Question 1

Chloroplasts possess circular DNA and reproduce by binary fission.

Accepted Answer

A) True 
 B)False

Question 2

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.F) B) and C)
G) C) and D)

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

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.F) A) and D)
G) A) and C)

Question 5

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.F) B) and C)
G) A) and E)

Question 6

The phylogenetic classification of bacteria is based on

Accepted Answer

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

Question 7

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.F) B) and E)
G) A) and B)

Question 8

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.F) C) and D)
G) D) and E)

Question 9

Serological testing is used for screening bacterial isolates for similarities.

Accepted Answer

A) True 
 B)False  True

Question 10

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 5F) B) and E)
G) A) and B)

Question 11

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 sequencingF) B) and C)
G) A) and E)

Question 12

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)   ProtistF) B) and D)
G) B) and E) C

Question 13

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.F) B) and E)
G) C) and D)

Question 14

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.F) B) and E)
G) All of the above

Question 15

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.F) A) and C)
G) A) and B)

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

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)   multicellularF) B) and C)
G) A) and B)

Question 18

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.F) B) and D)
G) B) and E) A

Question 19

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 the...

Question 20

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 synthesisF) None of the above
G) A) and D)

Exam 10: Classification of Microorganisms

Chloroplasts possess circular DNA and reproduce by binary fission.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The phylogenetic classification of bacteria is based on

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

Serological testing is used for screening bacterial isolates for similarities.

Correct AnswerverifiedTrue

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedC

Serological testing is based on the fact that

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What is the outstanding characteristic of the Kingdom Fungi?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following characterizes the Domain Bacteria?

Correct AnswerverifiedShow Answer

A genus can best be defined as

Correct AnswerverifiedA

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

Correct AnswerverifiedShow Answer

Bacteria and Archaea are similar in which of the following?

Correct AnswerverifiedShow Answer

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True

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C

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A

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