LRA 215 FINAL EXAM BIO 84
QUESTION
Which of the following is defined as a branch of medical science that deals with the incidence,
distribution, and control of disease in a population? - ✔✔ correct answer Epidemiology
Which of the following describes radiation damage that increases the probability of causing a late
effect but will not increase the severity of the effect? - ✔✔ correct answer Stochastic
Radiation-induced lung cancer follows which dose-response relationship? - ✔✔ correct answer
linear, nonthreshold
Radiation-induced thyroid cancer is judged to be - ✔✔ correct answer Linear, Nonthreshold
The annual effective limit for the fetus of an occupational worker is - ✔✔ correct answer 0.5 rem
Radiation sickness, known as _____, is a serious illness that occurs when the entire body receives a
high dose of radiation, usually over a short period of time. - ✔✔ correct answer Acute Radiation
Syndrome (ARS)
The lethal dose required to kill 50% of the population in 30 days is the definition of - ✔✔ correct
answer 50/30
In the _____ stage, the person appears to be symptom-free. - ✔✔ correct answer latent
Order the response stages the acute radiation syndrome in order from 1st symptom to last - ✔✔
correct answer Prodromal.
latent period.
manifest illness.
recovery.
Reddening of the skin caused by radiation damage is referred to as: - ✔✔ correct answer Erythema
Death from a single dose of whole body irradiation primarily involves damage to the: - ✔✔ correct
answer Bone marrow.
, LRA 215 FINAL EXAM BIO 84
QUESTION
Which is the following is not an early response to radiation? - ✔✔ correct answer breast cancer.
Which of the following is not an acute local tissue effect of radiation exposure? - ✔✔ correct answer
Cataracts
Epilation or alopecia are terms for - ✔✔ correct answer hair loss
Radiation-induced cataracts have an average latent period of approximately _______ years - ✔✔
correct answer 15 years
_____ is an average calculated from the gonadal dose received by the entire population. - ✔✔
correct answer Genetically significant dose (GSD)
The dose of radiation required per generation to double the spontaneous mutation rate is the
definition of - ✔✔ correct answer Doubling Dose
When does the greatest radiation hazard to a fetus exist? - ✔✔ correct answer First trimester
Which of the following do not affect cell response to radiation? - ✔✔ correct answer linear energy
transfer (LET)
_________ is a measure of the energy transferred to material as an ionizing particle travels through
it. This measure is used to quantify age effects of ionizing radiation on biological specimens. - ✔✔
correct answer Linear energy transfer (LET)
_________ refers to the enhancement of therapeutic or detrimental effect of ionizing radiation due
to the presence of oxygen. - ✔✔ correct answer oxygen enhancement ratio (OER)
Nonthreshold - ✔✔ correct answer assumes that any radiation dose produces an effect
As linear energy transfer (LET) increases , how is relative biologic effectiveness (RBE) affected? - ✔✔
correct answer increased
QUESTION
Which of the following is defined as a branch of medical science that deals with the incidence,
distribution, and control of disease in a population? - ✔✔ correct answer Epidemiology
Which of the following describes radiation damage that increases the probability of causing a late
effect but will not increase the severity of the effect? - ✔✔ correct answer Stochastic
Radiation-induced lung cancer follows which dose-response relationship? - ✔✔ correct answer
linear, nonthreshold
Radiation-induced thyroid cancer is judged to be - ✔✔ correct answer Linear, Nonthreshold
The annual effective limit for the fetus of an occupational worker is - ✔✔ correct answer 0.5 rem
Radiation sickness, known as _____, is a serious illness that occurs when the entire body receives a
high dose of radiation, usually over a short period of time. - ✔✔ correct answer Acute Radiation
Syndrome (ARS)
The lethal dose required to kill 50% of the population in 30 days is the definition of - ✔✔ correct
answer 50/30
In the _____ stage, the person appears to be symptom-free. - ✔✔ correct answer latent
Order the response stages the acute radiation syndrome in order from 1st symptom to last - ✔✔
correct answer Prodromal.
latent period.
manifest illness.
recovery.
Reddening of the skin caused by radiation damage is referred to as: - ✔✔ correct answer Erythema
Death from a single dose of whole body irradiation primarily involves damage to the: - ✔✔ correct
answer Bone marrow.
, LRA 215 FINAL EXAM BIO 84
QUESTION
Which is the following is not an early response to radiation? - ✔✔ correct answer breast cancer.
Which of the following is not an acute local tissue effect of radiation exposure? - ✔✔ correct answer
Cataracts
Epilation or alopecia are terms for - ✔✔ correct answer hair loss
Radiation-induced cataracts have an average latent period of approximately _______ years - ✔✔
correct answer 15 years
_____ is an average calculated from the gonadal dose received by the entire population. - ✔✔
correct answer Genetically significant dose (GSD)
The dose of radiation required per generation to double the spontaneous mutation rate is the
definition of - ✔✔ correct answer Doubling Dose
When does the greatest radiation hazard to a fetus exist? - ✔✔ correct answer First trimester
Which of the following do not affect cell response to radiation? - ✔✔ correct answer linear energy
transfer (LET)
_________ is a measure of the energy transferred to material as an ionizing particle travels through
it. This measure is used to quantify age effects of ionizing radiation on biological specimens. - ✔✔
correct answer Linear energy transfer (LET)
_________ refers to the enhancement of therapeutic or detrimental effect of ionizing radiation due
to the presence of oxygen. - ✔✔ correct answer oxygen enhancement ratio (OER)
Nonthreshold - ✔✔ correct answer assumes that any radiation dose produces an effect
As linear energy transfer (LET) increases , how is relative biologic effectiveness (RBE) affected? - ✔✔
correct answer increased
