BIOL 23000 Microbiology Exam 3 Questions and Answers
Comprehensive Study Guide with Verified Solutions,
Bacterial Classification and Phylogenetics, Bergeys Manual
Comparison, Taxonomy and Identification Methods, Fungal
Classification, Scientific Nomenclature Principles, DNA
Hybridization and rRNA Sequencing, Prokaryotic and
Eukaryotic Differences, Gram Positive and Gram Negative
Bacteria, Mycoplasma Characteristics, Domains of Life,
Ribosomes and Cell Structures, Microbial Identification
Techniques Exam Questions Verified and Provided with
Complete A+ Graded Answers Latest Updated 2026
Bergey’s Manual of Systematic Bacteriology differs from Bergey’s Manual of Determinative
Bacteriology in that the former
a. groups bacteria into species.
b. groups bacteria according to phylogenetic relationships.
c. groups bacteria according to pathogenic properties.
d. groups bacteria into 19 species.
e. all of the above
b. groups bacteria according to phylogenetic relationships.
,Bacillus and Lactobacillus are not in the same order. This indicates that which one 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
e. morphological characteristics
Which of the following is used to classify organisms into the Kingdom Fungi?
a. ability to photosynthesize; possess a cell wall
b. unicellular; possess cell wall; prokaryotic
c. unicellular; lacking cell wall; eukaryotic
d. absorptive; possess cell wall; eukaryotic
e. ingestive; lacking cell wall; multicellular; prokaryotic
d. absorptive; possess cell wall; eukaryotic
,Which of the following is false about scientific nomenclature?
a. Each name is specific.
b. Names vary with geographical location.
c. The names are standardized.
d. Each name consists of a genus and specific epithet.
e. It was first designed by Linnaeus.
b. Names vary with geographical location.
You could identify an unknown bacterium by all of the following except
a. hybridizing a DNA probe from a known bacterium with the unknown’s DNA.
b. making a fatty acid profile of the unknown.
c. specific antiserum agglutinating the unknown.
d. ribosomal RNA sequencing.
, e. percentage of guanine + cytosine.
e. percentage of guanine + cytosine.
The wall-less mycoplasmas are considered to be related to gram-positive bacteria. Which of the
following would provide the most compelling evidence for this?
a. They share common rRNA sequences.
b. Some gram-positive bacteria and some mycoplasmas produce catalase.
c. Both groups are prokaryotic.
d. Some gram-positive bacteria and some mycoplasmas have coccus-shaped cells.
e. Both groups contain human pathogens.
a. They share common rRNA sequences.
Into which group would you place a multicellular organism that has a mouth and lives inside the
human liver?
a. Animalia
b. Fungi
c. Plantae
d. Firmicutes (gram-positive bacteria)
e. Proteobacteria (gram-negative bacteria)
a. Animalia
Comprehensive Study Guide with Verified Solutions,
Bacterial Classification and Phylogenetics, Bergeys Manual
Comparison, Taxonomy and Identification Methods, Fungal
Classification, Scientific Nomenclature Principles, DNA
Hybridization and rRNA Sequencing, Prokaryotic and
Eukaryotic Differences, Gram Positive and Gram Negative
Bacteria, Mycoplasma Characteristics, Domains of Life,
Ribosomes and Cell Structures, Microbial Identification
Techniques Exam Questions Verified and Provided with
Complete A+ Graded Answers Latest Updated 2026
Bergey’s Manual of Systematic Bacteriology differs from Bergey’s Manual of Determinative
Bacteriology in that the former
a. groups bacteria into species.
b. groups bacteria according to phylogenetic relationships.
c. groups bacteria according to pathogenic properties.
d. groups bacteria into 19 species.
e. all of the above
b. groups bacteria according to phylogenetic relationships.
,Bacillus and Lactobacillus are not in the same order. This indicates that which one 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
e. morphological characteristics
Which of the following is used to classify organisms into the Kingdom Fungi?
a. ability to photosynthesize; possess a cell wall
b. unicellular; possess cell wall; prokaryotic
c. unicellular; lacking cell wall; eukaryotic
d. absorptive; possess cell wall; eukaryotic
e. ingestive; lacking cell wall; multicellular; prokaryotic
d. absorptive; possess cell wall; eukaryotic
,Which of the following is false about scientific nomenclature?
a. Each name is specific.
b. Names vary with geographical location.
c. The names are standardized.
d. Each name consists of a genus and specific epithet.
e. It was first designed by Linnaeus.
b. Names vary with geographical location.
You could identify an unknown bacterium by all of the following except
a. hybridizing a DNA probe from a known bacterium with the unknown’s DNA.
b. making a fatty acid profile of the unknown.
c. specific antiserum agglutinating the unknown.
d. ribosomal RNA sequencing.
, e. percentage of guanine + cytosine.
e. percentage of guanine + cytosine.
The wall-less mycoplasmas are considered to be related to gram-positive bacteria. Which of the
following would provide the most compelling evidence for this?
a. They share common rRNA sequences.
b. Some gram-positive bacteria and some mycoplasmas produce catalase.
c. Both groups are prokaryotic.
d. Some gram-positive bacteria and some mycoplasmas have coccus-shaped cells.
e. Both groups contain human pathogens.
a. They share common rRNA sequences.
Into which group would you place a multicellular organism that has a mouth and lives inside the
human liver?
a. Animalia
b. Fungi
c. Plantae
d. Firmicutes (gram-positive bacteria)
e. Proteobacteria (gram-negative bacteria)
a. Animalia
