Cell Systems Biology: History and Discoveries
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Questions and Answers

Who discovered that DNA consists of proteins and nucleic acids and isolated the nitrogen bases of nucleic acids?

  • Albrecht Kossel (correct)
  • Erwin Chargaff
  • Sir Archibald Garrod
  • Friedrich Miescher
  • Who connected genes to enzymes by studying bread mould, proposing the 'one gene-one enzyme' hypothesis?

  • Friedrich Miescher
  • Beadle & Tatum (correct)
  • Sir Archibald Garrod
  • Albrecht Kossel
  • Who showed that DNA, not protein, carries the genetic information by studying Streptococcus pneumoniae?

  • Alfred Hersey and Martha Chase
  • Sir Archibald Garrod
  • Erwin Chargaff
  • Oswald Avery, Colin MacLeod, and Maclyn McCarty (correct)
  • Who proved that DNA is the hereditary material by studying radiolabelled bacteriophage?

    <p>Alfred Hersey and Martha Chase</p> Signup and view all the answers

    Who found that the ratios of adenine (A) to thymine (T) and guanine (G) to cytosine (C) in DNA are equal?

    <p>Erwin Chargaff</p> Signup and view all the answers

    What is the study of an organism's genome, including both coding and non-coding regions?

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

    Which molecule contains the biological instructions that allow an organism to develop, survive, and reproduce?

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

    Where is DNA found in eukaryotic organisms?

    <p>Nucleus and mitochondria</p> Signup and view all the answers

    What is the structure of DNA composed of?

    <p>$Phosphate$ $group$ + $sugar$ + $nitrogen$ $base$</p> Signup and view all the answers

    What does DNA replication involve?

    <p>$Producing$ $two$ $identical$ $copies$ $of$ $DNA$ from one original DNA molecule</p> Signup and view all the answers

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