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microbial interaction flashcard

Erfiana Shamsaddin Inglês 18 flashcards

Flashcards do conjunto (18)

  1. 1MICROBIAL INTERACTIONSYMBIOSIS
    association of two or more different species of organisms.
  2. 2Ectosymbiontorganism located on surface of another organism
  3. 3Endosymbiontorganism located within another organism
  4. 4Symbiontphysical contact between dissimilar organisms of similar size
  5. 5Consortiumhosts that have more than one associated symbiont
  6. 6Microorganism-­Insect Mutualism-endosymbiotic microbe provides needed vitamins and amino acids
    -insect host provides secure habitat and nutrients.
  7. 7Protozoan-­Termite Relationship-termite provides food for protozoan
    -protozoan digests cellulose in wood particles, providing nutrients for termite
  8. 8Cooperation-along with commensalism is a positive, but not obligate, form of symbiosis which involves syntrophic relationships
    -benefits both organisms in relationship
  9. 9Syntrophism• type of commensalism
    -growth of one organism depends on growth factors, nutrients, or substrate provided by another organism growing nearby.
  10. 10Commensalism-one organism benefits and the other is neither harmed nor helped
  11. 11Examples of CommensalismMicrobial succession during spoilage of milk
    -fermentative bacteria produce acids that promote growth of acid tolerant species.
  12. 12Predation-among microbes involves a predator species that attacks, usually killing its prey
  13. 13Microbial PredatorsBdellovibrio penetrates cell wall, grows outside plasma membrane.
  14. 14Parasitismone organism gains (parasite) and the other is harmed (host)
  15. 15Genomic Reduction• outcome of long-­term parasitic relationship
    -parasite loses unused genomic information
  16. 16Ammensalismnegatives impact of one organism on another based on release of a specific compound
  17. 17Competitionoccurs when two organisms try to acquire or use the same resource
  18. 18Two Possible Outcomes of Competition• one organism dominates
    – competitive exclusion principal
    • two organisms share the resource
    – both survive at lower population levels

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this flashcard help you to define several terms related to microbial interaction topic.
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