Immune System Macrophages are professional antigen- presenting cells. The protein molecule through which they present antigen in human is HLA CD8 interleukin actin HLA CD8 interleukin actin ANSWER DOWNLOAD EXAMIANS APP
Immune System Which of the following(s) is/are the determinants of antigenicity? Chemical nature Size of the antigen Foreignness All of these Chemical nature Size of the antigen Foreignness All of these ANSWER DOWNLOAD EXAMIANS APP
Immune System Chemically an antigen may be any of these lipid protein polysaccharide any of these lipid protein polysaccharide ANSWER DOWNLOAD EXAMIANS APP
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 Antibody proteins can physically change their shape to bind different epitopes Both (a) and (b) By rearrangements of the DNA encoding the variable regions of the heavy and light chains By the combination of different heavy and light chains that form the antigen binding site Antibody proteins can physically change their shape to bind different epitopes Both (a) and (b) By rearrangements of the DNA encoding the variable regions of the heavy and light chains ANSWER DOWNLOAD EXAMIANS APP
Immune System Which of the following proteins would not need localization signal? A cell surface protein A cytosolic protein A nuclear protein A protein bound to the endoplasmic reticulum (ER) membrane A cell surface protein A cytosolic protein A nuclear protein A protein bound to the endoplasmic reticulum (ER) membrane ANSWER DOWNLOAD EXAMIANS APP
Immune System Polymorphonuclear leukocytes (or PMNs) are derived from bone marrow stem cells All of these are a type of phagocyte that can engulf and kill bacteria can be attracted to the site of an infection following activation of complement are derived from bone marrow stem cells All of these are a type of phagocyte that can engulf and kill bacteria can be attracted to the site of an infection following activation of complement ANSWER DOWNLOAD EXAMIANS APP
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