Question 1

A genus can best be defined as

Accepted Answer

A)  a taxon composed of one or more species and a classification level lying below family. 
B)  the most specific taxon. 
C)  a taxon belonging to a species. 
D)  a taxon composed of families. 
E)  a taxon comprised of classes. 
A)  a taxon composed of one or more species and a classification level lying below family. 
B)  the most specific taxon. 
C)  a taxon belonging to a species. 
D)  a taxon composed of families. 
E)  a taxon comprised of classes. A

Question 2

Serological testing is used for screening bacterial isolates for similarities.

Accepted Answer

A) True 
 B)False  True

Question 3

Into which group would you place a unicellular organism that has 70S ribosomes and a peptidoglycan cell wall?

Accepted Answer

A)  Animalia 
B)  Plantae 
C)  Bacteria 
D)  Fungi 
E)  Protist 
A)  Animalia 
B)  Plantae 
C)  Bacteria 
D)  Fungi 
E)  Protist C

Question 4

Figure 10.5
   Choose one of the phylogenetic schemes in Figure 10.5 and explain why you feel it is preferable to the others.

Accepted Answer

The answer of Figure 10.5
   Choose one of...

Question 5

Figure 10.3 This figure shows the results of a gel electrophoresis separation of restriction fragments of the DNA of different organisms.
  In Figure 10.3, which two are most closely related?

Accepted Answer

A)  2 and 5 
B)  4 and 5 
C)  2 and 4 
D)  1 and 3 
E)  3 and 5 
A)  2 and 5 
B)  4 and 5 
C)  2 and 4 
D)  1 and 3 
E)  3 and 5

Question 6

Which of the following provides taxonomic information that includes the information obtained in the others listed?

Accepted Answer

A)  nucleic acid hybridization 
B)  nucleic acid-base composition 
C)  cladogram 
D)  biochemical tests 
E)  amino acid sequencing 
A)  nucleic acid hybridization 
B)  nucleic acid-base composition 
C)  cladogram 
D)  biochemical tests 
E)  amino acid sequencing

Question 7

What is the outstanding characteristic of the Kingdom Fungi?

Accepted Answer

A)  Members absorb dissolved inorganic matter. 
B)  Members absorb dissolved organic matter. 
C)  All members are microscopic. 
D)  All members are photosynthetic. 
E)  All members are macroscopic. 
A)  Members absorb dissolved inorganic matter. 
B)  Members absorb dissolved organic matter. 
C)  All members are microscopic. 
D)  All members are photosynthetic. 
E)  All members are macroscopic.

Question 8

Chloroplasts possess circular DNA and reproduce by binary fission.

Accepted Answer

A) True 
 B)False

Question 9

As molecular techniques improve, scientists are finding it necessary to reclassify some genera.

Accepted Answer

A) True 
 B)False

Question 10

The phylogenetic classification of bacteria is based on

Accepted Answer

A)  cell morphology. 
B)  Gram reaction. 
C)  habitat. 
D)  diseases. 
E)  rRNA sequences. 
A)  cell morphology. 
B)  Gram reaction. 
C)  habitat. 
D)  diseases. 
E)  rRNA sequences.

Question 11

Bacteria and Archaea are similar in which of the following?

Accepted Answer

A)  sensitivity to antibiotics 
B)  peptidoglycan cell walls 
C)  plasma membrane ester linkage 
D)  considered prokaryotic cells 
E)  methionine as the start signal for protein synthesis 
A)  sensitivity to antibiotics 
B)  peptidoglycan cell walls 
C)  plasma membrane ester linkage 
D)  considered prokaryotic cells 
E)  methionine as the start signal for protein synthesis

Question 12

Which of the following is the best evidence for a three-domain system?

Accepted Answer

A)  There are three distinctly different Gram reactions. 
B)  There are three distinctly different sets of metabolic reactions. 
C)  Nucleotide sequences in ribosomal RNA vary between all three domains. 
D)  Some bacteria live in extreme environments. 
E)  There are three distinctly different types of nuclei. 
A)  There are three distinctly different Gram reactions. 
B)  There are three distinctly different sets of metabolic reactions. 
C)  Nucleotide sequences in ribosomal RNA vary between all three domains. 
D)  Some bacteria live in extreme environments. 
E)  There are three distinctly different types of nuclei.

Question 13

Which of the following statements about members of the Kingdom Plantae is FALSE?

Accepted Answer

A)  They synthesize organic molecules. 
B)  They use organic carbon sources. 
C)  They are multicellular. 
D)  They undergo photosynthesis. 
E)  They are composed of eukaryotic cells. 
A)  They synthesize organic molecules. 
B)  They use organic carbon sources. 
C)  They are multicellular. 
D)  They undergo photosynthesis. 
E)  They are composed of eukaryotic cells.

Question 14

Serological testing is based on the fact that

Accepted Answer

A)  the human body makes antibodies against bacteria. 
B)  antibodies react specifically with an antigen. 
C)  bacteria clump together when mixed with any antibodies. 
D)  antibodies cause the formation of antigens. 
E)  all bacteria have the same antigens. 
A)  the human body makes antibodies against bacteria. 
B)  antibodies react specifically with an antigen. 
C)  bacteria clump together when mixed with any antibodies. 
D)  antibodies cause the formation of antigens. 
E)  all bacteria have the same antigens.

