Oral Microorganism Growth Factors Quiz
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Questions and Answers

What is the term for the replacement of some microorganisms by others in response to changes affecting the characteristics of where they live?

  • Allogenic succession (correct)
  • Microbial replacement
  • Microbial succession
  • Autogenic succession

    • During which stage does the acquisition of microorganisms from the mother's vaginal tract occur?

  • During breastfeeding
  • At 6 months
  • After the permanent dentition
  • Before birth (in utero) (correct)

    • At which stage do the microorganisms in the oral microbiota change during the lifetime?

  • Before birth (in utero)
  • At 6 months
  • During breastfeeding
  • After the permanent dentition (correct)

    • What is the term for the replacement in the microbiota by changes in the habitat due to microbial factors?

    <p>Autogenic succession</p> Signup and view all the answers

    Which of the following best describes an ecosystem?

    <p>An interaction of living organisms and non-living components where energy is exchanged</p> Signup and view all the answers

    In the oral cavity, which is considered an ecological niche?

    <p>Buccal mucosa</p> Signup and view all the answers

    What regulates ecosystems in the oral cavity?

    <p>Eruption or extraction of teeth</p> Signup and view all the answers

    How would you describe the variability in the oral cavity ecosystem?

    <p>Qualitative and quantitative differences among different individuals</p> Signup and view all the answers

    What best characterizes the oral cavity ecosystem?

    <p>Open and dynamic</p> Signup and view all the answers

    Which factor contributes to the qualitative and quantitative characteristics of the entire microbiota in the oral cavity?

    <p>Presence of orthodontic appliances</p> Signup and view all the answers

    Which of the following is a source of nutrients for oral bacteria?

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

    What is the role of lipoteichoic acid binding in oral microorganism growth?

    <p>It allows adherence to hard surfaces</p> Signup and view all the answers

    What is the main function of saliva in relation to oral microorganisms?

    <p>pH buffer</p> Signup and view all the answers

    Which of the following is a function of host protective factors in limiting the buildup of microorganisms?

    <p>Mucose integrity</p> Signup and view all the answers

    What is the effect of chewing and swallowing on oral microorganisms?

    <p>Mechanical drag of microorganisms in the digestive tract</p> Signup and view all the answers

    Which component of gingival fluid is released by desquamation of mucosal surfaces, providing nutrients for oral bacteria?

    <p>Glycoproteins and lipoproteins</p> Signup and view all the answers

    What is the primary role of conjunctival and epithelial cells in relation to oral microorganisms?

    <p>Provide nutrients for bacteria</p> Signup and view all the answers

    What is the primary role of interbacterial sources in supporting the growth of oral microorganisms?

    <p>Produces short chain fatty acids used by treponemes</p> Signup and view all the answers

    How do exogenous sources (diet) primarily contribute to the growth of oral microorganisms?

    <p>Aid digestion through bacterial enzymes</p> Signup and view all the answers

    What is the function of antagonistic factors between bacteria in limiting the growth of certain microorganisms or pathogens?

    <p>Competition for nutrients</p> Signup and view all the answers

    What is the main benefit of the oral microbiota?

    <p>Avoid unusual growth of microorganisms or pathogens</p> Signup and view all the answers

    What is the role of Gram-negative bacilli in the composition of oral microbiota?

    <p>Aid digestion through bacterial enzymes</p> Signup and view all the answers

    What is the main function of the acellular amorphous layer formed by selective adsorption of salivary components on tooth surfaces?

    <p>Preventing the penetration of acids and the removal of minerals from the tooth enamel surface into the medium</p> Signup and view all the answers

    What is the virtual space formed by the inner part of the marginal gingiva and the tooth surface called?

    <p>Gingival sulcus</p> Signup and view all the answers

    What is the main function of saliva in the oral cavity?

    <p>Softening and lubricating food for easier swallowing</p> Signup and view all the answers

    At what pH do sugar-rich foods typically result in?

    <p>Low pH</p> Signup and view all the answers

    What allows colonization of bacteria that are not capable of adhesion?

    <p>Co-aggregation</p> Signup and view all the answers

    What is a protective characteristic of the acquired salivary pellicle?

    <p>Opposing tooth decalcification</p> Signup and view all the answers

    Which factor affects the oral environment by creating a reducing atmosphere allowing anaerobes to develop?

    <p>Oxygen-consuming bacteria</p> Signup and view all the answers

    What is a specific feature of Streptococcus mutans in relation to adherence to hard surfaces?

    <p>Glucans mediated binding</p> Signup and view all the answers

    What factor varies greatly depending on sugar-rich or protein-rich foods?

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

    What is the main effect of saliva in relation to food in the oral cavity ?

    <p>Lubricates food for easier swallowing</p> Signup and view all the answers

    What is one physiological change experienced by an individual at puberty that can affect the oral environment?

    <p>Hormonal changes</p> Signup and view all the answers

    What is a specific feature of saliva that affects the oral environment?

    <p>Bicarbonate buffer</p> Signup and view all the answers

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