Microbial Life and Taxonomy Quiz

Explore microbial classification, domains, nomenclature & more with 16 questions. Test your microbiology expertise now!

#1

Which of the following is not a domain in the three-domain system of classification?

Bacteria
Archaea
Eukarya
Prokarya
#2

Which of the following is not a characteristic of bacteria?

Presence of a nucleus
Prokaryotic cells
Unicellular organisms
Peptidoglycan cell walls
#3

Which of the following is a characteristic of prokaryotic cells?

Presence of a nucleus
Complex organelles
Linear chromosomes
Circular chromosomes
#4

Which of the following is a characteristic of the domain Eukarya?

Presence of a nucleus
Prokaryotic cells
Unicellular organisms only
Absence of membrane-bound organelles
#5

Which taxonomic rank is higher than class and lower than phylum?

Order
Family
Genus
Species
#6

Which scientist proposed the system of binomial nomenclature?

Carl Linnaeus
Charles Darwin
Gregor Mendel
Louis Pasteur
#7

Which of the following is a defining characteristic of Archaea?

Presence of a nucleus
Prokaryotic cells
Peptidoglycan cell walls
Ability to thrive in extreme environments
#8

Which taxonomic rank is higher than kingdom?

Domain
Phylum
Class
Order
#9

What is the correct format for writing a scientific name in binomial nomenclature?

Genus species
Species Genus
Genus Species
Species, Genus
#10

Which of the following is a eukaryotic microorganism?

Bacteria
Archaea
Fungi
Bacteriophage
#11

What is the correct order of taxonomic categories from broadest to most specific?

Phylum, Kingdom, Class, Order, Family, Genus, Species
Kingdom, Phylum, Class, Order, Family, Genus, Species
Kingdom, Phylum, Order, Class, Family, Genus, Species
Kingdom, Phylum, Class, Order, Genus, Family, Species
#12

Who proposed the three-domain system of classification?

Robert Whittaker
Lynn Margulis
Carl Woese
Thomas Cavalier-Smith
#13

What is the primary criterion used to classify organisms into different species?

Reproductive isolation
Genetic similarity
Physical appearance
Habitat preference
#14

In taxonomy, what does the term 'polyphyletic' refer to?

A group that includes an ancestor and all its descendants
A group that does not include the most recent common ancestor of all members
A group that includes some but not all descendants of a common ancestor
A group that includes only the most recent common ancestor and some of its descendants
#15

Who proposed the five-kingdom system of classification?

Robert Whittaker
Carl Woese
Lynn Margulis
Thomas Cavalier-Smith
#16

In taxonomy, what does the term 'monophyletic' refer to?

A group that includes an ancestor and all its descendants
A group that does not include the most recent common ancestor of all members
A group that includes some but not all descendants of a common ancestor
A group that includes only the most recent common ancestor and some of its descendants

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