Radiation Biology QUESTIONS WITH WELL VERIFIED
ANSWERS
When x-rays enter the body, they interact at the atomic level to cause _________________.
Ionization.
Response of living systems to ionizing radiation is called ______________.
Radiobiology.
What are the 2 uses of xray?
1. diagnostic imaging.
2. radiotherapy.
Ionization changes the [blank] of molecules.
Structure.
______________ is the process of removing an electron from an electrically neutral atom to
produce an ion pair.
Ionization.
An atom or subatomic particle with a positive or negative charge is a _____________.
Ion.
In ionization, an x-ray + a neutral atom produces _____________.
An ejected negative ion (e-) and positive ion remaining in the atom.
What are the 2 types of ionizing radiation?
Electromagnetic and particulate.
Examples of electromagnetic ionizing radiation include _______________.
X-rays and gamma rays.
Does electromagnetic radiation have mass or charge?
No.
_______________ are manmade and produced by a machine, where as ____________ are
produced naturally when radioactive materials decay.
, X-rays, gamma rays.
________________ consists of particles that have mass and travel at high speeds.
Particulate radiation.
Examples of particulate ionizing radiation include _________________.
Alpha particles (helium nuclei), electrons (beta particles), protons (hydrogen nuclei), and
neutrons.
Does particulate radiation have mass and charge?
Yes.
Which type of ionizing radiation travels faster and can cause more damage due to its mass?
Particulate radiation.
What are 2 types of biologic effects of radiation on tissue?
Stochastic effect and deterministic effect.
This biologic effect occurs by chance, usually without a threshold level of dose.
Stochastic effect.
**random occurence, cannot predict the effect from person to person.
The probability of a stochastic effect is increased with [blank], but the severity of the response is
[blank] to the dose.
Increasing doses, not proportional.
**Ex: two people may get the same dose of radiation, but the response will not be the same in
both people.
What kind of biologic effect is seen in the following situation: Two people may get the same
dose of radiation, but the response will not be the same in both people?
Stochastic effect.
Give 2 examples of stochastic effects.
Heritable effects and cancer.
ANSWERS
When x-rays enter the body, they interact at the atomic level to cause _________________.
Ionization.
Response of living systems to ionizing radiation is called ______________.
Radiobiology.
What are the 2 uses of xray?
1. diagnostic imaging.
2. radiotherapy.
Ionization changes the [blank] of molecules.
Structure.
______________ is the process of removing an electron from an electrically neutral atom to
produce an ion pair.
Ionization.
An atom or subatomic particle with a positive or negative charge is a _____________.
Ion.
In ionization, an x-ray + a neutral atom produces _____________.
An ejected negative ion (e-) and positive ion remaining in the atom.
What are the 2 types of ionizing radiation?
Electromagnetic and particulate.
Examples of electromagnetic ionizing radiation include _______________.
X-rays and gamma rays.
Does electromagnetic radiation have mass or charge?
No.
_______________ are manmade and produced by a machine, where as ____________ are
produced naturally when radioactive materials decay.
, X-rays, gamma rays.
________________ consists of particles that have mass and travel at high speeds.
Particulate radiation.
Examples of particulate ionizing radiation include _________________.
Alpha particles (helium nuclei), electrons (beta particles), protons (hydrogen nuclei), and
neutrons.
Does particulate radiation have mass and charge?
Yes.
Which type of ionizing radiation travels faster and can cause more damage due to its mass?
Particulate radiation.
What are 2 types of biologic effects of radiation on tissue?
Stochastic effect and deterministic effect.
This biologic effect occurs by chance, usually without a threshold level of dose.
Stochastic effect.
**random occurence, cannot predict the effect from person to person.
The probability of a stochastic effect is increased with [blank], but the severity of the response is
[blank] to the dose.
Increasing doses, not proportional.
**Ex: two people may get the same dose of radiation, but the response will not be the same in
both people.
What kind of biologic effect is seen in the following situation: Two people may get the same
dose of radiation, but the response will not be the same in both people?
Stochastic effect.
Give 2 examples of stochastic effects.
Heritable effects and cancer.