Question 15

Pure cultures of the same species are not always identical in all ways.

Accepted Answer

A) True 
 B)False

Question 16

A biochemical test, in the microbiology world, is used to determine

Accepted Answer

A)  staining characteristics. 
B)  amino acid sequences of enzymes. 
C)  capability of a microbe to perform a specific enzymatic activity. 
D)  nucleic acid-base composition of DNA sequences. 
E)  All of the answers are correct. 
A)  staining characteristics. 
B)  amino acid sequences of enzymes. 
C)  capability of a microbe to perform a specific enzymatic activity. 
D)  nucleic acid-base composition of DNA sequences. 
E)  All of the answers are correct.

Question 17

Which of the following statements is a reason for NOT classifying viruses in one of the three domains of life (Bacteria, Archaea, Eukarya) rather than in a fourth separate domain?

Accepted Answer

A)  Viruses direct anabolic pathways of host cells. 
B)  Viruses are not composed of cells. 
C)  Some viruses can incorporate their genome into a hostʹs genome. 
D)  Viruses are obligate parasites. 
E)  All of the answers are correct. 
A)  Viruses direct anabolic pathways of host cells. 
B)  Viruses are not composed of cells. 
C)  Some viruses can incorporate their genome into a hostʹs genome. 
D)  Viruses are obligate parasites. 
E)  All of the answers are correct.

Question 18

One of the most popular taxonomic tools is DNA fingerprinting to develop profiles of organisms. These profiles provide direct information about

Accepted Answer

A)  antigenic composition. 
B)  protein composition. 
C)  the presence of specific genes. 
D)  the similarities between nucleotide sequences. 
E)  enzymatic activities. 
A)  antigenic composition. 
B)  protein composition. 
C)  the presence of specific genes. 
D)  the similarities between nucleotide sequences. 
E)  enzymatic activities.

Question 19

Which of the following characterizes the Domain Bacteria?

Accepted Answer

A)  prokaryotic cells; ester linkages in phospholipids 
B)  prokaryotic cells; ether linkages in phospholipids 
C)  complex cellular structures 
D)  eukaryotic cells; ester linkages in phospholipids 
E)  multicellular 
A)  prokaryotic cells; ester linkages in phospholipids 
B)  prokaryotic cells; ether linkages in phospholipids 
C)  complex cellular structures 
D)  eukaryotic cells; ester linkages in phospholipids 
E)  multicellular

Question 20

You discovered a unicellular organism that lacks a nucleus and peptidoglycan. You suspect the organism is in the group

Accepted Answer

A)  Animalia. 
B)  Fungi. 
C)  Plantae. 
D)  Archaea. 
E)  Bacteria. 
A)  Animalia. 
B)  Fungi. 
C)  Plantae. 
D)  Archaea. 
E)  Bacteria.

Exam 10: Classification of Microorganisms

A genus can best be defined as

Serological testing is used for screening bacterial isolates for similarities.

Into which group would you place a unicellular organism that has 70S ribosomes and a peptidoglycan cell wall?

Figure 10.5 Choose one of the phylogenetic schemes in Figure 10.5 and explain why you feel it is preferable to the others.

Figure 10.3 This figure shows the results of a gel electrophoresis separation of restriction fragments of the DNA of different organisms. In Figure 10.3, which two are most closely related?

Which of the following provides taxonomic information that includes the information obtained in the others listed?

What is the outstanding characteristic of the Kingdom Fungi?

Chloroplasts possess circular DNA and reproduce by binary fission.

As molecular techniques improve, scientists are finding it necessary to reclassify some genera.

The phylogenetic classification of bacteria is based on

Bacteria and Archaea are similar in which of the following?

Which of the following is the best evidence for a three-domain system?

Which of the following statements about members of the Kingdom Plantae is FALSE?

Serological testing is based on the fact that

Pure cultures of the same species are not always identical in all ways.

A biochemical test, in the microbiology world, is used to determine

Which of the following statements is a reason for NOT classifying viruses in one of the three domains of life (Bacteria, Archaea, Eukarya) rather than in a fourth separate domain?

One of the most popular taxonomic tools is DNA fingerprinting to develop profiles of organisms. These profiles provide direct information about

Which of the following characterizes the Domain Bacteria?

You discovered a unicellular organism that lacks a nucleus and peptidoglycan. You suspect the organism is in the group

The Microbial World and You

Chemical Principles

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic Cells

Microbial Metabolism

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Dna Technology

The Prokaryotes: Domains Bacteria and Archaea

The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

Viruses, Viroids, and Prions

Principles of Disease and Epidemiology

Microbial Mechanisms of Pathogenicity

Innate Immunity: Nonspecific Defenses of the Host

Adaptive Immunity: Specific Defenses of the Host

Practical Applications of Immunology

Disorders Associated With the Immune System

Antimicrobial Drugs

Microbial Diseases of the Skin and Eyes

Microbial Diseases of the Nervous System

Microbial Diseases of the Cardiovascular and Lymphatic Systems

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Disease of the Urinary and Reproductive Systems

Environmental Microbiology

Applied and Industrial Microbiology

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