BIO 149A -
Immunology
Thought
Questions for Exam 2
1. Identify
the Antigen-Binding Site, membrane spanning domain, Complementary-Determining
Regions, Variable Region, and Constant Region.
2. What
are gene segments? How are they used
during gene rearrangement? Discuss the
mechanism of gene rearrangement. What is
the function of gene rearrangement. Gene
rearrangement occurs in what cell type?
3. Discuss
the importance of diversity (or variability).
How is diversity achieved in TCR?
What region is most involved in diversity?
4. Discuss
Combinatorial Diversity versus Junctional
Diversity. When and in what cell type do
these processes occur? Describe the
mechanism that involve these processes.
5. Describe
the maturation (or development) of T-lymphocytes starting with progenitors in
the bone marrow and ending with the mature, naive T-cell.
6. What
is the Major Histocompatibility Complex? What are the genes that can be found in this
cluster? How do these genes provide
diversity to antigen presentation?
7. How
does antigen presentation on MHC class I differ from antigen presentation on
MHC class II? Describe the mechanism of
both processes.
8. How
is the presence of Allogeneic MHC molecules connected
to organ transplant rejection? How are
T-cell Receptors involved in this process?
9. Describe
naive T-cell activation (or priming).
10. Describe
all the signal transduction pathways (described in class) that may be involved
as the result of T-cell Receptor activation.
What is a TCR complex and what are the components?
11. How
is T-cell differentiation induced?
12. What
are the function of the different T-cells?
Describe the mechanism for all these functions.
13. Describe
the process of selection during T-lymphocyte maturation.