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Microbial Identification: Bacterial Identification and Phylogeny Classification

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Microbial Identification: Bacterial Identification and Phylogeny Classification

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Questions and Answers

What is the purpose of the binomial system used in biology?

To provide a unique name for each species of microorganism

To organize microorganisms based on their evolutionary relationships

To regulate the naming of microorganisms

To classify microorganisms into a coherent and understandable system (correct)

What is the difference between a species and a genus in the context of prokaryotes?

Species are classified based on a 70% similarity threshold, while genera are classified based on a lower similarity threshold (correct)

Species are classified based on their ability to interbreed, while genera are classified based on major shared properties

Species are the highest level of classification, while genera are a lower level of classification

Species are classified based on their evolutionary relationships, while genera are classified based on their morphological characteristics

Why is it important to follow the International Code of Nomenclature of Bacteria when naming microorganisms?

To regulate the naming of microorganisms and ensure they are included in Bergey's Manual

To avoid losing marks on assignments and exams

To ensure that microorganisms are named consistently and accurately (correct)

To ensure that microorganisms are classified based on their evolutionary relationships

What is the purpose of Bergey's Manual of Systematic Bacteriology?

To provide a comprehensive list of all validated taxa of bacteria Signup and view all the answers

What is the key difference between the species concept for animals/plants and the species concept for prokaryotes?

Animals and plants are classified based on their ability to interbreed, while prokaryotes are classified based on a collection of similar strains that differ from other groups Signup and view all the answers

Why is it important to correctly identify and classify microorganisms?

To bring order and organization to the study of microorganisms, making them more understandable and useful Signup and view all the answers

What is the primary purpose of a Gram stain when identifying bacteria?

To classify the bacteria as Gram-positive or Gram-negative Signup and view all the answers

What is the main difference between taxonomy and phylogeny in the context of microbial classification?

All of the above Signup and view all the answers

Which of the following is a mechanism of horizontal gene transfer in bacteria?

Conjugation Signup and view all the answers

What is the primary purpose of isolating bacteria in a pure culture?

To identify the specific species of bacteria Signup and view all the answers

Which of the following is NOT a factor used in phenotypic tests for bacterial identification?

Bacterial genome sequence Signup and view all the answers

Which of the following is a key difference between artificial and natural (phylogenetic) classification systems for bacteria?

Artificial systems are based on expressed characteristics, while natural systems are based on evolutionary relationships. Signup and view all the answers