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Questions and Answers
Which of the following is NOT a biological effect of radiation on DNA?
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?
What is the principal target for the biologic effects of radiation?
- DNA (correct)
- RNA
- Protein
- Lipid
What is the structure of DNA?
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?
What is the backbone of each DNA strand made of?
What is the function of DNA repair pathways?
What is the function of DNA repair pathways?
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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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