microbiology final straighterline, Straighterline Micro 250 final prep
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microbiology final straighterline, Straighterline Micro 250 final prep/microbiology final straighterline, Straighterline Micro 250 final prep/microbiology final straighterline, Straighterline Micro 250 final prep
microbiology final straighterline,
Straighterline Micro 250 final prep
phylogeny - correct answer The study of evolutionary relationships among
organisms is called ______.
Last Universal Common Ancestor - correct answer The three cell types discussed,
eukaryotes, archaea, and bacteria, all derived from ______.
always harmful to their host - correct answer Organisms called parasites are
______.
Thermal hot springs warmed by heat from earth's interior - correct answer
Which of the following does not indicate microbe involvement in energy and
nutrient flow?
Electrons - correct answer The subatomic particles that surround the nucleus are
the ______.
respiratory disease - correct answer The number one worldwide infectious
diseases are ______.
saturated - correct answer A fat is called _____ if all carbons of the fatty acid
chain are single-bonded to 2 other carbons and 2 hydrogens.
lipid - correct answer 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 - correct answer 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 - correct answer 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 - correct answer Which type of microscope achieves the greatest
resolution and highest magnification?
,microbiology final straighterline,
Straighterline Micro 250 final prep
a solid medium - correct answer Which of the following is produced by adding
1% to 5% agar to nutrient broth that is then boiled and cooled?
Creutzfeldt-Jacob disease - correct answer a spongiform encephalopathy of
humans
amphitrichous - correct answer The term that refers to flagella at both poles of
the cell is ______.
saprobe - correct answer 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 - correct answer During the Gram stain, the application of alcohol
results in the decolorization of ______ cells.
80s - correct answer 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. -
correct answer Sterilizing filters have a pore size of 0.22 μm. Which of the
following statements is true?
icosahedral - correct answer 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 - correct answer Amoebic dysentery is most commonly contracted
through
lysogeny - correct answer the viral genome inserting into bacterial host
chromosome
envelope - correct answer Which of the following is not associated with every
virus?
palisade - correct answer When bacilli in a chain fold back upon each other like a
hinge, this cellular arrangement is termed a ______.
histones - correct answer proteins associated with DNA in the nucleus.
,microbiology final straighterline,
Straighterline Micro 250 final prep
tropisms - correct answer Viral tissue specificities are called ______.
lophotrichous - correct answer the term that refers to the presence of a tuft of
flagella emerging from a single site is ______.
mutualistic - correct answer E. coli bacteria normally live in the human gut and
produce vitamin K that the body uses. This is best termed a ______ relationship.
mutualistic - correct answer 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 - correct answer 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 - correct answer The cell wall will help prevent the cell from bursting
in ______ conditions.
photoheterotroph - correct answer 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 - correct answer 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 - correct answer the end product binding to enzyme in
noncompetitive site
catalysts for RNA splicing - correct answer Ribozymes are ______.
coenzymes - correct answer Most electron carriers are ______.
2 - correct answer what is the usual net production of ATP?
aerobic cellular respiration - correct answer Exergonic reactions occur during
, microbiology final straighterline,
Straighterline Micro 250 final prep
one phosphate, one nitrogenous base, and one sugar - correct answer Each
nucleotide is composed of
deletion and insertion - correct answer A frameshift is caused by ______
mutations.
genomics refers to the study of an organism's entire genome, whereas
proteomics is the study of expressed proteins - correct answer The fields of
genomics and proteomics differ in that
eukaryotes - correct answer endosymbiotic theory
adenine-thymine - correct answer Replication of DNA begins at a/an _______
rich area.
capsid - correct answer A/an _____ is the protein shell around the nucleic acid
core of a virus.
hyphae - correct answer The long, thread-like branching cells of molds are called
______.
the electron transport system - correct answer in which stage of aerobic
respiration is water produced?
generalized transduction - correct answer A bacteriophage transfers a random
fragment of DNA of the previous host to the current host. This is an example of
capsule - correct answer Which external structure protects bacteria from
phagocytosis?
DNA ligase - correct answer Okazaki fragments are attached to the growing end
of the lagging strand by _______.
taxonomy - correct answer Which scientific field is involved in the identification,
classification, and naming of organisms?
trace elements - correct answer Microorganisms require small quantities of
______ for enzyme function and maintenance of protein structure.
host glycoproteins - correct answer Viruses attach to their hosts via ______.
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