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EXAM 2

QuestionAnswer
Which of the following is a category of white blood cell that is essential in fighting infections? Lymphocytes
In 1898, after suffering severe burns attributed to accumulated radiation exposure, this Boston dentist began investigating the potential hazards of radiation exposure and became the first known determined advocate of radiation protection was William Herbert Rollins.
A single absorbed dose of 2 Gyt can cause a radiation-induced skin erythema within 24 to 48 hours after irradiation.
The hematopoietic form of acute radiation syndrome is also called the bone marrow syndrome.
Radiation-induced genetic abnormalities are caused by unrepaired damage to DNA molecules in the sperm or ova of an adult.
Mutations in genes and DNA that occur at random as natural phenomena are called spontaneous mutations.
Which of the following late effects caused by exposure to ionizing radiation is considered to be most significant? Cancer.
Radiation-induced cataracts in humans follow a ______ dose–response relationship. threshold, nonlinear
Radium decays with a half-life of 1622 years.
The human body can incorporate radium into bone because it is chemically similar to calcium.
The term linear nonthreshold relationship implies that the biologic response to ionizing radiation is directly proportional to the dose all the way down to levels approaching zero.
What do agents such as specific chemicals, viruses, and ionizing radiation have in common? They are all mutagens that can increase the frequency of mutations.
Genetic mutations at the molecular level are called point mutations.
One micron (μm) = __________. 10–6 m
Which of the following is/are considered low-LET radiation(s)? X-rays and gamma rays
Created by: Jjpena02
 

 



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