#Question id: 1980
#Section 2: General Biology
For one person to produce over a million different antibody molecules could not possibly require over a million different genes. Instead, this variability is accounted for by which processes?
#Question id: 1981
#Section 2: General Biology
Which of the following is accounted for by immunological memory?
#Question id: 1982
#Section 2: General Biology
These cells are involved in cell-mediated immunity, and they respond to class I MHC molecule-antigen complexes:
#Question id: 1983
#Section 2: General Biology
These cells are involved in innate immunity, and a person lacking these cells may have a higher than normal chance of developing malignant tumors:
#Question id: 1984
#Section 2: General Biology
Which of the following is a pathway that would lead to the activation of cytotoxic T cells?
#Question id: 1985
#Section 2: General Biology
Which of the following is the last line of defense against an extracellular pathogen?