Test 3 Immunology Serology Grayson College MLT| 177 QUESTIONS| WITH COMPLETE SOLUTIONS

Define immunoassay correct answer: A specific test that measures the presence or concentration of a substance in solution that may contain a complex mixture of a substance A precipitation reaction is the result of ___ correct answer: combining a soluble antigen with soluble antibody to produce insoluble complexes that are visible Binding characteristics of antibodies called ____ and ____ play a role in precipitation reactions correct answer: affinity and avidity Affinity is _____ correct answer: the initial force of attrraction that exists between a single fab site on an antibody molecule and a single epitope on the corresponding antigen An epitope is on the ____ correct answer: antigen The binding site is on the ___ correct answer: antibody _____ is the initial force of attraction correct answer: Affinity Antibodies are capable of reacting with antigens that are structurally similar to the original antigen that induced antibody production. This is called ____ correct answer: cross reactivity If the epitope and the antibody binding site have a perfect lock-and-key relationship, the ____ will be maximal. correct answer: affinity Avidity represents the ____ correct answer: sum of all the attractive forces between an antigen and an antibody