Immunology and Serology Exam 1 Questions With Answers

Immunology and Serology Exam 1 Questions With Answers Which of the following is an example of innate immunity? Phagocytosis A specific function of the immune system is to: Both a and b. Recognize self from non self Defend the body against non self How are cytotoxic T cells (Tc Cells) and natural killer (NK) cells similar? Effective against virally infected cells Which of the following white blood cells is capable of further differentiation in the tissues? Monocyte A natural antibody has been stimulated by a (an) unknown antigen The immune system has distinctive characteristics, such as immobility. True or false. False Immunology is defined as the system responsible for the recognition and disposal of foreign (non self) material. True or false. True Mechanisms of innate immunity: Both a and b are activated immediately after infection quickly begin to control multiplication. The first line of defense against infection is: unbroken skin or mucous membranes. Cell-mediated immunity is moderated by: both b and c T lymphocytes monocytes-macrophages If microorganisms penetrate the first line of defense, a second line of ________ forms defense mechanisms that become operational. both a and b cellular components humoral components Another name for Toll-like receptors is: pattern-recognition receptors. Secondary antibody stimulation results in a reaction that is termed anamnestic From the following, identify a specific component of the adaptive immune system that is formed in response to antigenic stimulation: Immunoglobulin The process of inflammation is characterized by all of the following except: Decreased capillary permeability All of the following are immunological functions of complement except: Induction of antiviral state Induction of an antiviral state Opsonization Chemotaxis Anaphylatoxin formation Which two organs are considered the primary lymphoid organs in which immunocompetent cells originate and mature? Thymus and bone marrow Which of the following cells is capable of binding to and killing microorganisms? Neutrophil All of the following are functions of immunoglobulins except: Interacting with Tc cells to lyse viruses Immunology is defined as the desirable and undesirable consequences of immune interactions. True The "father" of immunology is generally considered to be: Pasteur Acquired immunity can result from: Not contracting a disease genetic inheritance ..... B lymphocytes respond to: native antigenic determinants of appropriate fit. Enhancement of phagocytosis by coating of foreign particles with serum proteins is called opsonization Which T cells expresses the CD8 marker and acts specifically to kill tumors or virally infected cells? T cytotoxic The immune system has distinctive characteristics, such as specificity. True T lymphocytes respond to: antigens presented on the surface of an antigen-presenting cell. Cytokines: all of the above are produced by lymphocytes act on various elements of the immune system are molecular structures Artificial passive immunity is achieved by: infusion or injection of preformed specific antibody Skin, lactic acid secretions, stomach acidity, and the motion of cilia represent which type of immunity? Natural Which markers are found on mature, peripheral helper T cells? CD 2, CD 3, CD 4 Which MHC class of antigens is necessary for antigen recognition by CD4-positive T cells? Class II A child who contracts a contagious disease from an older sibling could develop ____________ immunity against the disease. Not natural passive ...... Immunology is defined as the study of molecules, cells, organs, and systems. True An early form of immunization was practiced by the: Not: Romans ..... Antibodies are produced by: