Question 1
A patient has a chest X-ray and receives 0.2 mSv of radiation. How many mrems did the patient receive?
◦ 2000 mrem
◦ 200 mrem
◦ 2 mrem
◦ 20 mrem
◦ 0.002 mrem
Question 2
The half-life of a radioisotope is ________.
◦ the time it takes for one-half of the sample to decay
◦ one-half of the time it takes for the radioisotope to completely decay to a nonradioactive isotope
◦ the time it takes for the radioisotope to lose one-half of its neutrons
◦ the time it takes for the radioisotope to become an isotope with one-half of the atomic weight of the original radioisotope
◦ the time it takes for the radioisotope to become an isotope with one-half the atomic number of the original radioisotope
Sporic life cycles
Life expectancy in Botswana
The life history of T cells
jellyfish life cycle
Growth and quality of life