Bio 2400: Exam 3 Microbiology Review
MCC Questions and Answers|| GRADED
A+|| LATEST UPDATE 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
Into which group would you place a photosynthetic organism that lacks a nucleus
and has a thin peptidoglycan wall surrounded by an outer membrane?
a. Animalia
b. Fungi
c. Plantae
d. Firmicutes (gram-positive bacteria)
e. Proteobacteria (gram-negative bacteria)
, e. Proteobacteria (gram-negative bacteria)
Which is (are) found in all three domains? Select all that apply.
a. 9 + 2 flagella
b. 70S ribosome
c. fimbria
d. nucleus
e. peptidoglycan
f. plasma membrane
b. 70S ribosome
f. plasma membrane
Which is (are) found only in prokaryotes? Select all that apply.
a. 9 + 2 flagella
b. 70S ribosome
c. fimbria
d. nucleus
e. peptidoglycan
f. plasma membrane
c. fimbria
e. peptidoglycan
If you Gram-stained the bacteria that live in the human intestine, you would
expect to find mostly
a. gram-positive cocci.
MCC Questions and Answers|| GRADED
A+|| LATEST UPDATE 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
Into which group would you place a photosynthetic organism that lacks a nucleus
and has a thin peptidoglycan wall surrounded by an outer membrane?
a. Animalia
b. Fungi
c. Plantae
d. Firmicutes (gram-positive bacteria)
e. Proteobacteria (gram-negative bacteria)
, e. Proteobacteria (gram-negative bacteria)
Which is (are) found in all three domains? Select all that apply.
a. 9 + 2 flagella
b. 70S ribosome
c. fimbria
d. nucleus
e. peptidoglycan
f. plasma membrane
b. 70S ribosome
f. plasma membrane
Which is (are) found only in prokaryotes? Select all that apply.
a. 9 + 2 flagella
b. 70S ribosome
c. fimbria
d. nucleus
e. peptidoglycan
f. plasma membrane
c. fimbria
e. peptidoglycan
If you Gram-stained the bacteria that live in the human intestine, you would
expect to find mostly
a. gram-positive cocci.
