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Microorganisms and Food Sources

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Questions and Answers

What is the primary function of microorganisms in nature according to the text?

Ruining food sources

Self-perpetuation (correct)

Destroying plants and animals

Providing energy to inorganic compounds

How are microorganisms described in comparison to higher forms?

They are teleological in nature

They are incapable of complex chemical reactions

They are simpler and less capable (correct)

They are not capable of obtaining nutrients from organic matter

What does the microbial spoilage of foods represent according to the text?

An attempt to improve food quality

An unintended consequence of microorganisms' actions

A way to increase the nutritional value of foods

A primary role of food biota in nature (correct)

Which process involves the operation of the nitrogen cycle and other element cycles according to the text?

Self-perpetuation of microorganisms (D) Signup and view all the answers

What do microorganisms obtain from organic matter for their perpetuation?

Nutrients (C) Signup and view all the answers

What is NOT mentioned as part of the general reaction carried out by heterotrophs and autotrophs?

Vitamins (B) Signup and view all the answers

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? (A) Signup and view all the answers

Which of the following methods has likely NOT been used for bacterial taxonomic analysis?

Physical coloration of bacterial cell walls (B) Signup and view all the answers

What components make up the 50S subunit of a prokaryotic ribosome?

23S RNA, 5S RNA, and 34 proteins (B) Signup and view all the answers

Which method has come into wide use only during the 1980s for bacterial taxonomic analysis?

Ribosomal RNA sequence similarity (C) Signup and view all the answers

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 (C) Signup and view all the answers

What is the main composition of the 30S subunit of a prokaryotic ribosome?

16S RNA and about 21 proteins (A) Signup and view all the answers