Microbiology Final Straighterline Exam Questions and Correct Answers Latest Update 2024
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Microbiology Fnal Straighterline
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Microbiology Fnal Straighterline
Microbiology Final Straighterline Exam Questions and Correct Answers Latest Update 2024
phylogeny - Answers The study of evolutionary relationships among organisms is called ______.
Last Universal Common Ancestor - Answers The three cell types discussed, eukaryotes, archaea, and bacteria, all der...
Microbiology Final Straighterline Exam Questions and Correct Answers Latest Update 2024
phylogeny - Answers The study of evolutionary relationships among organisms is called ______.
Last Universal Common Ancestor - Answers The three cell types discussed, eukaryotes, archaea, and
bacteria, all derived from ______.
always harmful to their host - Answers Organisms called parasites are ______.
Thermal hot springs warmed by heat from earth's interior - Answers Which of the following does not
indicate microbe involvement in energy and nutrient flow?
Electrons - Answers The subatomic particles that surround the nucleus are the ______.
respiratory disease - Answers The number one worldwide infectious diseases are ______.
saturated - Answers A fat is called _____ if all carbons of the fatty acid chain are single-bonded to 2
other carbons and 2 hydrogens.
lipid - Answers One technique for staining bacteria for viewing under the microscope is called the Gram
stain. In this technique, alcohol is used as a decolorizer because it degrades the outer membrane found
in some bacteria. What chemical component of the cell does alcohol affect?
95X - Answers If a microbiologist is studying a specimen at a total magnification of 950X, what is the
magnifying power of the objective lens if the ocular lens is 10X?
cell size of 0.5 to 2 microns - Answers NASA has published a list of criteria for identifying fossil bacteria in
samples from Mars, as part of a search for evidence of life. Which of the following is good evidence for
the presence of bacterial cells?
electron - Answers Which type of microscope achieves the greatest resolution and highest
magnification?
a solid medium - Answers Which of the following is produced by adding 1% to 5% agar to nutrient broth
that is then boiled and cooled?
Creutzfeldt-Jacob disease - Answers a spongiform encephalopathy of humans
amphitrichous - Answers The term that refers to flagella at both poles of the cell is ______.
saprobe - Answers In the condition called athlete's foot, the fungus Trichophyton consumes the keratin
protein found in hair, nails, and dead skin. Which of the following descriptors does not apply to
Trichophyton?
gram-negative - Answers During the Gram stain, the application of alcohol results in the decolorization
of ______ cells.
80s - Answers The size of a eukaryotic ribosome is ______
, Bacterial cells are typically between 1-10 μm and are blocked by the filter, whereas most viruses are
between 20 and 200 nm and therefore pass through. - Answers Sterilizing filters have a pore size of 0.22
μm. Which of the following statements is true?
icosahedral - Answers One of the principal viral capsid shapes is a 20-sided figure with 12 evenly spaced
corners referred to as a/an _____ capsid.
fecal oral - Answers Amoebic dysentery is most commonly contracted through
lysogeny - Answers the viral genome inserting into bacterial host chromosome
envelope - Answers Which of the following is not associated with every virus?
palisade - Answers When bacilli in a chain fold back upon each other like a hinge, this cellular
arrangement is termed a ______.
histones - Answers proteins associated with DNA in the nucleus.
tropisms - Answers Viral tissue specificities are called ______.
lophotrichous - Answers the term that refers to the presence of a tuft of flagella emerging from a single
site is ______.
mutualistic - Answers E. coli bacteria normally live in the human gut and produce vitamin K that the
body uses. This is best termed a ______ relationship.
mutualistic - Answers Termites are insects that require the protozoan Trichonympha in their gut to
synthesize the enzyme cellulase to degrade the cellulose in wood. The protozoan uses the end products
of the cellulose breakdown (glucose). This is a(n) ______ relationship.
lag phase - Answers The phase of the bacterial growth curve in which newly inoculated cells are
adjusting to their new environment, metabolizing but not growing at an exponential rate, is the ______.
hypotonic - Answers The cell wall will help prevent the cell from bursting in ______ conditions.
photoheterotroph - Answers This microbe is photosynthetic, but in the absence of light it can use
organic compounds as an energy source. Its carbon source is an organic compound. The appropriate
classification for this organism would be ______.
thermoduric microbe - Answers A microorganism that has an optimum growth temperature of 37°C, but
can survive short exposure to high temperatures is called a(n) ______.
Noncompetitive inhibition - Answers the end product binding to enzyme in noncompetitive site
catalysts for RNA splicing - Answers Ribozymes are ______.
coenzymes - Answers Most electron carriers are ______.
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