DNA Structure and Base Pairing
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Questions and Answers

What is the significance of the sequence of nucleotides in DNA?

  • It determines the information encoded in the DNA molecule (correct)
  • It determines the type of sugar molecule in the DNA structure
  • It determines the shape of the DNA double helix
  • It determines the type of nitrogenous base paired with another

    • What is the characteristic of a purine base in DNA?

  • It has a two-ring structure (correct)
  • It has a one-ring structure
  • It is always paired with another purine base
  • It is always paired with a pyrimidine base

    • What is the process by which DNA makes a copy of itself?

  • Translation
  • DNA replication (correct)
  • Transcription
  • Protein synthesis

    • What is the role of RNA in the process of protein synthesis?

    <p>To transmit the DNA message from the nucleus to the rest of the cell</p> Signup and view all the answers

    What is the result of the base pairing rule in DNA?

    <p>A purine base is always paired with a pyrimidine base</p> Signup and view all the answers

    What is the primary function of messenger RNA (mRNA) in protein synthesis?

    <p>To carry genetic information from DNA to the ribosome</p> Signup and view all the answers

    What is the characteristic of the DNA replication process?

    <p>It is a semi-conservative process, where half of the old strand is saved</p> Signup and view all the answers

    During transcription, what is the role of RNA nucleotides?

    <p>To match up to complementary DNA nucleotides</p> Signup and view all the answers

    What is the chart that shows the correspondence between codons and amino acids?

    <p>Codon chart</p> Signup and view all the answers

    What is the process by which proteins are made from RNA?

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

    What is the term for the chromosomal material in its decondensed, threadlike state?

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

    What is the theory that explains how chromosomes carry genetic information?

    <p>Chromosomal Theory of Inheritance</p> Signup and view all the answers

    What percentage of DNA is similar between two random humans?

    <p>99.9%</p> Signup and view all the answers

    What is the function of proteins in living organisms?

    <p>To perform all the actions of living things</p> Signup and view all the answers

    What is the structure of DNA according to the Watson and Crick model?

    <p>A ladder-like structure called a Double Helix</p> Signup and view all the answers

    Who performed X-ray diffraction of DNA in 1952?

    <p>Rosalind Franklin</p> Signup and view all the answers

    What is the primary function of DNA?

    <p>To store genetic information</p> Signup and view all the answers

    What is the approximate number of base pairs in human DNA?

    <p>3 billion</p> Signup and view all the answers

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