The Origin of Life and Stellar Distances
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Questions and Answers

What phenomenon allows us to observe stars in the past?

  • Stellar distances (correct)
  • Time dilation
  • Light years
  • Starlight refraction
  • Why is the origin of life considered a unique event in the history of the universe?

  • It occurred billions of years ago
  • It signifies the emergence of life from non-life (correct)
  • It is related to the Big Bang theory
  • It marks the beginning of biological evolution
  • In the context of the universe's vastness, how does Earth compare?

  • It is relatively large compared to other planets
  • It is at the center of the universe
  • It is almost insignificant in size (correct)
  • It is a significant component of the universe
  • What is the main focus of the Big Bang theory?

    <p>The expansion of the universe</p> Signup and view all the answers

    How did hydrogen and helium eventually form according to the text?

    <p>Following a decrease in temperature post-expansion</p> Signup and view all the answers

    What gases were released from the molten mass covering the surface of early earth?

    <p>Water vapor, methane, carbondioxide, ammonia</p> Signup and view all the answers

    What did the UV rays from the sun break water into on early earth?

    <p>Hydrogen and Oxygen</p> Signup and view all the answers

    Who proposed that the first form of life could have come from pre-existing non-living organic molecules?

    <p>Oparin of Russia and Haldane of England</p> Signup and view all the answers

    What did S.L.Miller observe in his laboratory scale experiments in 1953?

    <p>Formation of amino acids</p> Signup and view all the answers

    What limited evidence led to the acceptance of the first part of the conjectured story - chemical evolution?

    <p>Formation of amino acids in laboratory experiments and analysis of meteorite content</p> Signup and view all the answers

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