RADT_152_Unit_6_Exam - RADT 152 Radiation Protection Unit 6...

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Unformatted text preview: RADT 152 Radiation Protection Unit 6 Exam Radiation Biology 2 6.0 Radiation Biology Directions: 1. Write your name and the date on your Scantron form. Identity the subject as the course number (for example, RADT 101) along with the test number (for example, Unit 1). 2. For each of the questions below, select the best answer to the question. 3. Using a No. 2 Pencil fill in the appropriate answer on the answer sheet. 4. Erase unwanted answers completely. Questions with two or more filled in answer spaces are graded as incorrect. 5. Answer all questions. 6. You have a mazimum 15 minutes to complete the following 25 questions. (Note this time factor approximates the amount of time you would be allowed to answer the same number of questions on the Registry examination in radiography.) ------------------------------------------------------------------------------------------ 1. How do high-energy charged particles ionize atoms? A. B. C. D. E. 2. Electromagnetic interaction Electric interaction Magnetic interaction Compton interaction Photoelectric interaction Which of the following is an important concept in understanding injury caused by ionizing radiation? A. B. C. D. E. Quality factor (QF) Point mutation Linear energy transfer (LET) DNA Oxygen exposure ratio (OER) 3 3. What is low-let radiation? A. B. C. D. E. 4. Which of the following is an example of high-LET radiation? A. B. C. D. E. 5. low-LET high-LET All of the above None of the above What are the levels of biological damage that result from exposure to ionizing radiation? A. B. C. D. E. 7. Alpha particles Ions of heavy nuclei Charged particles released from interactions between neutrons and atoms Low-energy neutrons All of the above Which type of radiation is more destructive? A. B. C. D. 6. Radioactive radiation Gamma radiation Magnetic radiation Electric radiation Electro-magnetic radiation Molecular Cellular Organic All of the above Only A & B Cancer and genetic defects are examples of ________ effects? A. B. C. D. Stochastic Nonstochastic Birth DEterministic 4 8. Which action of ionizing radiation is most harmful to the human body? A. B. C. D. 9. What is the lethal dose of radiation generally estimated to be? A. B. C. D. E. 10. Covalent Cross-linking Law of Bergonie and Tribondeau Programmed Cell Death Target Theory How many weeks does the window of maximal sensitivity cover in gestation? A. B. C. D. E. 12. 1-50 rad 50-100 rad 100-200 rad 200-300 rad 300-400 rad Which of the following may be used to explain cell death and nonfatal cell abnormalities cause by exposure to radiation? A. B. C. D. 11. Direct Action Indirect Action Epidemiologic Action Mitotic Action From From From From From week week week week week 1 to week 4 18 to week 25 8 to week 15 6 to week 20 20 to week 30 What radiation dose can cause permanent sterility? A. B. C. D. E. 500-600 400-500 250-350 200-300 100-200 rad rad rad rad rad 5 13. How much radiation to the ovaries would cause permanent sterility in a female? A. B. C. D. E. 14. True False What is a factor for somatic and genetic damage? A. B. C. D. E 18. True False Threshold is a point at which a response or reaction to an increasing stimulation first occurs? A. B. 17. Cell Survival Curve Hypoxic Cell Measurement Curve Radiolysis of Water Radiation Dose-response Curve The radiation dose response relationship demonstrates the observed effects of radiation exposure in relation to the dose of radiation received. A. B. 16. rad rad rad rad rad Which of the following is a method to display the sensitivity of a particular type of cell to radiation? A. B. C. D. 15. 200 500 400 300 100 The amount of body area exposed The specific body parts exposed The quantity of ionizing radiation None of the above All of the above Somatic effects are biologic damage sustained by living organisms as a consequence of exposure to ionizing radiation? A. B. True False 6 19. Early non-stochastic somatic effects appear within _________? A. B. C. D. E. 20. Which of the following is an effect of high dose exposure? A. B. C. D. E. 21. 100 rad 500 rad 600 rad 1000 rad 5000 rad Late somatic effects may be a result of? A. B. C. D. E. 23. Nausea Fatigue Permanent sterility All of the above None of the above Cerebrovascular syndrome results when the central nervous system and cardiovascular system receives doses of _________ rad? A. B. C. D. E. 22. Minutes Hours Days Weeks All of the above High radiation doses Individual low doses sustained over years Chronic low level doses sustained over years All of the above None of the above Effects that do not have a threshold are called late stochastic somatic effects (probabilistic)? A. B. True False 7 24. The deposition of energy per unit mass by ionizing radiation in the patient’s body tissue is called? A. B. C. D. E. 25. Linear energy transfer Equivalent dose Absorbed dose Effective dose Collective effective dose Which of the following is a type of late somatic effects? A. B. C. D. E. Carcinogenesis Cataractogenesis Embryologic effects All of the above None of the above ...
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