Question 1
What kind of proteins do the
ras proto-oncogenes encode?
◦ Signal transduction proteins
◦ Tumor-suppressing proteins
◦ DNA repair proteins
◦ DNA polymerases
◦ Mitotic spindle proteins
Question 2
What phrase best describes the field of epidemiology?
◦ It is the study of factors that control the presence or absence of disease.
◦ It is the study of infectious disease.
◦ It is a direct and experimental science.
◦ It begins with laboratory studies on experimental animals.
◦ It is none of these.