Which of the following statements about radiation is true?
A)Your body contains a number of radioactive isotopes.
B)One rem is enough to kill approximately 50 percent of the average population.
C)Radiation damages cells beyond repair.
D)Radiation can make you glow in the dark.

Question

Quizplus · Accepted Answer

It is true that your body naturally contains a number of radioactive isotopes, such as potassium-40 and carbon-14. However, the levels are generally very low and not harmful to your health.

Answer: B 
 This statement is false. One rem of radiation exposure is not enough to kill 50 percent of the average population.

Answer: C 
 This statement is partially true. High levels of radiation exposure can damage cells beyond repair, but lower levels can still cause damage that the body can repair.

Answer: D 
 This statement is false. Radiation exposure does not make you glow in the dark.

Which of the Following Statements About Radiation Is True