8.
A radioactive material which decays through five half-lives will result in
__________ of the original amount.
a.
1/8.
b.
1/16.
c.
1/32.
d.
1/61.
9.
The roentgen is a unit of x or gamma radiation:
a.
Exposure.
b.
Absorbed dose.
c.
Accumulative dose.
d.
Energy absorption.
10.
The rad represents an absorption of:
a.
93 ergs/gram.
b.
93 calories/gram.
c.
100 ergs/gram.
d.
100 calories/gram.
11.
When radiation is absorbed by a living cell, the primary damage is by:
a.
Formation of cell poisons.
b.
Genetic rearrangement within the cell nucleus.
c.
Loss of cell protoplasm and nuclear material.
d.
Ionization and excitation of the atoms and molecules of that cell.
MD0180
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