Marine Microbes and Ocean Carbon Control 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 is the purpose of comparing gene/genome sequences in bacteria?

  • To determine bacterial cell shapes
  • To study bacterial metabolism
  • To investigate antibiotic resistance
  • To identify new species (correct)
  • In the Gram stain method, what color do Gram-positive bacteria retain?

  • Red
  • Green
  • Violet (correct)
  • Blue
  • What characteristic distinguishes Gram-negative bacteria from Gram-positive bacteria?

  • Presence of nanotubes
  • Cell size
  • Structure of the cell wall (correct)
  • Type of gene sequences
  • What is the general size range of small bacterial cells like Mycoplasma genitalium?

    <p>$200-300$ nm</p> Signup and view all the answers

    Which bacterial species is known for being an oligotroph with low nutrient requirements?

    <p>Thiomargarita namibiensis</p> Signup and view all the answers

    What method can be used to characterize microbial communities by sequencing DNA from samples?

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

    Which microbial group is known for fixing nitrogen in the oceans?

    <p>Nitrogen-fixing bacteria</p> Signup and view all the answers

    What specialized compartments serve as homes for nitrogen-fixing bacteria in plants?

    <p>Root nodules</p> Signup and view all the answers

    Which bacterial group is known for its ability to naturally clean oil spills in oceans?

    <p>Oil-degrading bacteria</p> Signup and view all the answers

    What do some plastic polymers resemble, leading to the action of plastic-degrading bacteria on them?

    <p>Plant molecules</p> Signup and view all the answers

    Where does the Centre for Enzyme Innovation focus its efforts on optimizing and engineering bacterial enzymes?

    <p>Recycling plastics</p> Signup and view all the answers

    Which microbial organisms are known to thrive in various environments, including marine systems?

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

    What is the main difference between Gram-positive and Gram-negative bacteria?

    <p>Gram-positive bacteria have a thick layer of peptidoglycan, while Gram-negative bacteria have a thin layer of peptidoglycan.</p> Signup and view all the answers

    Which bacterial shape is commonly associated with Escherichia coli?

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

    Why do Gram-negative bacteria appear pink to red in a Gram stain procedure?

    <p>They pick up the counterstain.</p> Signup and view all the answers

    What is a key function of marine environment bacteria?

    <p>Contributing to the nitrogen cycle by fixing gaseous N2.</p> Signup and view all the answers

    Why are microbes important for recycling carbon in the environment?

    <p>They 'eat' organic molecules and release CO2.</p> Signup and view all the answers

    In bacterial phylogenetics, what does gene sequencing help with?

    <p>Exploring the genetic diversity and evolutionary relationships among bacteria.</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser