Blood bank questions (with complete solutions)

Which blood group has the most H substance? correct answers O Anti A and Anti B are produced by what? correct answers Ingestion of bacteria, food, pollen Why are cells washed in the AHG phase? correct answers Remove traces of unbound serum globulin What is the zeta potential? correct answers Net charge of cell and ionic cloud that travels with the cell, Want to lower the zeta potential for BB reactions, protein weakens the zeta potential Will there always be agglutination if an antibody attaches to a Red cell antigen correct answers No; cells may be sensitized What is prozone? correct answers Antibody excess What part of the antibody attaches to antigen? correct answers FAB If more cells are added than drops of antisera, is this a prozone or postzone? correct answers Postzone What is the purpose of centrifugation? correct answers Pushes cell closer together Will shaking the cell button too hard cause a false = or false +? correct answers False negative What about too heavy of a cell suspension? correct answers False negative What are check cells? correct answers D+ cells with anti D added What are the most common blood types? correct answers A and OAutosomal co dominant How are blood group antigens inherited? correct answers Autosomal co dominant When are check cells added? correct answers All negative AHG reactions Can the specific antibody be determined from the screening cell antigram? correct answers No can however make an educated guess What blood type are screening cells? correct answers Group O What does titer mean? correct answers ABY concentration capable of binding RBC antigens What cell processes the antigen? Produces antibody correct answers T cells; plasma cells What does sensitized red cell mean? correct answers Antibody attached but no agglutination