Immune System 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 Antibody proteins can physically change their shape to bind different epitopes Both (a) and (b) 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 Antibody proteins can physically change their shape to bind different epitopes Both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
Immune System Which of the following(s) is/are the determinants of antigenicity? Foreignness Chemical nature Size of the antigen All of these Foreignness Chemical nature Size of the antigen All of these ANSWER DOWNLOAD EXAMIANS APP
Immune System Following are the defenses of the colon except dense resident microbiota sIgA mucus fast flow rate dense resident microbiota sIgA mucus fast flow rate ANSWER DOWNLOAD EXAMIANS APP
Immune System Which of the following proteins would not need localization signal? A cell surface protein A cytosolic protein A protein bound to the endoplasmic reticulum (ER) membrane A nuclear protein A cell surface protein A cytosolic protein A protein bound to the endoplasmic reticulum (ER) membrane A nuclear protein ANSWER DOWNLOAD EXAMIANS APP
Immune System Polymorphonuclear leukocytes (or PMNs) are a type of phagocyte that can engulf and kill bacteria can be attracted to the site of an infection following activation of complement All of these are derived from bone marrow stem cells are a type of phagocyte that can engulf and kill bacteria can be attracted to the site of an infection following activation of complement All of these are derived from bone marrow stem cells ANSWER DOWNLOAD EXAMIANS APP
Immune System T cell receptors (or TCR) on CD4+ T cells recognize peptides associated with MHC class II molecules 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 recognize peptides associated with MHC class I molecules are secreted out into the environment to bind antigens recognize peptides not associated with MHC molecules ANSWER DOWNLOAD EXAMIANS APP
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