Key Events in Evolutionary History Quiz
18 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What key properties of life are highlighted as crucial for the appearance of protocells?

  • Cell division and differentiation
  • Photosynthesis and respiration
  • Reproduction and metabolism (correct)
  • Mutation and genetic variation
  • Which bases were demonstrated to undergo abiotic synthesis spontaneously for RNA production in a 2016 study?

  • Adenine and uracil
  • Thymine and cytosine
  • Cytosine and uracil
  • Adenine and guanine (correct)
  • How are sedimentary rocks related to the fossil record?

  • They are the main source of radioactive isotopes used for dating fossils
  • They are the result of volcanic eruptions preserving fossils
  • They contain DNA remnants of ancient organisms
  • They provide a rich source of fossils as they are deposited in layers called strata (correct)
  • What is a key factor that biases the fossil record in favor of certain species?

    <p>Being abundant and widespread</p> Signup and view all the answers

    Which type of molecules can spontaneously form vesicles with a lipid bilayer in water?

    <p>Lipids and other organic molecules</p> Signup and view all the answers

    What crucial feature do vesicles exhibit that is essential for life?

    <p>Simple reproduction and metabolism</p> Signup and view all the answers

    What is a defining characteristic of eukaryotic cells according to the text?

    <p>Possession of mitochondria</p> Signup and view all the answers

    What is the main proposal of the endosymbiont theory?

    <p>Mitochondria and plastids were once free-living prokaryotes that became part of eukaryotic cells</p> Signup and view all the answers

    What does the 'snowball Earth' hypothesis propose?

    <p>Life was restricted to equatorial regions during periods of extreme glaciation</p> Signup and view all the answers

    According to evidence supporting endosymbiosis, what is a key similarity between mitochondria and prokaryotes?

    <p>Similarities in ribosome structure</p> Signup and view all the answers

    How did the early multicellular eukaryotes likely acquire their mitochondria and plastids?

    <p>As undigested prey or internal parasites</p> Signup and view all the answers

    What is suggested by the concept of serial endosymbiosis?

    <p>Mitochondria evolved before plastids through a series of endosymbiotic events</p> Signup and view all the answers

    What is one of the key pieces of evidence supporting the Endosymbiont Theory?

    <p>The presence of simple cells in protocells</p> Signup and view all the answers

    Which process is NOT part of the sequence proposed for the formation of very simple cells on early Earth?

    <p>Joining small molecules into macromolecules</p> Signup and view all the answers

    What was the nature of Earth's early atmosphere according to the hypothesis by A.I. Oparin and J.B.S. Haldane?

    <p>Reducing (electron-adding) environment</p> Signup and view all the answers

    Which scientific theory is associated with the concept that mitochondria and chloroplasts were once free-living prokaryotic cells engulfed by a larger host cell?

    <p>Endosymbiont Theory</p> Signup and view all the answers

    The Murchison meteorite contained key organic molecules such as lipids, simple sugars, and nitrogenous bases, supporting the idea that:

    <p>Organic molecules can be found in space</p> Signup and view all the answers

    Which event is NOT associated with early Earth conditions contributing to the origin of life?

    <p>Mass extinctions</p> Signup and view all the answers

    More Like This

    The Cenozoic Eon
    17 questions

    The Cenozoic Eon

    CrispPrairie avatar
    CrispPrairie
    American Revolutionary War Events
    8 questions
    Paleozoic Era: Evolution and Extinctions
    10 questions
    Use Quizgecko on...
    Browser
    Browser