N5313 UTA Exam 2 Questions with Correct Answers Latest Update 2025/2026
B-Lymphocyte Cells produce - Answers antibodies that incapacitate the antigen
T-Lymphocyte Cells attack - Answers the antigen directly
Immunoglobulin A (IgA) Function is - Answers In body fluid secretions such as saliva, sweat, bile.
Function Prevents the attachment of microorganisms to the mucous membranes.
Immunoglobulin M (IgM) Function is - Answers Primary Response! Produced early in immune
response. High level indicates a recent infection. Only in vascular system.
Immunoglobulin G (IgG) Function is - Answers Found in all body fluids. Only one that crosses
the placentae. Most prominent immune globulin. Binds W/viruses, bacteria & toxins. Activates
complement & binds to macrophages. Primary antibody in the secondary immune response.
Immunoglobulin E (IgE) Function is - Answers Parasitic infection & Hypersensitivity reaction.
Binds mast cells, eosinophils and basophils. Immediate hypersensitivity reaction or allergic
reaction develops w/in minutes.
Define Antigen - Answers Molecule that can react with antibody's or antigen receptors on B & T
cells. Toxin or other foreign substance which induces an immune response in the body,
especially the production of antibodies.
Define Allergens - Answers Substance that causes an allergic reaction.
Define Self-Antigen - Answers Is appropriate in size, has adequate chemical complexity, and is
present in sufficient quantity, but it is not foreign to the body. Does not normally elicit an
immune response.
Normal Functions of T cells - Answers -Responsible for Cell-mediated Immunity/Response
Function of CD4 cells are aka T-helper or T4 cells - Answers -Release lymphokines that begin
inflammatory process
-mediate delayed sensitivity (i.e. TB skin test)
Function of CD8 cells are cytotoxic T cells aka Killer T's, T8 cells - Answers -Kill virus infected
cells, tumors cells, & allograft cells (transplant tissue) by releasing cytotoxic chemicals that
destroy cells membrane or induce apoptosis.
Function of Memory T cells - Answers Allow host to remember antigen and respond quicker and
more vigorously after initial exposure.
Function of T-Regulatory cells - Answers Slow or stop immune response after it's defeated
Normal Functions of B Cells - Answers -Responsible for Humoral Immune response
B-Lymphocyte Cells produce - Answers antibodies that incapacitate the antigen
T-Lymphocyte Cells attack - Answers the antigen directly
Immunoglobulin A (IgA) Function is - Answers In body fluid secretions such as saliva, sweat, bile.
Function Prevents the attachment of microorganisms to the mucous membranes.
Immunoglobulin M (IgM) Function is - Answers Primary Response! Produced early in immune
response. High level indicates a recent infection. Only in vascular system.
Immunoglobulin G (IgG) Function is - Answers Found in all body fluids. Only one that crosses
the placentae. Most prominent immune globulin. Binds W/viruses, bacteria & toxins. Activates
complement & binds to macrophages. Primary antibody in the secondary immune response.
Immunoglobulin E (IgE) Function is - Answers Parasitic infection & Hypersensitivity reaction.
Binds mast cells, eosinophils and basophils. Immediate hypersensitivity reaction or allergic
reaction develops w/in minutes.
Define Antigen - Answers Molecule that can react with antibody's or antigen receptors on B & T
cells. Toxin or other foreign substance which induces an immune response in the body,
especially the production of antibodies.
Define Allergens - Answers Substance that causes an allergic reaction.
Define Self-Antigen - Answers Is appropriate in size, has adequate chemical complexity, and is
present in sufficient quantity, but it is not foreign to the body. Does not normally elicit an
immune response.
Normal Functions of T cells - Answers -Responsible for Cell-mediated Immunity/Response
Function of CD4 cells are aka T-helper or T4 cells - Answers -Release lymphokines that begin
inflammatory process
-mediate delayed sensitivity (i.e. TB skin test)
Function of CD8 cells are cytotoxic T cells aka Killer T's, T8 cells - Answers -Kill virus infected
cells, tumors cells, & allograft cells (transplant tissue) by releasing cytotoxic chemicals that
destroy cells membrane or induce apoptosis.
Function of Memory T cells - Answers Allow host to remember antigen and respond quicker and
more vigorously after initial exposure.
Function of T-Regulatory cells - Answers Slow or stop immune response after it's defeated
Normal Functions of B Cells - Answers -Responsible for Humoral Immune response
