RADIATION BIOLOGY STUDY GUIDE 2026/2027
QUESTIONS AND SOLUTIONS RATED A+
✔✔What is the linear dose response curve? - ✔✔May overestimate risk at low doses.
✔✔What is the linear quadratic dose response curve? - ✔✔Underestimates the risk,
used for low dose probability and severity.
✔✔What is mutational frequency? - ✔✔Number of spontaneous mutations which arise
in each generation.
✔✔What is the radiation doubling dose? - ✔✔Dose that doubles the number of
spontaneous mutations.
✔✔What is the parenchymal compartment composed of? - ✔✔Stem cells, intermediate
cells, and end cells.
✔✔What does B & T's law state? - ✔✔Pressure of a given mass of an ideal gas is
inversely proportional to its volume as long as the temperature remains constant.
✔✔What do A & V's modifications state? - ✔✔Volume is directly proportional to the
amount of gas when pressure and temperature are held constant.
✔✔What are VIM, DIM, RPM, FPM, and multipotential connective tissue? - ✔✔VIM:
rapidly dividing stem cells; DIM: actively mitotic but more differentiated; RPM: do not
divide regularly but can; FPM: highly differentiated, do not divide; MPC: divides
irregularly.
✔✔What are stochastic effects? - ✔✔Probabilistic somatic effects with no threshold.
✔✔What are non-stochastic effects? - ✔✔Deterministic somatic effects directly related
to the dose received.
✔✔ What are acutely responding tissues? - ✔✔Rapidly dividing cells that show injury
after a short period of time.
✔✔What are late responding tissues? - ✔✔Slowly dividing cell populations that show
injury after at least 3 months post-irradiation.
✔✔What are acute effects of radiation? - ✔✔First effects seen, can be reversible or
irreversible, examples include pneumonitis and esophagitis.
✔✔What are chronic effects of radiation? - ✔✔Irreversible and permanent effects due to
depletion of critical nonparenchymal cells.
QUESTIONS AND SOLUTIONS RATED A+
✔✔What is the linear dose response curve? - ✔✔May overestimate risk at low doses.
✔✔What is the linear quadratic dose response curve? - ✔✔Underestimates the risk,
used for low dose probability and severity.
✔✔What is mutational frequency? - ✔✔Number of spontaneous mutations which arise
in each generation.
✔✔What is the radiation doubling dose? - ✔✔Dose that doubles the number of
spontaneous mutations.
✔✔What is the parenchymal compartment composed of? - ✔✔Stem cells, intermediate
cells, and end cells.
✔✔What does B & T's law state? - ✔✔Pressure of a given mass of an ideal gas is
inversely proportional to its volume as long as the temperature remains constant.
✔✔What do A & V's modifications state? - ✔✔Volume is directly proportional to the
amount of gas when pressure and temperature are held constant.
✔✔What are VIM, DIM, RPM, FPM, and multipotential connective tissue? - ✔✔VIM:
rapidly dividing stem cells; DIM: actively mitotic but more differentiated; RPM: do not
divide regularly but can; FPM: highly differentiated, do not divide; MPC: divides
irregularly.
✔✔What are stochastic effects? - ✔✔Probabilistic somatic effects with no threshold.
✔✔What are non-stochastic effects? - ✔✔Deterministic somatic effects directly related
to the dose received.
✔✔ What are acutely responding tissues? - ✔✔Rapidly dividing cells that show injury
after a short period of time.
✔✔What are late responding tissues? - ✔✔Slowly dividing cell populations that show
injury after at least 3 months post-irradiation.
✔✔What are acute effects of radiation? - ✔✔First effects seen, can be reversible or
irreversible, examples include pneumonitis and esophagitis.
✔✔What are chronic effects of radiation? - ✔✔Irreversible and permanent effects due to
depletion of critical nonparenchymal cells.
