microbiology final straighterline, final exam straighterline microbiology-300+ Q&As
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Course
Microbiology
Institution
Microbiology
microbiology final straighterline, final exam straighterline microbiology-300+ Q&As/microbiology final straighterline, final exam straighterline microbiology-300+ Q&As/microbiology final straighterline, final exam straighterline microbiology-300+ Q&As
microbiology final straighterline, final
exam straighterline microbiology
The study of evolutionary relationships among organisms is called ______. -
correct answer phylogeny
The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from
______. - correct answer Last Universal Common Ancestor
Organisms called parasites are ______. - correct answer always harmful to their
host
Which of the following does not indicate microbe involvement in energy and
nutrient flow? - correct answer Thermal hot springs warmed by heat from earth's
interior
The subatomic particles that surround the nucleus are the ______. - correct
answer Electrons
The number one worldwide infectious diseases are ______. - correct answer
respiratory disease
A fat is called _____ if all carbons of the fatty acid chain are single-bonded to 2
other carbons and 2 hydrogens. - correct answer saturated
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? - correct answer lipid
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? - correct
answer 95X
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? - correct answer cell size of 0.5 to 2
microns
Which type of microscope achieves the greatest resolution and highest
magnification? - correct answer electron
,microbiology final straighterline, final
exam straighterline microbiology
Which of the following is produced by adding 1% to 5% agar to nutrient broth that
is then boiled and cooled? - correct answer a solid medium
a spongiform encephalopathy of humans - correct answer Creutzfeldt-Jacob
disease
The term that refers to flagella at both poles of the cell is ______. - correct
answer amphitrichous
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? - correct answer saprobe
During the Gram stain, the application of alcohol results in the decolorization of
______ cells. - correct answer gram-negative
The size of a eukaryotic ribosome is ______ - correct answer 80s
Sterilizing filters have a pore size of 0.22 μm. Which of the following statements is
true? - correct answer 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.
One of the principal viral capsid shapes is a 20-sided figure with 12 evenly spaced
corners referred to as a/an _____ capsid. - correct answer icosahedral
Amoebic dysentery is most commonly contracted through - correct answer fecal
oral
the viral genome inserting into bacterial host chromosome - correct answer
lysogeny
Which of the following is not associated with every virus? - correct answer
envelope
When bacilli in a chain fold back upon each other like a hinge, this cellular
arrangement is termed a ______. - correct answer palisade
proteins associated with DNA in the nucleus. - correct answer histones
, microbiology final straighterline, final
exam straighterline microbiology
Viral tissue specificities are called ______. - correct answer tropisms
the term that refers to the presence of a tuft of flagella emerging from a single
site is ______. - correct answer lophotrichous
E. coli bacteria normally live in the human gut and produce vitamin K that the
body uses. This is best termed a ______ relationship. - correct answer mutualistic
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. - correct answer mutualistic
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 ______. - correct answer lag phase
The cell wall will help prevent the cell from bursting in ______ conditions. -
correct answer hypotonic
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 ______. - correct answer
photoheterotroph
A microorganism that has an optimum growth temperature of 37°C, but can
survive short exposure to high temperatures is called a(n) ______. - correct
answer thermoduric microbe
the end product binding to enzyme in noncompetitive site - correct answer
Noncompetitive inhibition
Ribozymes are ______. - correct answer catalysts for RNA splicing
Most electron carriers are ______. - correct answer coenzymes
what is the usual net production of ATP? - correct answer 2
Exergonic reactions occur during - correct answer aerobic cellular respiration
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