Numerous antibodies can be prepared, against one antigen, each binds to unique epitopes. How is this antibody diversity generated? By the combination of different heavy and light chains that form the antigen binding site By rearrangements of the DNA encoding the variable regions of the heavy and light chains Both (a) and (b) Antibody proteins can physically change their shape to bind different epitopes TRUE ANSWER : ? YOUR ANSWER : ?
Treatment with bacterial endotoxins results blast formation in B cells monocytes none of these T cells TRUE ANSWER : ? YOUR ANSWER : ?
Large parasites such as helminthes may be killed extracellularly by the action of neutrophils eosinophils monocytes basophils TRUE ANSWER : ? YOUR ANSWER : ?
CD8 surface antigen is present in none of these cytotoxic T cells both (a) and (b) suppresssor T cells TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following proteins would not need localization signal? A cytosolic protein A protein bound to the endoplasmic reticulum (ER) membrane A nuclear protein A cell surface protein TRUE ANSWER : ? YOUR ANSWER : ?
T cell receptors (or TCR) on CD4+ T cells recognize peptides associated with MHC class I molecules are secreted out into the environment to bind antigens recognize peptides not associated with MHC molecules recognize peptides associated with MHC class II molecules TRUE ANSWER : ? YOUR ANSWER : ?
Following are the defenses of the colon except fast flow rate sIgA dense resident microbiota mucus TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is correct for isoantigens? They are antigens found in some members of a species They are antigens found in some members of different species They are antigens found in all members of a species They are antigens found in all members of different species TRUE ANSWER : ? YOUR ANSWER : ?
Immunity is not long lasting to whooping cough diphtheria influenza mumps TRUE ANSWER : ? YOUR ANSWER : ?