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Introduction to Prokaryotes quiz #2

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  • Which organisms are prokaryotes? Archaea, fungi, protists, or plants?
    Archaea are prokaryotes.
  • Which organisms are prokaryotes?
    Prokaryotes include bacteria and archaea.
  • In which kingdom do all organisms have cells that lack a cell wall? Fungi, plants, animals, or bacteria?
    Animals have cells that lack a cell wall.
  • Which domain(s) includes unicellular organisms?
    All domains (Bacteria, Archaea, and Eukarya) include unicellular organisms.
  • Which domains contain prokaryotes?
    The domains Bacteria and Archaea contain prokaryotes.
  • What cellular components can be found in bacteria?
    Bacteria have circular DNA, ribosomes, and a cell membrane.
  • In prokaryotes, what is the shape of their DNA?
    Prokaryotic DNA is circular.
  • Identify the two main domains that contain prokaryotes.
    The two main domains that contain prokaryotes are Bacteria and Archaea.
  • Prokaryotes are classified as belonging to two different domains. What are the domains?
    Prokaryotes belong to the domains Bacteria and Archaea.
  • Which organisms are prokaryotes? Archaea, fungi, protists, or plants?
    Archaea are prokaryotes.
  • Which of the three domains contain(s) prokaryotic organisms?
    The domains Bacteria and Archaea contain prokaryotic organisms.
  • In what ways are archaea similar to bacteria?
    Archaea and bacteria both lack a nucleus and membrane-bound organelles, and have circular DNA.
  • How are archaea most similar to bacteria?
    Archaea are similar to bacteria in that both are prokaryotic and lack a nucleus.
  • What are examples of biofilms?
    Biofilms are communities of microorganisms that adhere to surfaces, such as dental plaque.
  • What characteristics do all members of the domain Bacteria share?
    All bacteria lack a nucleus and have circular DNA.
  • Which prokaryotes are multicellular?
    Prokaryotes are generally unicellular; there are no multicellular prokaryotes.
  • What term refers to a prokaryotic cell that is comma-shaped?
    Vibrio refers to a comma-shaped prokaryotic cell.
  • Which type of microbe does not appear on the tree of life?
    Viruses do not appear on the tree of life as they are not considered living organisms.
  • Which domains of life are classified as prokaryotes?
    The domains Bacteria and Archaea are classified as prokaryotes.
  • How do spirochetes and spirilla differ?
    Spirochetes are flexible spiral-shaped bacteria, while spirilla are rigid spiral-shaped bacteria.
  • What are the only prokaryotes?
    The only prokaryotes are bacteria and archaea.
  • What characterizes the domain Bacteria?
    The domain Bacteria is characterized by organisms that lack a nucleus and have peptidoglycan in their cell walls.
  • What is the definition of generation time in a bacterium?
    Generation time is the time it takes for a bacterial population to double.
  • Which organisms are prokaryotes?
    Bacteria and archaea are prokaryotes.
  • What is true about cyanobacteria?
    Cyanobacteria are photosynthetic bacteria that produce oxygen.
  • What is one way that organisms in the domain Bacteria differ from organisms in the domain Archaea?
    Bacteria have peptidoglycan in their cell walls, while archaea do not.
  • What is the function of a bacterial endospore?
    A bacterial endospore allows the bacterium to survive harsh conditions.
  • What are the prokaryotic domains?
    Bacteria and Archaea are prokaryotic domains.
  • Into which domains can a prokaryotic single-celled organism be classified?
    A prokaryotic single-celled organism could be classified into the domains Bacteria or Archaea.
  • Give an example of a unicellular organism.
    Bacteria are examples of unicellular organisms.
  • Which type of organism would not be included in the domain Eukarya?
    Prokaryotic organisms, such as bacteria and archaea, are not included in the domain Eukarya.
  • Which are prokaryotic organisms that belong to domain Bacteria?
    E. coli and Streptococcus are examples of prokaryotic organisms in the domain Bacteria.
  • What does the term microbiota refer to?
    Microbiota refers to the community of microorganisms living in a particular environment, such as the human gut.
  • Which group of prokaryotes live in extreme environments and are sometimes called extremophiles?
    Archaea are prokaryotes that live in extreme environments and are called extremophiles.
  • Which domains of life contain prokaryotes?
    The domains Bacteria and Archaea contain prokaryotes.
  • What is correct about the genomes of prokaryotes?
    Prokaryotic genomes are typically circular and found in the nucleoid region.
  • What are true characteristics of prokaryotes?
    Prokaryotes lack a nucleus and membrane-bound organelles.
  • Which of the domains of life are all unicellular and prokaryotic?
    The domains Bacteria and Archaea are all unicellular and prokaryotic.