Exam 3 PCA and Quiz Questions | Verified by Experts 2024

Antibodies consist of ___________. - Two identical heavy chains and two identical light chains Regions of TCRs and BCRs that are particularly variable in their amino acid sequences are known for ____________. - Binding to antigen MHC molecules ____________. - Are recognized by T cells Based on your knowledge of MHC I and II, predict which cell type would be MOST likely not to express detectable MHC I? - Erythrocytes Which of the following would be LEAST likely to express MHC class II? - T cells What defines an exogenous antigen? - It is generated outside of the cell then taken into the cell by endocytosis Which most accurately represents the general order of the steps to antigen presentation? - Antigen acquisition, antigen breakdown into peptides, encounter of peptides with MHC molecules, binding of peptides to MHC molecules, and display of the peptide-loaded MHC molecules on the cell surface What defines an endogenous antigen? - It is generated within the cell