Rad Bio: Review Questions Ch. 2 Questions and Answers Rated A+

Rad Bio: Review Questions Ch. 2 Questions and Answers Rated A+ What is the primary function of DNA in living cells? To store and transmit genetic information. Which of the following is a natural source of ionizing radiation? Cosmic rays from space. What does the term "radiosensitivity" refer to? The susceptibility of cells, tissues, or organisms to the harmful effects of radiation. Which type of radiation has the highest ionization potential? Alpha particles. What is the most common effect of low-level radiation exposure on human cells? Induction of single-strand DNA breaks. 2 Which of the following is a direct effect of radiation on DNA? Breakage of chemical bonds within the DNA molecule. What is the primary mechanism by which radiation causes biological damage? Ionization of molecules within cells. Which of the following cells is most radiosensitive? Lymphocytes. What is the term for the repair of DNA damage caused by radiation? DNA repair mechanisms. Which of the following is a late effect of radiation exposure? Development of cancer. What is the term for the process by which cells die due to radiation-induced damage? Apoptosis. 3 Which of the following tissues is most radiosensitive? Bone marrow. What is the term for the process by which cells repair radiation-induced DNA damage? DNA repair mechanisms. Which of the following is a stochastic effect of radiation exposure? Cancer induction. What is the term for the process by which cells repair radiation-induced DNA damage? DNA repair mechanisms. Which of the following is a deterministic effect of radiation exposure? Cataract formation. What is the term for the process by which cells repair radiation-induced DNA damage? DNA repair mechanisms. 4 Which of the following is a stochastic effect of radiation exposure?