Plant and Animal Tissues and Microorganism Growth
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Questions and Answers

Which parameter of plant and animal tissues is referred to as intrinsic parameter?

  • Color content
  • Aroma content
  • Nutrient content (correct)
  • Texture content
  • At which pH values do most microorganisms grow best?

  • Above 7.5
  • Below 4.0
  • Around 7.0 (correct)
  • Between 4.0 - 6.5
  • Which microorganisms tend to be more fastidious in their relationships to pH?

  • Spoilage bacteria
  • Pathogenic bacteria (correct)
  • Molds
  • Yeast
  • What is the term used for the oxidation-reduction potential of plant and animal tissues?

    <p>Eh factor</p> Signup and view all the answers

    Which factor should not be taken as precise boundaries for microorganisms' pH minima and maxima?

    <p>Oxidation-reduction potential (Eh)</p> Signup and view all the answers

    What is the term used for the parameters that are inherent part of plant and animal tissues?

    <p>'Intrinsic' parameters</p> Signup and view all the answers

    Which type of acid permits growth at a lower pH value for certain lactobacilli?

    <p>Citric acid</p> Signup and view all the answers

    In the presence of 0.2 M NaCl, which bacterium has been shown to grow over a wider pH range?

    <p>Alcaligenes faecalis</p> Signup and view all the answers

    Which of the following foods falls below the point at which bacteria normally grow, as indicated in Table 3–1?

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

    What is a common observation regarding fruits and spoilage?

    <p>They generally undergo mold and yeast spoilage</p> Signup and view all the answers

    Which acid type does not permit growth at a lower pH value for certain lactobacilli?

    <p>Lactic acid</p> Signup and view all the answers

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