Micro chapter 9 Quiz

A prokaryotic cell would have been assigned to which of the taxonomic Kingdoms? A)Monera B)Animalia C)Fungi D)Protista

A

According to the three-domain classification system an organism with a cell wall made of peptidoglycan would belong to the _____. A)bacteria B)archaea C)eukarya D)none of these

A

According to the three-domain classification system an organism with cells measuring more than 10 micrometers across would most likely belong to the ______. A)eukarya B)bacteria C)archaea D)eukarya, bacteria and archaea would be equally likely

A

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

A

Before bacteria received a kingdom of their own they were generally classified along with: A)protists B)animals C)fungi D)viruses

A

Fossil studies indicate that life on earth first arose about 4 billion years ago. How many billion years ago did multicellular living organisms appear in the fossil record? A)1 B)2 C)3 D)4

A

In phage typing, bacteria that are lysed by the same type of bacteriophage are thought to be: A)more closely related to one another B)less closely related to one another C)more closely related to the bacteriophage D)less closely related to the bacteriophage

A

In the five-kingdom system of classification, _____. A)viruses cannot be classified B)all prokaryotic organisms are found in the kingdom eubacteria C)all organisms that can photosynthesize are found in the plant kingdom D)a domain is a division of a kingdom

A

Organisms that degrade organic molecules to methane belong to the domain _____. A)Archaea B)Eukarya C)Bacteria D)Monera

A

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

A

A eukaryotic, multicellular organism that has no cell wall would be classified as a/an: A)moneran B)animal C)fungus D)protist

B

According to the three-domain classification system, modern plants and animals belong to which Domain? A)bacteria B)eukarya C)archaea D)none of these

B

All members of the historic Kingdom Monera are: A)cyanobacteria B)prokaryotes C)fungi D)protists

B

Genetic homology determines evolutionary relationships among organisms based on: A)the similarity of antibody reactions between species B)the similarity of DNA between species C)morphological similarities between species D)the number of traits shared by two organisms

B

In DNA hybridization experiments, DNA from two closely related organisms will show _____. A)very little annealing B)a high percentage of annealing C)100% annealing D)it is impossible to tell

B

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

B

Polyacrylamide gel electrophoresis is used to separate _____. A)DNA by GC content B)proteins by size C)DNA by nucleotide sequence D)proteins by amino acid sequence

B

The 16S ribosomal subunit is used to study evolutionary relatedness because _____. A)it is the easiest type of RNA to sequence B)ribosomes have evolved very slowly due to their essential roles in cells C)ribosomes evolve very quickly so differences are easy to spot D)none of these

B

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

B

The historic two-kingdom system of classification divided all organisms into either ________ or ________ . A)animals, bacteria B)plants, animals C)eukaryotic, prokaryotic D)motile, nonmotile

B

The organisms represented in this illustration are members of the Kingdom _____. A)Protista B)Monera C)Plantae D)Fungi

B

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

B

Viruses are not assigned to any Kingdom because _____. A)there are too few viruses to bother B)viruses are not cellular life forms C)virology is not a recognized branch of microbiology D)viruses are grouped with the bacteria E)none of these

B

Which of the following criteria is not commonly used to classify Bacteria? A)Morphology B)Shape of ribosomes C)Staining characteristics D)Biochemical characteristics

B

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.

B

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

B

Within the Kingdom Monera, the group of most interest to medical microbiologists is the: A)cyanobacteria B)eubacteria C)archaeobacteria D)prokaryotic bacteria

B

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

C

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

C

A useful technique for comparing different bacterial species based on if they are susceptible to infection by the same virus is called _____. A)protein profile B)virus profile C)phage typing D)serology

C

Fungi can be differentiated from plants by the fact that _____. A)fungi are all unicellular, plants are all multicellular B)fungi do not have a cell wall, plants have a cell wall C)fungi cannot photosynthesize, plants can photosynthesize D)fungi are prokaryotic, plants are eukaryotic

C

If an organism contains 13% adenine in its DNA, its GC content is _____. A)13% B)26% C)74% D)37%

C

In a bacterial species with multiple chromosomes, _____. A)having one or two chromosomes has no evolutionary impact B)it is very simple to distinguish between a chromosome and plasmid purely based on size C)scientists postulate the use of a microfilament structure to ensure partition of both chromosomes to each daughter cell D)duplicate genes that differ by mutations classify the organism as diploid

C

In the three-domain classification system _____. A)all prokaryotes are grouped into the same domain B)eukaryotes are found in two of the domains C)archea may be more closely related eukaryotes than to bacteria D)two of these

C

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

C

Rickettsiae and Chlamydiae are unusual in that they _____. A)are sometimes gram negative and sometimes gram positive B)have no cell walls C)must live inside other living cells D)are extremely large

C

The Kingdom Monera was also known as the Kingdom _____. A)Bacteria B)Eubacteria C)Prokaryotae D)Archaeobacteria

C

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

C

The three-domain system of classification does not include the _____. A)archaea B)eukarya C)monera D)bacteria

C

Which Kingdom includes all animals derived from zygotes? A)Fungi B)Plantae C)Animalia D)Protista

C

Which of the following characteristics is not found in all cellular life forms? A)Cells that are bounded by a membrane B)Genetic information carried in the form of DNA C)Ability to convert light energy to chemical energy D)Ribosomes that produce proteins

C

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

C

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

C

A eukaryotic, unicellular organism with no cell wall would be classified as _____. A)Monera B)Animal C)Fungi D)Protista

D

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

D

Bacteria found in extreme environments (e.g., high heat, very high salt concentration) would best be described as a member of the _____. A)eubacteria B)prokaryotae C)cyanobacteria D)archaeobacteria

D

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

D

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

D

In the five-kingdom scheme of classification, algae are classified along in the Kingdom: A)Monera B)Protista C)Plant D)Protista and Plant

D

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

D

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

D

Use the following dichotomous key to determine the identity of an organism with the following characteristics: not Gram (+), not Gram (-), not rod-shaped, not spherical-shaped, and it is comma-shaped. A)Spirochetes B)Vibrioids C)Corynebacteria D)Mycoplasma

D

Which groups of animals are not usually of concern to the microbiologist? A)ticks B)tapeworms C)fleas D)moths

D

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?

D

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

D

How do lateral gene transfer and symbiosis complicate both the three-domain or five-kingdom treelike structure? Where do viruses, viroids and prions fit in today's taxonomy? Are they classified based on phylogeny or morphology?

Essay answer

To classify new microbes, modern genetic techniques are employed. Why would the evolutionarily relatedness of genes (genetic homology) be more useful than morphology? How are ribosomal RNAs used to study evolutionary relationships among organisms?

Essay answer

What is a species? How are species determined for bacteria and plants/animalsIs the notion of a species still relevant when morphology, ecology/environmental pressures and phylogeny may present such differing ways in which to organize organisms and their relatedness.

Essay answer