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List of top Biology Questions on Structure of DNA and RNA

Given below are two statements: Statement I: In the RNA world, RNA is considered the first genetic material evolved to carry out essential life processes. RNA acts as a genetic material and also as a catalyst for some important biochemical reactions in living systems. Being reactive, RNA is unstable.
Statement II: DNA evolved from RNA and is a more stable genetic material. Its double helical strands being complementary, resist changes by evolving repair mechanisms. In the light of the above statements, choose the most appropriate answer from the options given below:
  • NEET (UG) - 2025
  • NEET (UG)
  • Biology
  • Structure of DNA and RNA
Bond present between two nucleotides on a single strand of DNA is:
  • MHT CET - 2024
  • MHT CET
  • Biology
  • Structure of DNA and RNA
Which of the following is not present in RNA?
  • MHT CET - 2024
  • MHT CET
  • Biology
  • Structure of DNA and RNA
Approximately how long is the DNA molecule in a single human cell if stretched out?
  • MHT CET - 2024
  • MHT CET
  • Biology
  • Structure of DNA and RNA
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