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MEANS ASK THE PROFESSOR Chapter 1 Study Questions
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MEANS ASK THE PROFESSOR Chapter 1 Study Questions

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Questions and Answers

What term is used to refer to the living parts of the world?

  • Non-living entities
  • Biological elements
  • Organisms (correct)
  • Inanimate objects
  • Which of the following is an example of a unicellular organism?

  • Elephant
  • Lion
  • Escherichia coli (correct)
  • Sunflower
  • What do liposomes, prokaryotic cells, and eukaryotic cells have in common?

  • Harboring a common genetic code (correct)
  • Involvement in photosynthesis
  • Being multicellular
  • Originating from non-living matter
  • When did life first appear on Earth?

    <p>4 billion years ago</p> Signup and view all the answers

    What is the main implication of the eight common characteristics shared by most organisms?

    <p>They indicate a common origin for all life on Earth</p> Signup and view all the answers

    Which of the following statements accurately describes the relationship between all organisms today?

    <p>They evolved from one single life form</p> Signup and view all the answers

    What type of cells first evolved the ability to perform photosynthesis?

    <p>Prokaryotes called cyanobacteria</p> Signup and view all the answers

    What atmospheric change resulted from the proliferation of oxygen gas by photosynthetic prokaryotes?

    <p>Increase in oxygen levels</p> Signup and view all the answers

    Which metabolic process evolved as a result of the accumulation of oxygen gas in Earth's atmosphere?

    <p>Aerobic metabolism</p> Signup and view all the answers

    What process led to the evolution of eukaryotic cells with membrane-bound organelles?

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

    In what order did the evolution of photosynthesis occur in the history of life on Earth?

    <p>Before evolution of multicellularity</p> Signup and view all the answers

    What is the significance of stromatolites in the context of early Earth?

    <p>&quot;Greek for 'layered rock,' composed of sediment grains&quot;</p> Signup and view all the answers

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