Test Bank for Textbook of Diagnostic
Microbiology, 7th Edition | Verified
Chapters 1–41 | Newest 2025 Version
1. To survive, microbial inhabitants have learned to adapt by varying all of the
following, except:
A. Growth rate
B. Growth in all atmospheric conditions
C. Growth at particular temperatures
D. Bacterial shape
Answer: D
Rationale: The chapter discusses how microbial inhabitants evolve to survive in different
niches and habitats, covering slow growers, rapid growers, replication with scarce or
abundant nutrients, different atmospheric conditions, and temperature requirements.
Bacterial shape as a form of evolution is not discussed in this context .
2. Who was considered the father of protozoology and bacteriology?
A. Anton van Leeuwenhoek
B. Louis Pasteur
C. Carl Landsteiner
, D. Michael Douglas
Answer: A
Rationale: Anton van Leeuwenhoek is recognized as the inventor of the microscope and
the first person to observe microorganisms, which he called "beasties." This earned him
the title "father of protozoology and bacteriology." The other individuals listed were not
discussed in this context .
3. Prokaryotic cells have which of the following structures in their cytoplasm?
A. Golgi apparatus
B. Ribosomes
C. Mitochondria
D. Endoplasmic reticulum
Answer: B
Rationale: All structures listed are found in eukaryotic cells, but ribosomes are the only
ones that apply to prokaryotic cells. Prokaryotes lack membrane-bound organelles such
as Golgi apparatus, mitochondria, and endoplasmic reticulum .
4. This form of DNA is commonly found in eukaryotic cells:
A. Linear
B. Circular
C. Plasmid
D. Colloid
, Answer: A
Rationale: Circular and plasmid DNA are usually found only in bacteria (prokaryotes),
not eukaryotic cells. Eukaryotic cells contain linear DNA organized into chromosomes
within a nucleus. Colloid is a property of protein molecules and is not associated with
nucleotides .
5. The nuclear membrane in prokaryotes is:
A. Missing
B. Impenetrable
C. A classic membrane
D. A lipid bilayer membrane
Answer: A
Rationale: Prokaryotic cells do not have any membrane-bound structures in the
cytoplasm, including a structured nucleus. They lack a nuclear membrane, and their
genetic material is located in a region called the nucleoid .
6. A microorganism that is a unicellular organism and lacks a nuclear membrane
and true nucleus belongs to which classification?
A. Fungi
B. Bacteria
C. Algae
D. Parasite
, Answer: B
Rationale: Fungi, algae, and parasites are unicellular eukaryotic organisms that contain
a true nucleus with a nuclear membrane. Bacteria are prokaryotic and do not contain a
true nucleus or nuclear membrane .
7. In the laboratory, the clinical microbiologist is responsible for all the following,
except:
A. Isolating microorganisms
B. Selecting treatment for patients
C. Identifying microorganisms
D. Analyzing bacteria that cause disease
Answer: B
Rationale: Clinical microbiologists do not select treatment for patients. They provide
the physician with the name of the organism and information about antibiotics that can
kill the bacteria, but the final selection of treatment protocols is made by the physician .
8. What enables the microbiologist to select the correct media for primary culture
and optimize the chance of isolating a pathogenic organism?
A. Determining staining characteristics
B. Understanding the cell structure and biochemical pathways of an organism
C. Understanding the growth requirements of potential pathogens at specific body sites
D. Knowing the differences in cell walls of particular bacteria
Microbiology, 7th Edition | Verified
Chapters 1–41 | Newest 2025 Version
1. To survive, microbial inhabitants have learned to adapt by varying all of the
following, except:
A. Growth rate
B. Growth in all atmospheric conditions
C. Growth at particular temperatures
D. Bacterial shape
Answer: D
Rationale: The chapter discusses how microbial inhabitants evolve to survive in different
niches and habitats, covering slow growers, rapid growers, replication with scarce or
abundant nutrients, different atmospheric conditions, and temperature requirements.
Bacterial shape as a form of evolution is not discussed in this context .
2. Who was considered the father of protozoology and bacteriology?
A. Anton van Leeuwenhoek
B. Louis Pasteur
C. Carl Landsteiner
, D. Michael Douglas
Answer: A
Rationale: Anton van Leeuwenhoek is recognized as the inventor of the microscope and
the first person to observe microorganisms, which he called "beasties." This earned him
the title "father of protozoology and bacteriology." The other individuals listed were not
discussed in this context .
3. Prokaryotic cells have which of the following structures in their cytoplasm?
A. Golgi apparatus
B. Ribosomes
C. Mitochondria
D. Endoplasmic reticulum
Answer: B
Rationale: All structures listed are found in eukaryotic cells, but ribosomes are the only
ones that apply to prokaryotic cells. Prokaryotes lack membrane-bound organelles such
as Golgi apparatus, mitochondria, and endoplasmic reticulum .
4. This form of DNA is commonly found in eukaryotic cells:
A. Linear
B. Circular
C. Plasmid
D. Colloid
, Answer: A
Rationale: Circular and plasmid DNA are usually found only in bacteria (prokaryotes),
not eukaryotic cells. Eukaryotic cells contain linear DNA organized into chromosomes
within a nucleus. Colloid is a property of protein molecules and is not associated with
nucleotides .
5. The nuclear membrane in prokaryotes is:
A. Missing
B. Impenetrable
C. A classic membrane
D. A lipid bilayer membrane
Answer: A
Rationale: Prokaryotic cells do not have any membrane-bound structures in the
cytoplasm, including a structured nucleus. They lack a nuclear membrane, and their
genetic material is located in a region called the nucleoid .
6. A microorganism that is a unicellular organism and lacks a nuclear membrane
and true nucleus belongs to which classification?
A. Fungi
B. Bacteria
C. Algae
D. Parasite
, Answer: B
Rationale: Fungi, algae, and parasites are unicellular eukaryotic organisms that contain
a true nucleus with a nuclear membrane. Bacteria are prokaryotic and do not contain a
true nucleus or nuclear membrane .
7. In the laboratory, the clinical microbiologist is responsible for all the following,
except:
A. Isolating microorganisms
B. Selecting treatment for patients
C. Identifying microorganisms
D. Analyzing bacteria that cause disease
Answer: B
Rationale: Clinical microbiologists do not select treatment for patients. They provide
the physician with the name of the organism and information about antibiotics that can
kill the bacteria, but the final selection of treatment protocols is made by the physician .
8. What enables the microbiologist to select the correct media for primary culture
and optimize the chance of isolating a pathogenic organism?
A. Determining staining characteristics
B. Understanding the cell structure and biochemical pathways of an organism
C. Understanding the growth requirements of potential pathogens at specific body sites
D. Knowing the differences in cell walls of particular bacteria
