Microbiology Basics
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Questions and Answers

What is the limitation of a light microscope in terms of resolution?

  • 0.2 micrometers (correct)
  • 0.2 millimeters
  • 0.2 nanometers
  • 0.2 Angstrom

    • What is the main difference between archaea and bacteria?

  • The ability to form spores
  • The presence of introns in the genome
  • The presence of a cell wall
  • The structure and extreme environments they inhabit (correct)

    • What is unique about viroids compared to viruses?

  • They do not have a protein coat (correct)
  • They are always spherical in shape
  • They can replicate on their own
  • They contain DNA instead of RNA

    • What is the function of a ribozyme?

    <p>To undergo a chemical reaction</p> Signup and view all the answers

    What is the likely characteristic of LUCA?

    <p>It was an extremophile</p> Signup and view all the answers

    What is the result of an endosymbiotic event between archaea and bacteria?

    <p>The formation of a eukaryote</p> Signup and view all the answers

    What is the purpose of probiotics?

    <p>To boost good bacteria</p> Signup and view all the answers

    What is the term for microbes that rely on the metabolic activity of other organisms to grow?

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

    What is the name of the structures formed by microbes in soil and dirt?

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

    What is the likely timing of the formation of the ancestors of bacteria and archaea?

    <p>3.5-3.7 billion years ago</p> Signup and view all the answers

    What is a common feature of archaea and eukaryotes?

    <p>Ability to thrive in extreme environments</p> Signup and view all the answers

    What is the primary function of a ribozyme?

    <p>To undergo chemical reactions</p> Signup and view all the answers

    What is the role of bacteria in the formation of stromatolites?

    <p>They are the primary structure-forming organisms</p> Signup and view all the answers

    What is the significance of cyanobacteria in Earth's history?

    <p>They are producers of oxygen</p> Signup and view all the answers

    What is the term for the niche occupied by microbes that rely on the metabolic activity of other organisms?

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

    What is the outcome of an endosymbiotic event between archaea and bacteria?

    <p>Formation of a eukaryotic cell</p> Signup and view all the answers

    What is the common ancestor of all life on Earth?

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

    What is the function of a prion?

    <p>To cause disease in animals</p> Signup and view all the answers

    What is the significance of the discovery of ribosomes?

    <p>They are the site of protein synthesis</p> Signup and view all the answers

    What is the reason for the limitation of a light microscope?

    <p>The wavelength of light</p> Signup and view all the answers

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