Industrial Use of Lactic Acid Bacteria
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Questions and Answers

Which of the following is a key characteristic of the Clostridia group within the Firmicutes?

  • They are used in the production of enzymes and insecticides
  • They are aerobic spore-forming bacteria
  • They are mainly pathogens of humans and animals (correct)
  • They are non-spore forming lactic acid bacteria

    • What are the two major groups that lactic acid bacteria are divided into based on their fermentation products?

  • Gram-positive and Gram-negative groups
  • Aerobic and anaerobic groups
  • Spore-forming and non-spore forming groups
  • Homofermentative and heterofermentative groups (correct)

    • Which of the following genera is NOT part of the lactic acid bacteria group?

  • Enterococcus
  • Leuconostoc
  • Bacillus (correct)
  • Lactobacillus

    • What is the industrially important use of the Bacillus species within the Firmicutes?

    <p>They are used in the production of enzyme and insecticide</p> Signup and view all the answers

    Which of the following is a key characteristic of the Actinobacteria?

    <p>They are Gram-positive bacteria that form branching filaments</p> Signup and view all the answers

    How are lactic acid bacteria used in industry?

    <p>They are used in the production of various fermented foods and beverages</p> Signup and view all the answers

    What is a desirable characteristic of lactic acid bacteria for industrial purposes mentioned in the text?

    <p>High cell mass production</p> Signup and view all the answers

    Which bacterial group is known for its tendency to form filaments or hyphae?

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

    What distinguishes Actinobacteria from other Firmicutes?

    <p>Formation of filaments or hyphae</p> Signup and view all the answers

    Why are Lactic Acid Bacteria considered beneficial for industrial purposes?

    <p>They produce low amounts of byproducts</p> Signup and view all the answers

    Which bacterium is used to monitor the quality of beers like lambic beer and as a starter in yogurt manufacture?

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

    Which of the following is a characteristic of the Proteobacteria group of bacteria?

    <p>They include the industrially important members Acetobacter and Gluconobacter</p> Signup and view all the answers

    What is the primary product produced by the acetic acid bacteria from the incomplete oxidation of alcohol?

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

    Which of the following is a distinguishing characteristic between the acetic acid bacteria Acetobacter and Gluconobacter?

    <p>Acetobacter is polarly flagellated, while Gluconobacter is peritrichously flagellated</p> Signup and view all the answers

    Which taxonomic group of microorganisms, mentioned in the passage, is known for its ability to form spores?

    <p>Spore-forming Firmicutes</p> Signup and view all the answers

    Which taxonomic group of microorganisms, mentioned in the passage, is known for its ability to produce industrially important secondary metabolites?

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

    Which of the following is a characteristic of microorganisms that makes them advantageous for industrial applications compared to plants and animals?

    <p>Microorganisms grow rapidly in comparison with plants and animals</p> Signup and view all the answers

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