Radiation biology Exam Questions and Answers With Verified Solutions 2025
Short-term radiation effects are associated with - ✔✔Large amounts of radiation absorbed in a short
time AND Acute radiation syndrome.
Which of the following types of cells is most radiosensitive - ✔✔Blood
Which of the following are considered to be radioresistant tissues? - ✔✔Salivary glands
One gray is equivalent to ____ rad(s). - ✔✔100
Which of the following mechanisms of radiation injury may occur when x-ray energy is absorbed by
patient tissues? - ✔✔Ionization AND Free radical formation
Which of the following is considered a short-term effect of radiation exposure? - ✔✔Hair-loss
Cellular injuries following the latent period may include (1) cell death, (2) cessation of mitotic activity,
and/or (3) abnormal mitotic activity. - ✔✔1, 2, and 3
According to the dose-response curve, when dose and damage are plotted on a graph, a ____
relationship is seen. - ✔✔linear, nonthreshold
Examples of nonstochastic effects include - ✔✔Hair-loss and Erythema
A nonthreshold dose-response curve suggests that - ✔✔No matter how small the amount of radiation
received, some biologic damage occurs.
The SI equivalent of the rem is: - ✔✔The sievert
Short-term radiation effects are associated with - ✔✔Large amounts of radiation absorbed in a short
time AND Acute radiation syndrome.
Which of the following types of cells is most radiosensitive - ✔✔Blood
Which of the following are considered to be radioresistant tissues? - ✔✔Salivary glands
One gray is equivalent to ____ rad(s). - ✔✔100
Which of the following mechanisms of radiation injury may occur when x-ray energy is absorbed by
patient tissues? - ✔✔Ionization AND Free radical formation
Which of the following is considered a short-term effect of radiation exposure? - ✔✔Hair-loss
Cellular injuries following the latent period may include (1) cell death, (2) cessation of mitotic activity,
and/or (3) abnormal mitotic activity. - ✔✔1, 2, and 3
According to the dose-response curve, when dose and damage are plotted on a graph, a ____
relationship is seen. - ✔✔linear, nonthreshold
Examples of nonstochastic effects include - ✔✔Hair-loss and Erythema
A nonthreshold dose-response curve suggests that - ✔✔No matter how small the amount of radiation
received, some biologic damage occurs.
The SI equivalent of the rem is: - ✔✔The sievert
