DNA Damage and Repair Quiz

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Questions and Answers

Which of the following is NOT a biological effect of radiation on DNA?

  • Carcinogenesis
  • Mutation
  • Cell killing
  • Protein synthesis (correct)

What is the principal target for the biologic effects of radiation?

  • DNA (correct)
  • RNA
  • Protein
  • Lipid

What is the structure of DNA?

  • Triple-helix
  • Single-stranded
  • Quadruple-helix
  • Double-helix (correct)

What is the backbone of each DNA strand made of?

<p>Sugar and phosphate groups (D)</p> Signup and view all the answers

What is the function of DNA repair pathways?

<p>To prevent DNA damage (D)</p> Signup and view all the answers

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Study Notes

Radiation and DNA

  • Mutagenesis is a biological effect of radiation on DNA
  • Radiation can cause gene mutation, chromosomal aberrations, and genetic instability

Target of Radiation

  • The principal target for the biologic effects of radiation is DNA itself

DNA Structure

  • DNA is a double-stranded helix
  • Two complementary strands of nucleotides twisted together

DNA Backbone

  • The backbone of each DNA strand is made of sugar molecules linked by phosphate groups

DNA Repair

  • The function of DNA repair pathways is to correct damaged DNA-lnduced mutations

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