Select the appropriate answer to each question

1. What percentage of cell killing is by the indirect action for x-rays?

2. Under guidelines suggested by the National Commission on Radiation Protection, once a radiation worker declares a pregnancy, the monthly dose to the fetus than can be permitted due to work-related activities is which one of the following?

3. All of the following proteins are thought to be involved in the repair of DNA double strand breaks through non-homologous end-joining EXCEPT:

4. Which of the following is a directly ionizing radiation?

5. Neutrons are higher LET radiation than protons.

6. Radiation-induced apoptosis in normal tissues if often, but not always, dependent on activation of the tumor suppressor gene p53.

7. The growth fraction is the fraction of cells that are in cycle:

8. The oxygen enhancement ratio has a value in the range of about:

9. The growth fraction has a value of about:

10. The alpha/beta ratio for late-reponding normal tissues is greater than that for tumors:

100. Spallation products are associated with: