LRA 215 biological effects of radiation finsal
review
1. refers to the enhancement of theraupetic or detrimental effect of
ionizing radiation due to the presence of oxygen: oxygen enhancement
ratio (OER)
2.which of the following is a graphical representation of the relationship
between radiation dose and observed response, in which any dose may
have a potential effect, and there is a direct relationship between dosse
and effect?: linear, non threshold done-response curve
3.which is not another term for undifferentiated cells: mature cells
4. is a measure of the capacity of a specific ionizing radiation to
produce a specific biological effect, expressed relative to a reference
radiation, such as radium, gamma rays or 250 kev x-rays: relative biological
effectiveness (RBE)
5. 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 rediation on biological specimens: linear energy transfer
(LET)
6.which of the following statements is Not true regarding the link
between radiation dose and genetic effects?: the link has been
demostrated in human studies
7.hypoxia is defined as have an excessive level of oxygen in a cell: false
8.cells which are considered highly radiosensitive include: lymphocytes,
sper- matogonia, erythroblasts and intestinal crypt cells
9.a graphical representation of observed effects compared with radiation
dose is termed a: dose- response relationship (curve)
10.which of the following tissues is LEAST likely to develop into cancer
after beign exposed to ionizing radiation: nerve cells
11.how does oxygen retention affect cell radiosensitive?: increases
radiosen- sitivity
12.nonthreshold: assumes that any radiation produces an effect
13.as linear energy transfer (LET) increses, how is relative biological
effec- tiveness (RBE) affected?: with an increase in LET, RBE also
increases
14.which of the following do not affect cell response to radiation?:
oxygen initial distributors (OID)
15.there is usually a before the symptoms of acute radiation syn-
dromes appear: latent period
16.a single chromosome aberration represents to the DNA within
the chromosome: severe damage
1/
4
review
1. refers to the enhancement of theraupetic or detrimental effect of
ionizing radiation due to the presence of oxygen: oxygen enhancement
ratio (OER)
2.which of the following is a graphical representation of the relationship
between radiation dose and observed response, in which any dose may
have a potential effect, and there is a direct relationship between dosse
and effect?: linear, non threshold done-response curve
3.which is not another term for undifferentiated cells: mature cells
4. is a measure of the capacity of a specific ionizing radiation to
produce a specific biological effect, expressed relative to a reference
radiation, such as radium, gamma rays or 250 kev x-rays: relative biological
effectiveness (RBE)
5. 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 rediation on biological specimens: linear energy transfer
(LET)
6.which of the following statements is Not true regarding the link
between radiation dose and genetic effects?: the link has been
demostrated in human studies
7.hypoxia is defined as have an excessive level of oxygen in a cell: false
8.cells which are considered highly radiosensitive include: lymphocytes,
sper- matogonia, erythroblasts and intestinal crypt cells
9.a graphical representation of observed effects compared with radiation
dose is termed a: dose- response relationship (curve)
10.which of the following tissues is LEAST likely to develop into cancer
after beign exposed to ionizing radiation: nerve cells
11.how does oxygen retention affect cell radiosensitive?: increases
radiosen- sitivity
12.nonthreshold: assumes that any radiation produces an effect
13.as linear energy transfer (LET) increses, how is relative biological
effec- tiveness (RBE) affected?: with an increase in LET, RBE also
increases
14.which of the following do not affect cell response to radiation?:
oxygen initial distributors (OID)
15.there is usually a before the symptoms of acute radiation syn-
dromes appear: latent period
16.a single chromosome aberration represents to the DNA within
the chromosome: severe damage
1/
4
