July 31, 2014Quiz answers: 1. A –omit?2. D3. D4. B5. A6. D7. A8. D9. B 10. D11. A12. A13. A- Lead is at the end of all the naturally occurring radioactive materials. - Radioactive sensitivity of cells cells are more rapidly dividing at a young age. o Actively diving cells are more sensitive than slowing dividing cellso The shorter the time between mitoses, the greater the sensitivity of cellso Embryonic and immature cells are more sensitive than mature cells of the same tissue- Mutations over short time are more dangerous than those over long periods of time- Radium goes to the bone, iodine goes to thyroid- 99Mo is the number one radioactive substance used in hospitals can tag on to drugs to get it into the area that it was. ½ life of about 3 days decays into 99Tc- Hydrogen tritium has a ½ life of 12.26 years, very low Beta
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