5-7 Quiz Questions Flashcards
which of the following groups of cells is most radiosensitive?
Lymocytes
Inorganic materials are compounds that
Does not contain carbon
which of the following curves illustrates the radiation sensitivity of a particular type of cell?
Cell survival curve
When free radicals previously produced by the interaction of radiation with water molecules act on a molecule such as DNA, the damaging action of ionizing radiation is indirect in the sense that the radiation is not the immediate cause of injury to the macromolecule. What is the immediate cause of this damage!
A. Excitation of the atoms of the biologic macromolecules
B. The free radicals produced by
me of radiation with water molecules
C. Enzymes released from biologic macromolecules
D. The recombining of a posilively charged water molecule with an electron
The free radicals produced by the interaction of radiation with water molecules
When changing employment, what must a radiation worker convey to his/her new employer?
A. A list of all fluoroscopic procedures
nerformed dally
B. A list of all radiographic procedures performed daily
C. Data pertinent to accumulated permanent equivalent dose to be placed on tile
D. A report of all procedures pertormed when “on call after regular hours
Data pertinent to accumulated permanent equivalent dose to be placed on filed
Which of the following groups of cells is least radiosensitive?
Adult nerve cells
Which of the following devices contains an aluminum oxide detector?
A. Optically stimulated luminescence dosimeter
B. Proportional counter
C. Personnel direct ion storage dosimeter
D. Thermoluminescent ring dosimeter
Optically stimulated luminescence dosimeter
What do optically stimulated luminescence dosimeters. thermoluminescent ring dosimeters, andpersonnel direct ion storage dosimeters have in common?
A. These devices are all used for personnel monitoring.
B. These devices are all used for area monitoring
C. Each of these devices can onlv be used tor personnel monitoring for a maximum of 6 months.
D. These devices all use the same sensing material to detect ionizing radiation.
These devices are all used for personnel monitoring.
When LET increases, the chance of a significant biologic response in the radiosensitive DNA
macromolecule
also increases.
Whenever the letter «M’ appears under the current monitoring period or in the cumulative columns
of a personnel monitoring report, it signifies that a (an)
A. maximal equivalent dose has been exceeded during that time.
B. mistake has been made in recording the equivalent dose.
C.) equivalent dose below the minimum measurable radiation quantity was recorded during that time.
d. equivalent dose higher than the minimum measurable radiation quantity was recorded during that time.
equivalent dose below the minimum measurable radiation quantity was recorded during that time.
How many different amino acids are involved in protein synthesis in humans?
22
Because the master molecule is unique in any given cell, no similar molecules in the cell are avallable to replace it; if a critical location on the master molecule is a target receiving multiple hits From ionizing radiation, the master molecule may be inactivated. If this occurs, what is the consequence for the affected cell?
A. Disruption of cell chemistry only.
B. Increased pressure on the cell membrane leading to immediate rupture.
C. Loss of all intracellular fluid.
D. Normal cell function will cease, and the cell will die
Normal cell function will cease, and the cell will die
Direct action may occur after exposure to any type of radiation
but it is much more likely to occur
after exposure to
A. high-LET radiation such as alpha particles.
B. low-LET radiation such as gamma rays.
C. nonionizing radiation such as microwaves.
D. low-LET radiation such as x-rays.
high-LET radiation such as alpha particles.
The term apoptosis is synonymous with
programmed cell death
Because the genetic intormation to be passed on to tuture generations 1s contained in the strict sequence of nitrogenous bases. the loss or change of a base in the DNA chain represents a (an)
A. aneuploidv.
B. bleb.
C. covalent cross-ink
D. mutation.
mutation.
