during an infection is an example of what type of immunity? - AnswerInnate immunity Which defense mechanism involves engulfing foreign particles? - Answer-Phagocytosis Which one plays an important role in making bacteria susceptible to osmotic lysis? - Answer-Lysozymes Which one of the following is responsible for the nonspecific killing of tumor cells? - Answer-Natural killer cells Which one of the following is capable of eliciting an immune response? - Answer-Immunogen Receiving a vaccination is an example of which type of immunity? - Answer-Artificial active immunity Which immune response is mediated by antibiotics? - Answer-Humoral immunity Which one of the following is considered to be a primary lymphoid organ? - Answer-Thymus Which organs or systems are capable of responding to circulating antigens with the production of specific lymphocytes and plasma cells? - Answer-Lymph nodes and spleen Where are B lymphocytes and T lymphocytes produced? - Answer-Bone marrowWhich of the following cells are thymus-dependent? - Answer-T cells Where does the differentiation of T cells occur? - Answer-Thymus T cells are involved with which of the following? - Answer-Cell-mediated immunity How can cell-mediated immunity be transferred to a normal individual? - Answer-With lymphoid cells from a hypersensitive person What is the main function of T helper cells? - Answer-Assist B cells in producing antibody The production of antibodies is turned off by which cells? - Answer-Suppressor T cells What are small polypeptides given off by T cells, which regulate the function of phagocytic cells called? - Answer-Lymphokines Which T cell acts specifically to kill tumor cells and virally infected cells? - Answer-Cytotoxic T cells All of the following are surface markers for T cells EXCEPT which one? - Answer-CD 16 All of the following are surface markers for T cells: - Answer-CD2, CD4, CD8 Lymphoid stem cells that differentiate in the bone marrow are called what? - Answer-B cells Which one of the following is associated with the humoral immune response? - Answer-Plasma cells Which cells are identified by the presence of surface immunoglobulin receptor? - Answer-B cells