Sentence examples for facultative from high-quality English sources.

  • Facultative anaerobes are bacteria that can grow in both the presence or absence of oxygen.

  • Some species, called facultative anaerobes, are able to grow either with or without free oxygen.

  • Klebsiella organisms are categorized microbiologically as gram-negative, facultative anaerobic, nonmotile bacteria.

  • Obligate parasites have an absolute requirement for a host, whereas facultative parasites can live and reproduce in the absence of a host.

Use facultative in a sentence.

  • Under the optional (or facultative) referendum, a popular vote on a law passed by the legislature is required whenever petitioned by a specified number of voters.

  • For example, some are aerobes (require oxygen), some are anaerobes (grow only in the absence of oxygen), and some are facultative (they grow in either condition).

  • Staphylococci are microbiologically characterized as gram-positive (in young cultures), non-spore-forming, nonmotile, facultative anaerobes (not requiring oxygen).

  • Vibrios are microbiologically characterized as gram-negative, highly motile, facultative anaerobes (not requiring oxygen), with one to three whiplike flagella at one end.

  • Enterobacter are gram-negative bacteria that are classified as facultative anaerobes, which means that they are able to thrive in both aerobic and anaerobic environments.

  • Parthenogenic species may be obligate (that is, incapable of sexual reproduction) or facultative (that is, capable of switching between parthenogenesis and sexual reproduction depending upon environmental conditions).


    • adj all

      - granting a privilege or permission or power to do or not do something

      Example: a facultative enactment

    • adj pert

      - of or relating to the mental faculties

    • adj all

      - able to exist under more than one set of conditions

      Example: a facultative parasite can exist as a parasite or a saprophyte

    • adj all

      - optional

    Report for:

    Use facultative in a sentence

    On this page, there are 14 sentence examples for facultative. They are all from high-quality sources and constantly processed by lengusa's machine learning routines.

      Sentence frequency composition for this page:
    • 13 sentence examples for facultative from Encyclopedia Britannica
    • 1 sentence examples for facultative from PlosOne Science Journals
      There are 1 relevant lexical connections:
    • • Relevant word or phrase for facultative is elective

    Grid-Flow technology

    Just use the " " button to fragment sentence examples and start your learning flow.

    Example output from one of your searches: