Microbiology Final Review Multiple
Choice Questions With Correct
Answers| 2026 Update
Which of the following is not considered a microorganism?
a. archaeon
b. bacterium
c. protozoan
d. mushroom - Ans--d. mushroom
An area of microbiology that is concerned with the occurrence of disease in
human populations is
a. immunology
b. parasitology
c. epidemiology
d. dioremediation - Ans--c. epidemiology
Which process involves the deliberate alteration of an organism's genetic
material?
a bioremediation
b. biotechnology
c. decomposition
d. recombinant DNA - Ans--d. recombinant DNA
A prominent difference between prokaryotic and eukaryotic cells is the
a. larger size of prokaryotes
b. lack of pigmentation in eukaryotes
c. presence of a nucleus in eukaryotes
d. presence of a cell wall in prokaryotes - Ans--c. presence of a nucleus in
eukaryotes
,Which of the following parts was absent from Leeuwenhoek's
microscopes?
a. focusing screw
b. lens
c. specimen holder
d. condenser - Ans--d. condenser
Abiogenesis refers to the
a. spontaneous generation of organisms from nonliving matter
b. development of life forms from preexisting life forms
c. development of aseptic technique
d. germ theory of disease - Ans--a. spontaneous generation of organisms
from nonliving matter
A hypothesis can be defines as
a. a belief based on knowledge
b. knowledge based on belief
c. a scientific explanation that is subject to testing
d. a theory that has been thoroughly tested - Ans--c. a scientific explanation
that is subject to testing
Which early microbiologist was most responsible for developing standard
microbiology laboratory techniques?
a. Louis Pasteur
b. Robert Koch
c. Carl von Linne
d. John Tyndall - Ans--b. Robert Koch
Which scientist is most responsible for finally laying the theory of
spontaneous generation to rest?
a. Joseph Lister
b. Robert Koch
c. Francesco Redi
,d. Louis Pasteur - Ans--d. Louis Pasteur
When a hypothesis has been thoroughly supported by long-term study and
data, it is considered
a. a law
b. a speculation
c. a theory
d. proved - Ans--c. a theory
Which is the correct order of the taxonomic categories, going from most
specific to most general?
a. domain, kingdom, phylum, class, order, family, genus, species
b. division, domain, kingdom, class, family, genus, species
c. species, genus, family, order, class, phylum, kingdom, domain
d. species, family, class, order, phylum, kingdom - Ans--c. species, genus,
family, order, class, phylum, kingdom, domain
By definition, organisms in the same ___________ are more closely
relation than are those in the same ________.
a. order, family
b. class, phylum
c. family, genus
d. phylum, division - Ans--b. class, phylum
Which of the following are prokaryotic?
a. bacteria
b. archaea
c. protists
d. both a and b - Ans--d. both a and b
The smallest unit of matter with unique characteristics is
a. an electron
b. a molecule
, c. an atom
d. a proton - Ans--c. an atom
The __________ charge of a proton is exactly balanced by the _______
charge of a/an _________
a. negative, positive, electron
b. positive, neutral, neutron
c. positive, negative, electron
d. neutral, negative, electron - Ans--c. positive, negative, electron
Electrons move around the nucleus of an atom in pathways called
a. shells
b. orbitals
c. circles
d. rings - Ans--b. orbitals
Which parts of an element do not vary in number?
a. electrons
b. neutrons
c. protons
d. All of these vary - Ans--c. protons
If a substance contains two or more elements of different types, it is
considered
a. a compound
b. a monomer
c. a molecule
d. organic - Ans--a. a compound
Bonds in which atoms share electrons are defined as _____ bonds
a. hydrogen
b. ionic
c. double
Choice Questions With Correct
Answers| 2026 Update
Which of the following is not considered a microorganism?
a. archaeon
b. bacterium
c. protozoan
d. mushroom - Ans--d. mushroom
An area of microbiology that is concerned with the occurrence of disease in
human populations is
a. immunology
b. parasitology
c. epidemiology
d. dioremediation - Ans--c. epidemiology
Which process involves the deliberate alteration of an organism's genetic
material?
a bioremediation
b. biotechnology
c. decomposition
d. recombinant DNA - Ans--d. recombinant DNA
A prominent difference between prokaryotic and eukaryotic cells is the
a. larger size of prokaryotes
b. lack of pigmentation in eukaryotes
c. presence of a nucleus in eukaryotes
d. presence of a cell wall in prokaryotes - Ans--c. presence of a nucleus in
eukaryotes
,Which of the following parts was absent from Leeuwenhoek's
microscopes?
a. focusing screw
b. lens
c. specimen holder
d. condenser - Ans--d. condenser
Abiogenesis refers to the
a. spontaneous generation of organisms from nonliving matter
b. development of life forms from preexisting life forms
c. development of aseptic technique
d. germ theory of disease - Ans--a. spontaneous generation of organisms
from nonliving matter
A hypothesis can be defines as
a. a belief based on knowledge
b. knowledge based on belief
c. a scientific explanation that is subject to testing
d. a theory that has been thoroughly tested - Ans--c. a scientific explanation
that is subject to testing
Which early microbiologist was most responsible for developing standard
microbiology laboratory techniques?
a. Louis Pasteur
b. Robert Koch
c. Carl von Linne
d. John Tyndall - Ans--b. Robert Koch
Which scientist is most responsible for finally laying the theory of
spontaneous generation to rest?
a. Joseph Lister
b. Robert Koch
c. Francesco Redi
,d. Louis Pasteur - Ans--d. Louis Pasteur
When a hypothesis has been thoroughly supported by long-term study and
data, it is considered
a. a law
b. a speculation
c. a theory
d. proved - Ans--c. a theory
Which is the correct order of the taxonomic categories, going from most
specific to most general?
a. domain, kingdom, phylum, class, order, family, genus, species
b. division, domain, kingdom, class, family, genus, species
c. species, genus, family, order, class, phylum, kingdom, domain
d. species, family, class, order, phylum, kingdom - Ans--c. species, genus,
family, order, class, phylum, kingdom, domain
By definition, organisms in the same ___________ are more closely
relation than are those in the same ________.
a. order, family
b. class, phylum
c. family, genus
d. phylum, division - Ans--b. class, phylum
Which of the following are prokaryotic?
a. bacteria
b. archaea
c. protists
d. both a and b - Ans--d. both a and b
The smallest unit of matter with unique characteristics is
a. an electron
b. a molecule
, c. an atom
d. a proton - Ans--c. an atom
The __________ charge of a proton is exactly balanced by the _______
charge of a/an _________
a. negative, positive, electron
b. positive, neutral, neutron
c. positive, negative, electron
d. neutral, negative, electron - Ans--c. positive, negative, electron
Electrons move around the nucleus of an atom in pathways called
a. shells
b. orbitals
c. circles
d. rings - Ans--b. orbitals
Which parts of an element do not vary in number?
a. electrons
b. neutrons
c. protons
d. All of these vary - Ans--c. protons
If a substance contains two or more elements of different types, it is
considered
a. a compound
b. a monomer
c. a molecule
d. organic - Ans--a. a compound
Bonds in which atoms share electrons are defined as _____ bonds
a. hydrogen
b. ionic
c. double
