The IPTG is a gratuitous inducers of (β-galactosidase, and x-gal is a chromogenic substrate. When α-complementation occurs which colour is produced? Brown White Blue No colour is produced TRUE ANSWER : ? YOUR ANSWER : ?
What is approximatively the half life of 32-Phosphorus? 42 days 30 days 14 days 28 days TRUE ANSWER : ? YOUR ANSWER : ?
Rocket Immunodiffusion is also known as none of these double-diffusion gel diffusion electroimmunodiffusion TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is an immunodiffusion test? All of these Gel diffusion Ouchterloney technique Double-diffusion TRUE ANSWER : ? YOUR ANSWER : ?
Radial Immunodiffusion is similar to Ouchterloney technique double-diffusion gel diffusion all of these TRUE ANSWER : ? YOUR ANSWER : ?
What would happen if the anti-human Ig-conjugate is not washed free of the well before the substrate is added? None of these All wells would show uniform over-development due to unbound and excess anti-human Ig enzyme conjugate The ELISA would develop normally The ELISA would not develop when the substrate was added TRUE ANSWER : ? YOUR ANSWER : ?
What is the ELISA test intended to measure? Antibody to HIV only Antibodies directed against HLA molecules Antigen to HIV only Presence of free, circulating virus in the patient TRUE ANSWER : ? YOUR ANSWER : ?
Immunoelectrophoresis techniques are designed to separate the mixture components from each other by using electrophoresis after reaction with antigen prior to reaction with antigen prior to reaction with antibody after reaction with antibody TRUE ANSWER : ? YOUR ANSWER : ?
Agarose gel electrophoresis and pulsed field gel electrophoresis may be used to resolve respectively 10 kb and 1000 kb DNA 1000 kb and l0kb DNA 2000 kb and 20kb DNA 20 kb and 2000 kb DNA TRUE ANSWER : ? YOUR ANSWER : ?
DNA- footprinting is a suitable technique for identifying which of the following? Protein binding site within DNA Particular mRNA in mixture Introns within DNA Particular t-RNA in mixture TRUE ANSWER : ? YOUR ANSWER : ?