Question 1

Classification is necessary to ______.
A)establish criteria for identifying organisms
B)arrange related organisms into groups
C)provide information on how organisms evolved
D)all of these

Accepted Answer

Classification is necessary for all three reasons listed, as it helps establish criteria for identifying organisms, arrange related organisms into groups, and provide information on how organisms evolved.

Question 2

Organisms are generally classified according to _____.
A)cell size
B)evolutionary relationships
C)colony color
D)None of these choices

Accepted Answer

Organisms are generally classified according to their evolutionary relationships, which involves examining their genetic and morphological similarities and differences. This system of classification is called taxonomy and it aims to group organisms into categories based on their evolutionary history and relationships. Cell size and colony color are not reliable indicators of evolutionary relationships and therefore cannot be used for classification purposes.

Question 3

Which of the following organisms shows the proper use of binomial nomenclature
A)escherichia coli
B)Escherichia Coli
C)Escherichia coli
D)escherichia Coli

Accepted Answer

According to the rules of binomial nomenclature, the genus name (Escherichia) should be capitalized and the species name (coli) should be lowercase. Therefore, option C (Escherichia coli) shows the proper use of binomial nomenclature.

Question 4

Which one of the following is a prokaryote without a cell wall
A)Virus
B)Cyanobacterium
C)Mycoplasma
D)Rickettsia

Accepted Answer

Mycoplasma is a prokaryote that lacks a cell wall, making it unique among prokaryotic organisms. It is known as a "wall-less" bacterium and is able to survive without a rigid cell wall due to its specialized cell membrane. Viruses are not considered living organisms and do not have cells. Cyanobacteria and Rickettsia are both prokaryotes, but they have cell walls.

Question 5

A tool used by biologist that involves asking a series of "either-or" questions which eventually leads to the identification of an organism is a/an _____.
A)species key
B)evolutionary tree
C)dichotomous key
D)binary chart

Accepted Answer

A dichotomous key is a tool used by biologists to identify organisms by asking a series of "either-or" questions, which lead to the identification of the organism. The key contains a set of paired questions with two possible answers, following a path until the organism is identified. The other choices in the options are not the tools used primarily for scientific identification.

Question 6

The five kingdom system of classification was developed by _____.
A)Charles Darwin
B)Robert Hooke
C)Louis Pasteur
D)Robert Whittaker

Accepted Answer

The five kingdom system of classification was developed by Robert Whittaker in 1969.

Question 7

Which one of the following microorganisms was once called blue-green algae
A)Mycoplasmas
B)Cyanobacteria
C)Chlamydiae
D)Rickettsia

Accepted Answer

Cyanobacteria were once called blue-green algae due to their appearance and ability to perform photosynthesis like algae. However, they are actually bacteria and not true algae. Mycoplasmas, Chlamydiae, and Rickettsia are all types of bacteria, but they have never been called blue-green algae.

Question 8

Which of the following levels of classification would contain the greatest of organisms
A)Phylum
B)Order
C)Genus
D)Class

Accepted Answer

Phylum is a broad level of classification that groups organisms based on their fundamental body plan. It contains a higher number of organisms than any other level of classification, making it the best choice for this question. Orders, Genera, and Classes are all more specific levels of classification that contain fewer organisms.

Question 9

The binomial name of a microbe is composed of its _____.
A)kingdom and genus names
B)genus name and a species modifier
C)family and class names
D)genus and family names

Accepted Answer

The binomial naming system for microbes consists of the genus name and a species modifier. This allows for precise and specific identification of individual species within a genus.

Question 10

Which of the following is a reason that bacteria cannot be classified in the same way as animals
A)Some bacteria are not motile.
B)Bacteria do not reproduce sexually.
C)Bacteria are single celled organisms.
D)Bacteria are prokaryotic organisms.

Accepted Answer

The answer of Which of the following is a reason...

Question 11

The science of classification is generally known as _____.
A)nomenclature
B)taxonomy
C)morphology
D)dichotomy

Accepted Answer

The science of classification is known as taxonomy.

Question 12

A bacterial strain contains _____.
A)several species
B)several families
C)a subgroup of a species with some of the same characteristics
D)a subgroup of a genus which have permanent genetic differences

Accepted Answer

A bacterial strain refers to a subgroup of a species with some of the same characteristics, such as morphology, physiology, and biochemistry. It is a genetically homogeneous population of cells that are descendants of a single, pure microbial culture.

