Immune System Natural killer cells are involved in tumour rejection non-specific killing of virus transformed target cells all of these allograft rejection tumour rejection non-specific killing of virus transformed target cells all of these allograft rejection 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 Which of the following statements is false regarding B cells? B one marrow stem cells migrate to the thymus and develop into B cells B cells synthesize antibodies and put them on their cell surface B cells that recognize high concentrations of antigens (self) in the absence of other signals undergo apoptosis in the bone marrow B cells can undergo class switching and produce a different antibody type B one marrow stem cells migrate to the thymus and develop into B cells B cells synthesize antibodies and put them on their cell surface B cells that recognize high concentrations of antigens (self) in the absence of other signals undergo apoptosis in the bone marrow B cells can undergo class switching and produce a different antibody type ANSWER DOWNLOAD EXAMIANS APP
Immune System Which of the following is correct for CD8 T cells? CD8 T cells can kill individual virus-infected cells in a contact dependent fashion CD8 T cells only recognize virus-infected cells In the thymus, CD8 T cells undergo positive selection only, whereas CD4 T cells undergo negative selection only CD8 T cell receptor recognizes epitopes that are also commonly recognized by B cells CD8 T cells can kill individual virus-infected cells in a contact dependent fashion CD8 T cells only recognize virus-infected cells In the thymus, CD8 T cells undergo positive selection only, whereas CD4 T cells undergo negative selection only CD8 T cell receptor recognizes epitopes that are also commonly recognized by B cells ANSWER DOWNLOAD EXAMIANS APP
Immune System Major Histo Compatibility Complex (MHC) is a collection of genes arrayed on chromosome 6 in man, chromosone 21 in mice chromosome 17in man, chromosome 6 in mice chromosome 6 in man, chromosome 17 in mice chromosome 21 in man, chromosome 6 in mice chromosome 6 in man, chromosone 21 in mice chromosome 17in man, chromosome 6 in mice chromosome 6 in man, chromosome 17 in mice chromosome 21 in man, chromosome 6 in mice 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 By rearrangements of the DNA encoding the variable regions of the heavy and light chains Both (a) and (b) 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 By rearrangements of the DNA encoding the variable regions of the heavy and light chains Both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP