MICROBIOLOGY WITH DISEASES BY
TAXONOMY COMPREHENSIVE
EXAMINATION TEST 2026 CERTIFICATION
EVALUATION PRACTICE BANK
◉ Susceptible host
Answer: Animal reservoirs and zoonoses
Human reservoirs and carriers
Nonliving reservoirs
◉ What is the significance of Koch's postulates?
Answer: Koch's postulates help determine the etiology (causation)
of an infectious disease
◉ what are the four Koch's postulates?
Answer: The microorganism must be present in all cases of disease.
The pathogen can be isolated from all diseased host and grown in
pure culture.
, The pathogen grown in pure culture must cause disease when
placed in a healthy animal.
The pathogen must be re-isolated from the new host and shown to
be identical to the original pathogen.
◉ What is a virulence factor?
Answer: enable pathogens to enter a host, adhere to host cells,
escape detection/killing by the immune system, cause damage
leading to disease
◉ Exotoxins
Answer: Include cytotoxins, neurotoxins, or enterotoxins
◉ Endotoxin
Answer: Lipid A of Gram negative bacteria
◉ What is the difference between signs and symptoms of an
infectious disease?
Answer: Symptoms
A change that is felt by a patient such as malaise (discomfort),
dizziness, fatigue, pain (headache), or chills, nausea
TAXONOMY COMPREHENSIVE
EXAMINATION TEST 2026 CERTIFICATION
EVALUATION PRACTICE BANK
◉ Susceptible host
Answer: Animal reservoirs and zoonoses
Human reservoirs and carriers
Nonliving reservoirs
◉ What is the significance of Koch's postulates?
Answer: Koch's postulates help determine the etiology (causation)
of an infectious disease
◉ what are the four Koch's postulates?
Answer: The microorganism must be present in all cases of disease.
The pathogen can be isolated from all diseased host and grown in
pure culture.
, The pathogen grown in pure culture must cause disease when
placed in a healthy animal.
The pathogen must be re-isolated from the new host and shown to
be identical to the original pathogen.
◉ What is a virulence factor?
Answer: enable pathogens to enter a host, adhere to host cells,
escape detection/killing by the immune system, cause damage
leading to disease
◉ Exotoxins
Answer: Include cytotoxins, neurotoxins, or enterotoxins
◉ Endotoxin
Answer: Lipid A of Gram negative bacteria
◉ What is the difference between signs and symptoms of an
infectious disease?
Answer: Symptoms
A change that is felt by a patient such as malaise (discomfort),
dizziness, fatigue, pain (headache), or chills, nausea