Question 13

A strain is a subgroup of a _____.
A)phylum
B)class
C)family
D)species

Accepted Answer

A strain is a subgroup of a species, typically defined by specific genetic or phenotypic characteristics.

Question 14

Binomial nomenclature was originated by ______.
A)Louis Pasteur
B)Robert Koch
C)Hans Delbruck
D)Carolus Linnaeus

Accepted Answer

Carolus Linnaeus originated binomial nomenclature, which is a two-part naming system used to name organisms. It involves naming an organism with a genus name and a species name. This system is still widely used in the field of biology today.

Question 15

In the name Escherichia coli,Escherichia refers to the ________ of the bacteria.
A)class
B)phylum
C)species
D)genus

Accepted Answer

In the name Escherichia coli, "Escherichia" refers to the genus of the bacteria. The genus name always comes before the species name, and together they make up the scientific name of the organism.

Question 16

All of the following are considered eukaryotes except:
A)Archea
B)Fungi
C)Protozoa
D)Humans

Accepted Answer

Eukaryotes are organisms with cells that have a nucleus and other membrane-bound organelles. Archea, on the other hand, are prokaryotes that lack a nucleus and organelles. Therefore, Archea are not considered eukaryotes.

Question 17

Organisms in the same ________ are more closely related than are organisms in the same ________.
A)phylum,genus
B)class,order
C)family,phylum
D)phylum,order

Accepted Answer

Organisms in the same family share a more recent common ancestor than those in the same phylum, indicating a closer evolutionary relationship. The hierarchy of biological classification from broad to specific is: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.

Question 18

The correct order of taxonomic hierarchies (from most broad to most specific)is _____.
A)class,order,family,phylum
B)order,family,class,phylum
C)phylum,class,order,family
D)phylum,class,family,order

Accepted Answer

The correct order of taxonomic hierarchies from most broad to most specific is kingdom, phylum, class, order, family, genus, species (remembered by the mnemonic "King Philip Came Over For Good Soup"). Option C has the correct order of phylum, class, order, family, making it the best choice.

Question 19

Which one of the following microorganisms has its own kingdom in the five-kingdom of classification
A)Viruses
B)Algae
C)Bacteria
D)Fungi

Accepted Answer

Fungi are classified into their own kingdom in the five-kingdom system of classification because they are distinct from plants, animals, bacteria, and protists, having unique characteristics such as their cell walls made of chitin and their mode of nutrition (absorptive heterotrophy).

Question 20

Which of the following questions would not be a good choice for a dichotomous key
A)Are the cells rod shaped
B)Are the cells Gram negative
C)Do the cells ferment glucose
D)Where is the cell usually found

Accepted Answer

Dichotomous keys rely on questions with only two possible answers. "Where is the cell usually found" does not have a clear yes or no answer and therefore would not be a good choice for a dichotomous key.

The best choice for a dichotomous key would be A, B, or C as they have two possible answers: yes or no.

Quiz 10: An Introduction to Taxonomy: The Bacteria

Classification is necessary to ______.

Organisms are generally classified according to _____.

Which of the following organisms shows the proper use of binomial nomenclature

Which one of the following is a prokaryote without a cell wall

A tool used by biologist that involves asking a series of "either-or" questions which eventually leads to the identification of an organism is a/an _____.

The five kingdom system of classification was developed by _____.

Which one of the following microorganisms was once called blue-green algae

Which of the following levels of classification would contain the greatest of organisms

The binomial name of a microbe is composed of its _____.

Which of the following is a reason that bacteria cannot be classified in the same way as animals

The science of classification is generally known as _____.

A bacterial strain contains _____.

A strain is a subgroup of a _____.

Binomial nomenclature was originated by ______.

In the name Escherichia coli,Escherichia refers to the ________ of the bacteria.

All of the following are considered eukaryotes except:

Organisms in the same are more closely related than are organisms in the same .

The correct order of taxonomic hierarchies (from most broad to most specific) is _____.

Which one of the following microorganisms has its own kingdom in the five-kingdom of classification

Which of the following questions would not be a good choice for a dichotomous key