Microbiology 020 - General Microbiology » Fall 2020 » Exam 1
Need help with your exam preparation?
Get Answers to this exam for $6 USD.
Get Answers to all exams in [ Microbiology 020 - General Microbiology ] course for $25 USD.
Existing Quiz Clients Login here
Question #1
Which statement is generally NOT true?
A.
Microbial cells exist as single cells.
B.
Microbial cells carry out their life processes of growth independently.
C.
Viruses are living entity ouside the host body
D.
Microbial cells exclude the cells of plants and animals.
Question #2
The theory of spontaneous generation was refuted by the work of
A.
Robert Koch.
B.
Robert Hooke.
C.
Louis Pasteur.
D.
Antoni van Leeuwenhoek.
Question #3
A Pasteur flask has a(n)
A.
swan neck to prevent particulate matter from getting into the main body of the flask
B.
secondary opening at the base to allow for drainage.
C.
inverted upper edge to prevent spillage while swirling.
D.
double neck so two substances may be added at the same time.
Question #4
A pure culture
A.
is sterile.
B.
is made of a clearly defined chemical medium.
C.
was cultured for a certified stock culture.
D.
is a population of identical cells.
Question #5
Prokaryotes are made up of which two groups?
A.
protozoa and animals
B.
Bacteria andArchaea
C.
Archaea and fungi
D.
Bacteria and fungi
Question #6
The Gram stain differentiates bacterial cells into gram positive and gram negative based on differences in the
A.
genomic content.
B.
cell wall structure.
C.
cell's metabolic capabilities.
D.
presence of a plasmid.
Question #7
Organisms most likely to be found in extreme environments are
A.
Bacteria.
B.
fungi.
C.
viruses.
D.
Archaea.
Question #8
When the oil-immersion lens is used,
A.
objects are held in place on the microscope slide.
B.
light rays are scattered so unnecessary background material is not seen.
C.
light rays are collected to increase clarity
D.
magnification of objects is increased by about tenfold.
Question #9
The lipopolysaccharide (LPS) layer is found ONLY in the cell wall of
A.
Archaea.
B.
gram-positiveBacteria.
C.
Eukarya.
D.
gram-negative Bacteria.
Question #10
An endotoxin is
A.
a toxin known for its primary attack on the epidermis of mammals.
B.
the toxic portion of the LPS.
C.
a toxin produced within archaeal cells.
D.
the toxin produced in the periplasm of most bacteria.
Question #11
What is the biological function of endospores?
A.
They are formed as evaginations of the bacterial cell walls.
B.
They enable organisms to endure extremes of temperature, drying, and nutrient depletion.
C.
They are bacterial reproductive structures.
D.
All of the above are endospore functions.
Question #12
When does endospore formation commence?
A.
when bacterial growth ceases due to limitation of an essential nutrient
B.
following bacterial death
C.
when the bacterium is undergoing binary fission
D.
when bacteria are dividing exponentially
Question #13
A bacterial species differs from a species of eukaryotic organisms in that a bacterial species
A.
Breeds with its own species
B.
Does not breed with other species.
C.
Is a population of cells with similar characteristics.
D.
Has a limited geographical distribution.
E.
Can be distinguished from other bacterial species.
Question #14
Biochemical tests are used to determine
A.
Enzymatic activities.
B.
Amino acid sequences.
C.
Nucleic acid-base composition.
D.
Staining characteristics.
E.
All of the above.
Question #15
The phylogenetic classification of bacteria is based on
A.
Cell morphology.
B.
Habitat.
C.
Gram reaction.
D.
Diseases.
E.
rRNA sequences.
Question #16
In the scientific name Enterobacter aerogenes, Enterobacter is the
A.
Family.
B.
C.
Genus.
D.
Specific epithet.
E.
Kingdom.
F.
Order.
Question #17
Serological testing is based on the fact that
A.
The human body makes antibodies against bacteria.
B.
Antibodies react specifically with an antigen.
C.
All bacteria have the same antigens.
D.
Bacteria clump together when mixed with any antibodies.
E.
Antibodies cause the formation of antigens.
Question #18
Phage typing is based on the fact that
A.
Bacteria are destroyed by viruses.
B.
Staphylococcus causes infections
C.
Bacterial viruses attack specific cells.
D.
Phages and bacteria are related.
E.
Viruses cause disease.
Question #19
Nucleic acid hybridization is based on the fact that
A.
All cells have DNA.
B.
The strands of DNA can be separated.
C.
Pairing between complementary bases occurs.
D.
DNA is composed of genes.
E.
A chromosome is composed of complementary strands.
Question #20
A clone is
A.
A mound of cells on an agar medium.
B.
A genetically engineered cell.
C.
A taxon composed of species.
D.
Genetically identical cells derived from a single cell.
E.
None of the above.
Question #21
Which of the following is NOT a domain in the three-domain system?
A.
Animalia
B.
Eukarya
C.
Bacteria
D.
Archaea
Question #22
Who was the first to observe microorganisms with a microscope?
A.
van Leeuwenhoek
B.
Koch
C.
Pasteur
D.
Weizmann
E.
Hooke
Question #23
Which of the following pairs is mismatched?
A.
Lister aseptic surgery
B.
Pasteur fermentation
C.
Hooke cell theory
D.
Jenner vaccines
E.
van Leeuwenhoek germ theory
Question #24
Which of the following statements is true?
A.
Fungi are plants.
B.
Protozoa have rigid cell walls.
C.
Algae are parasites.
D.
Bacteria cannot move.
E.
Viruses cannot reproduce outside a host cell.
Question #25
Which of the following pairs is mismatched?
A.
Chemotherapy treatment of disease
B.
Penicillin antibiotic
C.
Normal microbiota harmful
D.
Pathogen disease causing
E.
Vaccine a preparation of microorganisms
Question #26
A multicellular organism that has chitin cell walls and absorbs organic material is a(n)
A.
Helminth.
B.
Bacterium.
C.
Fungus.
D.
Alga.
E.
Virus.
Question #27
Archaea differ from bacteria in that archaea
A.
Lack nuclei.
B.
Use organic compounds for food.
C.
Lack peptidoglycan.
D.
Are prokaryotic.
E.
Reproduce by binary fission.
Question #28
Which of the following statements is false?
A.
All fungi are multicellular.
B.
All fungi have nuclear membranes.
C.
All bacteria lack nuclear membranes.
D.
All protozoa are unicellular.
E.
All viruses are parasites
Question #29
Semmelweis advocated handwashing as a method of preventing which of the following diseases?
A.
cholera
B.
smallpox
C.
syphilis
D.
anthrax
E.
puerperal fever
Question #30
Which of the following scientists was the first to develop a taxonomic system for classifying organisms?
A.
Lister
B.
Needham
C.
Pasteur
D.
Leeuwenhoek
E.
Linnaeus
Question #31
Who discovered penicillin?
A.
Pasteur
B.
Kitasato
C.
Ehrlich
D.
Domagk
E.
Fleming
Question #32
Which of the following chemical substances contributes to the unique characteristics of acid-fast bacteria?
A.
lipoteichoic acid
B.
peptidoglycan
C.
endotoxin
D.
mycolic acid
E.
N-acetylglucosamine
Question #33
Bergey's Manual contains
A.
recipes for bacterial growth media.
B.
rules for naming new bacterial species.
C.
genetic sequences of prokaryotes
D.
classification schemes for prokaryotes
E.
treatments for bacterial diseases.
Question #34
Cocci can be spherical as well as kidney-shaped.
A.
TRUE
B.
FALSE
Question #35
Christian Gram devised a staining technique that divides all bacteria into two groups.
A.
TRUE
B.
FALSE
Question #36
Koch's postulates can be used to prove the causes of infectious diseases.
A.
FALSE
B.
TRUE
Question #37
Prokaryotic chromosomes are generally linear.
A.
TRUE
B.
FALSE
Question #38
Ribosomal RNAs can be used to study phylogenetic relationships between organisms.
A.
TRUE
B.
FALSE
Question #39
Teichoic acids are commonly found in gram-negative cell walls.
A.
FALSE
B.
TRUE
Question #40
Most microorganisms are pathogenic.
A.
FALSE
B.
TRUE
Question #41
Ribosomes function primarily in energy production.
A.
TRUE
B.
FALSE
Question #42
A differential stain is called "differential" because it does not stain all kinds of cells the same
A.
TRUE
B.
FALSE
Question #43
Which of the following pairs is mismatched?
A.
Jenner vaccination
B.
Ehrlich chemotherapy
C.
Koch aseptic surgery
D.
Pasteur proof of biogenesis
Need help with your exam preparation?
Get Answers to this exam for $6 USD.
Get Answers to all exams in [ Microbiology 020 - General Microbiology ] course for $25 USD.
Existing Quiz Clients Login here