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Mastering Koch's Postulates

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Questions and Answers

Which of the following is one of Koch's Postulates?

A molecular organism is not necessary for the development of disease
A molecular organism can only be found in healthy people
A molecular organism must be present in every case of disease except in healthy people (correct)
A molecular organism must be present in every case of disease including healthy people

What is the purpose of Koch's Molecular Postulates?

To determine if a trait is unrelated to pathogenicity
To determine if a trait is associated with pathogenic strains (correct)
To determine if a trait is associated with both pathogenic and nonpathogenic strains
To determine if a trait is associated with nonpathogenic strains

What is the purpose of using molecular and genetic evidence in Koch's Postulates?

To determine if a trait is unrelated to pathogenicity
To overcome the inability to grow certain organisms in pure culture (correct)
To determine if a trait is associated with nonpathogenic strains
To determine if a trait is associated with pathogenic strains

What is the purpose of natural classification?

To arrange organisms into groups based on shared characteristics (A) Signup and view all the answers

How many domains of life are recognized in the three domains of life classification?

Three (A) Signup and view all the answers

Which of the following is NOT one of Koch's Postulates?

The molecular organism must be isolated and grown in pure culture (A) Signup and view all the answers

Which of the following is a solution to the exception of some organisms not being able to be grown in pure culture?

Using molecular and genetic evidence (B) Signup and view all the answers

What is the purpose of inactivating a gene in Koch's Molecular Postulates?

To decrease pathogenicity (C) Signup and view all the answers

What is the purpose of comparing genetic material in phylogeny?

To classify organisms into natural groups (A) Signup and view all the answers

According to the traditional view, what type of classification is the VGT (Vibrio, Green Sulfur Bacteria, and Thermotoga)?

Monophyletic (D) Signup and view all the answers