MICRO 2100 Unit 1 Exam –
Foundations of Microbiology,
Chemotherapy & Microbial
Classification|Verified Questions
Provided with A+ Graded
Rationales Latest Updated 2026
Chemotherapy
Treat of disease by using chemical substances
Antibiotic
Chemicals produces naturally by bacteria or fungi to act against other microorganisms
Synthetic drugs
chemotherapeutic agents prepared from chemicals in the laboratory
Pathogen
A disease causing microorganism
Pure culture
Population of cells or multicellular organisms growing in the absence of other species or types
Isolate
Separation of a strain from a natural, mixed population of living microbes.
Normal microbiota
Population of microorganism found in and on a host animal or environment that normally
cause no harm
Ignaz Semmelwies
Used hand washing to prevent transfer of disease between patients by physicians
Joseph Lister
, Began using disinfectants and antiseptics during surgery
Robert Koch
Established protocol to determine cause of infectious disease and contributed to the germ
theory of disease
Koch's postulate 1
Suspected pathogen must be found in every case of disease and not be found in healthy
individuals
Koch's postulate 2
Suspected pathogen can be isolated and grown in pure culture
Koch's postulate 3
A healthy test subject infected with the suspected pathogen must develop the same signs and
symptoms of disease as seen in postulate
Koch's postulate 4
Pathogen must be re-isolated from the new host and must be identical to the pathogen from
postulate 2
Which specific diseases was Koch able to identify causative pathogens?
TB, Cholera and Anthrax
Taxonomy
the classification, description, identification, and naming of living organisms
Binomial nomenclature
Two word naming system identifying organisms by genus and species
Acellular
Not composed of cells
Virus
Acellular microbe made of proteins and genetic material, either DNA or RNA but never both
Viroid
Virus like containing only a short strand of circular RNA that can Self replicate
Foundations of Microbiology,
Chemotherapy & Microbial
Classification|Verified Questions
Provided with A+ Graded
Rationales Latest Updated 2026
Chemotherapy
Treat of disease by using chemical substances
Antibiotic
Chemicals produces naturally by bacteria or fungi to act against other microorganisms
Synthetic drugs
chemotherapeutic agents prepared from chemicals in the laboratory
Pathogen
A disease causing microorganism
Pure culture
Population of cells or multicellular organisms growing in the absence of other species or types
Isolate
Separation of a strain from a natural, mixed population of living microbes.
Normal microbiota
Population of microorganism found in and on a host animal or environment that normally
cause no harm
Ignaz Semmelwies
Used hand washing to prevent transfer of disease between patients by physicians
Joseph Lister
, Began using disinfectants and antiseptics during surgery
Robert Koch
Established protocol to determine cause of infectious disease and contributed to the germ
theory of disease
Koch's postulate 1
Suspected pathogen must be found in every case of disease and not be found in healthy
individuals
Koch's postulate 2
Suspected pathogen can be isolated and grown in pure culture
Koch's postulate 3
A healthy test subject infected with the suspected pathogen must develop the same signs and
symptoms of disease as seen in postulate
Koch's postulate 4
Pathogen must be re-isolated from the new host and must be identical to the pathogen from
postulate 2
Which specific diseases was Koch able to identify causative pathogens?
TB, Cholera and Anthrax
Taxonomy
the classification, description, identification, and naming of living organisms
Binomial nomenclature
Two word naming system identifying organisms by genus and species
Acellular
Not composed of cells
Virus
Acellular microbe made of proteins and genetic material, either DNA or RNA but never both
Viroid
Virus like containing only a short strand of circular RNA that can Self replicate
