LRA 216 FINALS EXAM REDBIO 100
QUESTIONS AND ANSWERS13
Which of the following is the branch of science concerned with the methods of interaction and
the effects of ionizing radiation on living systems? - ANSWERS-radiobiology
Which of the following is credited with the discovery of x-rays in 1895? - ANSWERS-Wilhelm
Conrad Roentgen
Which of the following, in 1906, observed the effects of radiation by exposing rodent testicles to
x-rays? - ANSWERS-Bergonie & Tribondeau
Rick discovered that oxygen increases the cell-killing effect of a given dose of radiation. This is
known as which of the following? - ANSWERS-oxygen effect
The Law of Bergonie infers which of the following? - ANSWERS-stem cells are more
radiosensitive than mature cells
Which of the following is a measure of the ionization of air created by x- and gamma-radiation?
- ANSWERS-Roentgen (R)
Which of the following describes the energy that is absorbed in matter from any type of ionizing
radiation and is considered the unit of absorbed dose? - ANSWERS-RAD
Which of the following is the unit of dose equivalent, or occupational exposure? - ANSWERS-
REM
, Which of the following is the SI unit for Roentgen (R)? - ANSWERS-Coulomb/kilogram
Which of the following is the SI unit for the rad? - ANSWERS-Gray
Which of the following is the SI unit for the REM? - ANSWERS-Sievert
What is the current annual effective dose limit for occupational exposure? - ANSWERS-0.05
Sievert
Cells which are considered highly radiosensitive include.
Lymphocytes,
spermatogonia,
erythroblasts,
and intestinal crypt cells - ANSWERS-all the above
Which of the following affects cell responses to radiation?
1. linear energy transfer (LET)
2. relative biologic effectiveness (RBE)
3. oxygen enhancement ratio (OER) - ANSWERS-ALL THE ABOVE
_____ is a measure of the energy transferred to material as an ionizing particle travels through
it. This measure is used to quantify the effects of ionizing radiation on biological specimens. -
ANSWERS-Linear Energy Transfer (LET)
A graphical representation of observed effects compared with radiation dose is termed a -
ANSWERS-Dose-response curve
QUESTIONS AND ANSWERS13
Which of the following is the branch of science concerned with the methods of interaction and
the effects of ionizing radiation on living systems? - ANSWERS-radiobiology
Which of the following is credited with the discovery of x-rays in 1895? - ANSWERS-Wilhelm
Conrad Roentgen
Which of the following, in 1906, observed the effects of radiation by exposing rodent testicles to
x-rays? - ANSWERS-Bergonie & Tribondeau
Rick discovered that oxygen increases the cell-killing effect of a given dose of radiation. This is
known as which of the following? - ANSWERS-oxygen effect
The Law of Bergonie infers which of the following? - ANSWERS-stem cells are more
radiosensitive than mature cells
Which of the following is a measure of the ionization of air created by x- and gamma-radiation?
- ANSWERS-Roentgen (R)
Which of the following describes the energy that is absorbed in matter from any type of ionizing
radiation and is considered the unit of absorbed dose? - ANSWERS-RAD
Which of the following is the unit of dose equivalent, or occupational exposure? - ANSWERS-
REM
, Which of the following is the SI unit for Roentgen (R)? - ANSWERS-Coulomb/kilogram
Which of the following is the SI unit for the rad? - ANSWERS-Gray
Which of the following is the SI unit for the REM? - ANSWERS-Sievert
What is the current annual effective dose limit for occupational exposure? - ANSWERS-0.05
Sievert
Cells which are considered highly radiosensitive include.
Lymphocytes,
spermatogonia,
erythroblasts,
and intestinal crypt cells - ANSWERS-all the above
Which of the following affects cell responses to radiation?
1. linear energy transfer (LET)
2. relative biologic effectiveness (RBE)
3. oxygen enhancement ratio (OER) - ANSWERS-ALL THE ABOVE
_____ is a measure of the energy transferred to material as an ionizing particle travels through
it. This measure is used to quantify the effects of ionizing radiation on biological specimens. -
ANSWERS-Linear Energy Transfer (LET)
A graphical representation of observed effects compared with radiation dose is termed a -
ANSWERS-Dose-response curve
