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Microbiology Test Questions and Answers 100% Accurate
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Microbiology Test Questions
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Microbiology Test QuestionsD - answer Which of the following is a eukaryotic domain in the three-domain system?
A. Archaea
B. Fungi
C. Bacteria
D. Eukarya
A - answer Who was the first to observe microorganisms with a microscope?
A. van Leeuwenhoek
B. Hooke
C. Koch
D. Pasteur
E. None of the above
B - answer These are the primary molecules making up membranes in cells:
A. Proteins
B. Phospholipids
C. Nucleic acids
D. Carbohydrates
E. None of the above
A - answerAerobic respiration differs from anaerobic respiration in which of the following
respects?
A. The final electron acceptors are different
B. Aerobic respiration creates fewer molecules of ATP
C. ANaerobic respiration includes glycolysis
D. Aerobic respiration requires the electron transport chain
B - answerWhich of the following has to consume carbohydrates for both carbon and
energy?
A. Photoautotroph
B. Chemoheterotroph
C. Chemoautotroph
D. Photoheterotroph
B - answersalts and sugars work to preserve foods by creating a
A. depletion of nutrients
B. hypertonic environment
C. hypotonic environment
D. lower pH
D - answerThe term facultative anaerobe refers to an organism
,A. is killed by oxygen
B. doesnt use oxygen but tolerates it
C. requires less oxygen than is present in air
D. can use oxygen or can grow without oxygen
C - answerwhich group of the following bacterial growth types and temperatures is
mismatched?
A. Psychrotroph- optimal growth 22C
B. Psychrophile- optimal growth 12C
C. Thermophile- optimal growth 37C
D. Hyperthermophile- optimal growth 95C
A - answerWhich group of microorganisms is most likely to spoil a freshwater trout
preserved with salt?
A. Halophiles
B. Psychrophiles
C. Anaerobes
D. Thermophiles
A - answerWhich of the following is a good method to sterilize the interior of dense
materials without using high heat?
A. ionizing radiation
B. Pasteurization
C. autoclave
D. none of the above
B - answerOne important ecosystem function performed by microorganisms (such as
algae and cyanobacteria) is the primary production of biomass through the metabolic
process of
A. Anaerobic respiration
B. Photosynthesis
C. Aerobic respiration
D. fermentation
B - answerThe bacteria that are typically present and on the surface of the human body,
and which are typically harmless or even helpful to humans are called the "________"
microbiota
A. endemic
B. normal
C. symptomatic
D. pathogenic
D - answerWHat does the scientific debate about spontaneous generation vs.
biogenesis tell us about the process of science?
A. science is composed of theories based on personal beliefs
B. none of the above
, C. Science is simply the collection of facts about nature over time
D. Science is the process of refining ideas through vigorous debate and the challenging
of old ideas with new data collection
A - answerWhich of the following bacterial genus names means "string of rod-shaped
cells"
A. Streptobacillus
B. Streptococcus
C. Lactobacillus
D. Staphylobacillus
D - answerRegarding pasteurs experiments with the S-neck flask, which of the following
statements is true?
A. The liquid did not contain food for microbes
B. The results supported the theory of spontaneous generation, not biogenesis
C. The liquid was not boiled to kill the microbes
D. The S-flask allowed air to enter the flask
D - answerwhose work began the "golden age of microbiology" and included the
refinement of aseptic technique?
A. Hooke
B. van Leeuwenhoek
C. Koch
D. Pasteur
E. None of the above
B - answerA single celled, eukaryotic, motile organism that ingests its food and has no
cell wall is a
A. Bacterium
B. protozoan
C. Alga
D. fungus
E. Virus
A - answera prokaryote that lacks peptidoglycan in its cell walls and typically lives in
extreme environments is called a
A. Archaean
B. protozoan
C. Bacterium
D. ALga
E. Fungus
B - answerWhat is the typical diameter of bacterial cells?
A. 1000-10,000 microns
B. 0.2-8 microns
C. 10-100 microns
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