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rad bio quiz 1
rad bio quiz 1 questions, ch 32, 33
Question | Answer |
---|---|
What does the law of bergone and triboneau state? | radiosensitivity increases with proliferation rate |
What is the difference between dose fractionation and protraction? | rate |
What occurs during meiosis 2? | no DNA replication, ea. Daughter cell divides and the DNA is split between the 2 |
Are stem cells radiosensitive? | yes |
What is the total number of somatic cells for a human somatic cell? | 23 |
What type of tissue is most radiosensitive? | bone marrow |
What is the least radiosensitive time for a human? | adulthood |
Radiation protection guidelines are based on what type of curve? | linear nonthreshhold |
Why is dose fractionation less effective at cell damage than a single acute dose? | cellular recovery occurs between doses |
What causes and altered DNA sequence in human cells? | gene mutation |
Which cell group is most radiosensitive? | lymphocytes and spermatogonia |
What is the most radiosensitive part of the cell cycle? | mitosis |
What is the RBE for diagnostic x-rays? | 1 |
What type of curve does occupational exposure follow? | nonlinear, threshold |
How are RBE and LET related? | RBE is directly proportional to LET |
During which stage of mitosis is radiation damage analyzed? | metaphase |
Vitamin K is a what? | radiosensitizer |