17 Questions
Which of the following is a key characteristic of the Clostridia group within the Firmicutes?
They are mainly pathogens of humans and animals
What are the two major groups that lactic acid bacteria are divided into based on their fermentation products?
Homofermentative and heterofermentative groups
Which of the following genera is NOT part of the lactic acid bacteria group?
Bacillus
What is the industrially important use of the Bacillus species within the Firmicutes?
They are used in the production of enzyme and insecticide
Which of the following is a key characteristic of the Actinobacteria?
They are Gram-positive bacteria that form branching filaments
How are lactic acid bacteria used in industry?
They are used in the production of various fermented foods and beverages
What is a desirable characteristic of lactic acid bacteria for industrial purposes mentioned in the text?
High cell mass production
Which bacterial group is known for its tendency to form filaments or hyphae?
Actinobacteria
What distinguishes Actinobacteria from other Firmicutes?
Formation of filaments or hyphae
Why are Lactic Acid Bacteria considered beneficial for industrial purposes?
They produce low amounts of byproducts
Which bacterium is used to monitor the quality of beers like lambic beer and as a starter in yogurt manufacture?
Enterococcus
Which of the following is a characteristic of the Proteobacteria group of bacteria?
They include the industrially important members Acetobacter and Gluconobacter
What is the primary product produced by the acetic acid bacteria from the incomplete oxidation of alcohol?
Acetic acid
Which of the following is a distinguishing characteristic between the acetic acid bacteria Acetobacter and Gluconobacter?
Acetobacter is polarly flagellated, while Gluconobacter is peritrichously flagellated
Which taxonomic group of microorganisms, mentioned in the passage, is known for its ability to form spores?
Spore-forming Firmicutes
Which taxonomic group of microorganisms, mentioned in the passage, is known for its ability to produce industrially important secondary metabolites?
Actinobacteria
Which of the following is a characteristic of microorganisms that makes them advantageous for industrial applications compared to plants and animals?
Microorganisms grow rapidly in comparison with plants and animals
Explore the desirable characteristics of lactic acid bacteria for industrial purposes, including their fermentation capabilities, minimal nitrogen requirement, high lactic acid yields, and ability to thrive in extreme conditions. Test your knowledge on the industrial applications of lactic acid bacteria.
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