Radiation Effects on DNA and Chromosome Aberrations
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Questions and Answers

What is the primary effect of radiation on the viscosity of a DNA solution?

  • It has no effect on the viscosity of the solution
  • It increases the viscosity of the solution
  • It reduces the viscosity of the solution (correct)
  • It makes the solution more alkaline

    • What type of lesion is characterized by a change that results in the impairment or loss of function at a single chemical bond?

  • Chromosomal aberration
  • Point lesion (correct)
  • Double-strand break
  • Cross-linking

    • In which stage of the cell cycle does the DNA separate into two daughter DNA molecules?

  • G2 phase
  • S phase (correct)
  • M phase
  • G1 phase

    • What is the primary function of chromosomes in a cell?

    <p>To control the growth and development of the cell</p> Signup and view all the answers

    What is the effect of radiation on proteins in a cell?

    <p>It has no effect on proteins</p> Signup and view all the answers

    What is the result of cross-linking in a macromolecular solution?

    <p>It increases the viscosity of the solution</p> Signup and view all the answers

    What is the primary molecule affected by radiation in a cell?

    <p>DNA</p> Signup and view all the answers

    What is the purpose of measuring viscosity in a macromolecular solution?

    <p>To determine the degree of main-chain scission</p> Signup and view all the answers

    What is the structure of DNA during the G1 phase of interphase?

    <p>Double-stranded</p> Signup and view all the answers

    What is the effect of radiation on the size of macromolecules?

    <p>It reduces the size of the macromolecules</p> Signup and view all the answers

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