The concept of citizens creating the laws to govern themselves is called:

The difference between Classical Athens in citizenship and citizenship in ancient Rome was:

True / False? Correct answers receive full points. Incorrect answers may receive partial credit if you show work. A homogeneous system of 100 equations in 200 variables must have infinitely many solutions.

Which of the following best describes the major function of MHC molecules?

En el mundo hispanohablante, es común usar la hora militar. Si la hora de cenar es a las 21:00h, es a las:

Desde las dos (14:00) hasta las ocho (20:00) utilizamos:

In order to have a strong adaptive immune response, cells of the innate immune system need to work closely with cells of the adaptive immune system.  Which of the following combinations is the best example of innate cells interacting with cells from the adaptive immune system to increase an adaptive immune response?

The development of immunoglobulin (Ig) molecules and T-cell receptors (TCRs) in humans have some similarities as well as differences.  Which of the following statements best describes the development of these receptors in people?

Describe the chromosomal layout of the HLA complex.  Include a brief description of the structure and function of HLA Class 1 and HLA Class 2 proteins.  

Some  cells are able to directly kill tumor cells and virally infected cells by specifically recognizing cell surface antigens and then producing and releasing cytotoxic granules that lead to apoptosis.  Which of the following cells directly kill tumor cells and virally infected cells in this manner?