Prokaryotic Cell Genetics and Genomes
30 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 meaning of the term 'Microbiology'?

  • The study of human biology
  • The study of tiny life forms that are not easily observed without magnification (correct)
  • The study of plant biology
  • The study of large life forms
  • Which term refers to minute living things that are usually too small to be seen with the naked eye?

  • Mammals
  • Reptiles
  • Microorganisms (correct)
  • Insects
  • What does the abbreviation 'ASF' stand for in the context of microbiology?

  • African Swine Flu
  • American Swine Fever
  • Asian Swine Flu
  • African Swine Fever (correct)
  • Who is credited with proposing the first cell theory in 1663?

    <p>Robert Hooke</p> Signup and view all the answers

    Which scientist is associated with the concept of 'Spontaneous Generation'?

    <p>Anton van Leeuwenhoek</p> Signup and view all the answers

    What is the major component of plant cell walls that ruminants lack enzymes to break down?

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

    What did Carolus Von Linnaeus contribute to microbiology?

    <p>Developing binomial nomenclature for organisms</p> Signup and view all the answers

    What specialized chamber in the digestive tract of ruminants is essential for cellulose digestion?

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

    What is the main role of the dense and diverse community of microorganisms in the rumen of ruminants?

    <p>Digest cellulose</p> Signup and view all the answers

    Why do ruminants rely on symbiotic microorganisms in their rumen for digestion?

    <p>To detoxify plant toxins</p> Signup and view all the answers

    Unlike ruminants, what do humans rely on the gut microbiome for in terms of nutrition?

    <p>Breaking down complex carbohydrates</p> Signup and view all the answers

    Where in the human digestive tract are there approximately 1011 microbial cells per gram of colonic contents?

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

    What percentage of cultivated bacteria belong to one of the four phyla Actinobacteria, Firmicutes, Proteobacteria, and Bacteroidetes?

    <p>90%</p> Signup and view all the answers

    How many described phyla does the domain Archaea consist of?

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

    What type of cell structure do Archaea have?

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

    Where did the first isolates of Archaea come from?

    <p>Hot, salty, or acidic sites</p> Signup and view all the answers

    What are small circles of DNA distinct from the chromosome in prokaryotic cells called?

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

    How many major phylogenetic lineages (phyla) have at least one species that has been grown in culture among the Bacteria?

    <p>30</p> Signup and view all the answers

    What do environmental DNA sequences provide evidence for regarding bacterial phyla?

    <p>Existence of at least 80 bacterial phyla</p> Signup and view all the answers

    How many genes are typically encoded in the genomes of Bacteria and Archaea?

    <p>500 - 10,000</p> Signup and view all the answers

    What is the approximate number of base pairs in the DNA of a human cell?

    <p>3 billion</p> Signup and view all the answers

    Which cellular activity culminates in the division of the cell to form two cells?

    <p>Synthesis of new structures</p> Signup and view all the answers

    What proteins carry out reactions that supply energy and perform biosynthesis within microbial cells?

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

    In what sequential processes are enzymes and other proteins synthesized within a cell?

    <p>Transcription and translation</p> Signup and view all the answers

    What is the full set of genes in a cell called?

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

    In which type of cells is DNA present within a membrane-enclosed nucleus?

    <p>Eukaryotic cells</p> Signup and view all the answers

    What encodes a protein or an RNA molecule?

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

    Which cells have typically closed circular chromosomes?

    <p>Prokaryotic cells</p> Signup and view all the answers

    What is the mass formed by the aggregation of chromosomes within a prokaryotic cell?

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

    How are the genomes of prokaryotic cells and eukaryotic cells organized differently?

    <p>Prokaryotic cells have circular chromosomes, while eukaryotic cells have linear chromosomes.</p> Signup and view all the answers

    More Like This

    Bacterial DNA Organization and Plasmids
    36 questions
    Prokaryotic Cell Components Quiz
    18 questions
    Prokaryotic vs Eukaryotic Cells Quiz
    24 questions
    Prokaryotic Nucleoid and DNA Quiz
    8 questions
    Use Quizgecko on...
    Browser
    Browser