Immunological Techniques An antigen preparation and an antibody preparation are tested by immunodiffusion. Three bands are found, indicating that there was more than one antigen there was one antibody and one antigen the antibody was impure the temperature was too high there was more than one antigen there was one antibody and one antigen the antibody was impure the temperature was too high ANSWER DOWNLOAD EXAMIANS APP
Immunological Techniques The IPTG is a gratuitous inducers of (β-galactosidase, and x-gal is a chromogenic substrate. When α-complementation occurs which colour is produced? No colour is produced Brown White Blue No colour is produced Brown White Blue ANSWER DOWNLOAD EXAMIANS APP
Immunological Techniques What is the ELISA test intended to measure? Antibody to HIV only Antigen to HIV only Antibodies directed against HLA molecules Presence of free, circulating virus in the patient Antibody to HIV only Antigen to HIV only Antibodies directed against HLA molecules Presence of free, circulating virus in the patient ANSWER DOWNLOAD EXAMIANS APP
Immunological Techniques Agarose gel electrophoresis and pulsed field gel electrophoresis may be used to resolve respectively 20 kb and 2000 kb DNA 2000 kb and 20kb DNA 10 kb and 1000 kb DNA 1000 kb and l0kb DNA 20 kb and 2000 kb DNA 2000 kb and 20kb DNA 10 kb and 1000 kb DNA 1000 kb and l0kb DNA ANSWER DOWNLOAD EXAMIANS APP
Immunological Techniques Different form of a plasmid, on an agarose gel, after electrophoresis may be in which of the following sequence in decreasing molecular weight? Open circular, linear plasmid, super coiled plasmid Open circular, super coiled, linear plasmid DNA Linear plasmid, open circular, super coiled plasmid Open circular, super coiled, linear plasmid DNA Open circular, linear plasmid, super coiled plasmid Open circular, super coiled, linear plasmid DNA Linear plasmid, open circular, super coiled plasmid Open circular, super coiled, linear plasmid DNA ANSWER DOWNLOAD EXAMIANS APP
Immunological Techniques Which of the following is an immunodiffusion test? Ouchterloney technique Double-diffusion All of these Gel diffusion Ouchterloney technique Double-diffusion All of these Gel diffusion ANSWER DOWNLOAD EXAMIANS APP
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