Microbial Classification and Identification: Three Domains of Life

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What distinguishes Eukarya from Bacteria and Archaea?

Absence of ribosomal RNA

Single-celled structure

Presence of a nucleoid

Presence of a nucleus (correct)

How do Archaea differ from Bacteria despite their similar appearance?

Presence of a nucleus

Different metabolic processes

Lack of cell walls

Different genes for managing and reading out their DNA (correct)

What classification system was used before the introduction of the three domain system?

Phyla

Kingdoms (correct)

Families

Orders

What is taxonomy primarily concerned with?

Naming, describing, and classifying organisms Signup and view all the answers

Which component of taxonomy involves determining the distinguishing characteristics of taxonomic groups?

Identification Signup and view all the answers

What is the primary basis for plant and animal classification in phenetic classification?

Morphological, physiological, and ecological characteristics Signup and view all the answers

Why is morphology considered somewhat useful for prokaryotes in classification?

It is easy to study and includes characteristics like shape and size Signup and view all the answers

What is a phenotype based on in organisms?

Interaction of genotypes with the environment Signup and view all the answers

What does cladistics focus on in classifying organisms into groups (clades)?

Morphological characteristics reflecting evolutionary relationships Signup and view all the answers

Why is the assessment of genetic exchange not useful for classifying prokaryotes?

Prokaryotes lack sexual reproduction Signup and view all the answers

Microbial Classification and Identification: Three Domains of Life

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Questions and Answers

What distinguishes Eukarya from Bacteria and Archaea?

How do Archaea differ from Bacteria despite their similar appearance?

What classification system was used before the introduction of the three domain system?

What is taxonomy primarily concerned with?

Which component of taxonomy involves determining the distinguishing characteristics of taxonomic groups?

What is the primary basis for plant and animal classification in phenetic classification?

Why is morphology considered somewhat useful for prokaryotes in classification?

What is a phenotype based on in organisms?

What does cladistics focus on in classifying organisms into groups (clades)?

Why is the assessment of genetic exchange not useful for classifying prokaryotes?

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