12 Questions
What is the primary function of microorganisms in nature according to the text?
Self-perpetuation
How are microorganisms described in comparison to higher forms?
They are simpler and less capable
What does the microbial spoilage of foods represent according to the text?
A primary role of food biota in nature
Which process involves the operation of the nitrogen cycle and other element cycles according to the text?
Self-perpetuation of microorganisms
What do microorganisms obtain from organic matter for their perpetuation?
Nutrients
What is NOT mentioned as part of the general reaction carried out by heterotrophs and autotrophs?
Vitamins
What are the two main questions one should consider when evaluating the safety of a given food product?
What is the total number of microorganisms present and what types of organisms are represented?
Which of the following methods has likely NOT been used for bacterial taxonomic analysis?
Physical coloration of bacterial cell walls
What components make up the 50S subunit of a prokaryotic ribosome?
23S RNA, 5S RNA, and 34 proteins
Which method has come into wide use only during the 1980s for bacterial taxonomic analysis?
Ribosomal RNA sequence similarity
Why have many new taxa in bacterial classification been created in the past two decades?
As a result of employing molecular genetic methods along with traditional methods
What is the main composition of the 30S subunit of a prokaryotic ribosome?
16S RNA and about 21 proteins
Explore the biological principles of microbial biota associated with plants and animals in their natural habitats and their roles in food sources. Learn about the primary functions of microorganisms in nature and their impact on plants, animals, and humans.
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