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Microbiology, Fifth Edition
Microbiology, 5/e
Lansing M Prescott, Augustana College
Donald A Klein, Colorado State University
John P Harley, Eastern Kentucky University

Microbial Taxonomy

Multiple Choice Quiz

Choose the best answer



1

Microorganisms belonging to the same __________ would be expected to have the most characteristics in common with each other.
A)order
B)species
C)family
D)kingdom
E)genus
2

The Cavalier-Smith's eight kingdom system of classification includes all of the following except:
A)fungi
B)bacteria
C)viruses
D)algae
E)slime molds
3

To which kingdom do the cyanobacteria belong?
A)Fungi
B)Eubacteria
C)Protista
D)Plantae
E)Animalia
4

A unicellular heterotroph with a nucleus but possess 70S ribosomes and lack golgi apparatuses should be placed in which kingdom
A)Fungi
B)Eubacteria
C)Archezoa
D)Chromista
E)Animalia
5

Which is NOT true of the name Escherichia coli
A)Escherichia is the genus to which it belongs
B)coli is the strain to which it belongs
C)it is a scientific name
D)more characteristics have to be met to belong to the coli taxon compared to Escherichia taxon.
E)the name is based on binomial nomenclature
6

Which kingdom would an organism with the following characteristics most likely belong: true nucleus, non-photosynthetic, non-motile, absorb nutrients, and reproduce by forming spores?
A)Fungi
B)Eubacteria
C)Protista
D)Plantae
E)Animalia
7

What is being compared during DNA hybridization studies of two bacteria?
A)rate of DNA replication
B)mechanism of RNA synthesis from DNA
C)ratio of nitrogenous base to all other bases
D)similarity of base sequences
E)nature of the 16S RNA component
8

Which pair of microorganisms would you expect to be most closely related?
A)yeasts and actinomycetes
B)Staphylococcus and Escherichia
C)Streptococcus pyogenes and type a and Streptococcus pyogenes type b
D)Enterobacter aerogenes and Enterobacter cloacae
E)Micrococcus and Staphylococcus
9

What was one of the first and most useful microscopic tests for classifying bacteria that is still important today?
A)Gram stain
B)flagella stains
C)simple stain
D)negative stain for capsule
E)metachromatic granule stain
10

Organism A has 65 percent G+C and organism B has 35 percent G+C. Which of the following can be concluded from these data?
A)The two organisms are related.
B)The two organisms are unrelated.
C)The organisms make entirely different enzymes.
D)Their nucleic acids will not hybridize.
E)Nothing can be concluded from G+C information.
11

Bacterial strains A and B both have % GC of 51. This would indicate that they
A)are closely related.
B)are the same species.
C)have the same habitat.
D)might be closely related.
E)would undergo genetic recombination.
12

Staphylococcus and Streptococcus are not in the same family. This indicates that which of the following is not sufficient to assign an organism to a taxon?
A)Biochemical characteristics
B)Amino acid sequencing
C)Phage typing
D)Serology
E)Morphological characteristics
13

Amino acid sequencing infers information about
A)morphology.
B)identification of an organism.
C)nucleotide bases making up a gene.
D)antigenic composition.
E)enzymatic activities.
14

Biochemical tests are used to determine
A)enzymatic activities.
B)nucleic acid base composition.
C)amino acid sequences.
D)staining characteristics.
E)All of the above.
15

Which kingdom would an organism with the following characteristics most likely belong: true nucleus, multicellular, photosynthetic, chloroplasts within cytoplasmic matrix?
A)Chromista
B)Eubacteria
C)Protozoa
D)Plantae
E)Animalia
16

Which of the following is the arrangement of organisms into groups or taxa?
A)nomenclature
B)identification
C)systematics
D)classification
E)phylogeny
17

Extensive sequential nucleotide analysis and analysis of rRNA has divided the living world into three domains called
A)bacteria, archaea and eucarya.
B)procarya, eucarya and animals.
C)fungi, plants and animals.
D)archaea, eucarya and viruses.
E)bacteria, archaea and cyanobacteria.
18

A(n) _____ classification system arranges organisms into groups whose members share many characteristics and reflects as much as possible the biological nature of organisms.
A)artificial
B)natural
C)phylogenetic
D)molecular
E)phrenetic

Compare the following entities (I and II). Characterize them according to the following key:



19

I. The similarity between a pair of species that has a simple matching coefficient of 0.9.

II. The similarity between a pair of species that has a simple matching coefficient of 0.6.

A)I is greater than II.
B)I is less than II.
C)I is exactly or approximately equal to II.
D)I may stand in more than one of the above relations to II.
20

I. Degree of similarity of base sequences between species A and B when A has a G+C content of 44.

II. Degree of similarity of base sequences between species B and A when B has a G+C content of 44.

A)I is greater than II.
B)I is less than II.
C)I is exactly or approximately equal to II.
D)I may stand in more than one of the above relations to II.
21

A _____ is a diagram usually placed on its side with the X-axis graduated in units of similarity.
A)similarity matrix
B)simple matching coefficient
C)dendrogram
D)profile number
E)Harvard matrix transformation
22

All of the following are examples of morphological features used for classification and identification of procaryotes except
A)staining behavior.
B)colonial shape and color.
C)endospore morphology and location.
D)cell shape.
E)fermentation products.
23

All of the following are examples of physiological and metabolic characteristics used for classification and identification of procaryotes except
A)oxygen relationships.
B)staining behavior.
C)luminescence.
D)cell wall constituents.
E)fermentation products.
24

If the figures below represent the hybridization that occurs between two strands of DNA from different organisms, which result shows the greatest degree of similarity between organisms?<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg:: ::/sites/dl/free/0072320419/20554/ch19_num24_quizimage.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (14.0K)</a>
A)See above image.
B)See above image.
C)See above image.
D)See above image.
E)See above image.
25

Molecular chronometers is based on the concept that nucleic acid and amino acid sequences

  1. of similar molecules are quite different in two groups of organisms indicating a recent divergence between the groups.
  2. change over time without destroying their function because changes are neutral.
A)I only is true.
B)II only is true.
C)Both I and II are true.
D)Neither I nor II are true.
26

An oligonucleotide signature sequence is a set of nucleotide sequences that

  1. occur in a large number of phylogenetic groups.
  2. occur in most or all members of a particular phylogetic group.
A)I only is true.
B)II only is true.
C)Both I and II are true.
D)Neither I nor II are true.
27

Even though the two domains are procaryotic, the Archaea domain differs from the Bacteria domain in that the Archaea

  1. lack muramic acid in their cell walls.
  2. posses membrane lipids with ether-linked branched aliphatic chains.
A)I only is true.
B)II only is true.
C)Both I and II are true.
D)Neither I nor II are true.
28

The Whittaker five kingdom system of classification divides living organisms into which of the following kingdoms?
A)Archaea, Bacteria, Fungi, Plants, Animals
B)Monera, Protista, Plants, Animals, Fungi
C)Monera, Protista, Archaea, Animals, Fungi
D)Monera, Protista, Plants, Animals, Archaea
E)Viruses, Protista, Plants, Animals, Fungi
29

The Cavalier-Smith's eight kingdom system of classification includes all of the following except:
A)Protozoa
B)Eubacteria
C)Archezoa
D)Chromista
E)Virons
30

All of the following are used to characterize procaryotic organisms for the First Edition of Bergey's Manual of Systematic Bacteriologyexcept:
A)Gram-staining properties
B)presence of endospores
C)oxygen relationship
D)phylogenetic information
E)motility