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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?
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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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