microbiology final straighterline
Exam/147 Questions and Answers
phylogeny - -The study of evolutionary relationships among organisms is
called ______.
-Last Universal Common Ancestor - -The three cell types discussed,
eukaryotes, archaea, and bacteria, all derived from ______.
-always harmful to their host - -Organisms called parasites are ______.
-Thermal hot springs warmed by heat from earth's interior - -Which of the
following does not indicate microbe involvement in energy and nutrient flow?
-Electrons - -The subatomic particles that surround the nucleus are the
______.
-respiratory disease - -The number one worldwide infectious diseases are
______.
-saturated - -A fat is called _____ if all carbons of the fatty acid chain are
single-bonded to 2 other carbons and 2 hydrogens.
-lipid - -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 - -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 - -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 - -Which type of microscope achieves the greatest resolution and
highest magnification?
-a solid medium - -Which of the following is produced by adding 1% to 5%
agar to nutrient broth that is then boiled and cooled?
-Creutzfeldt-Jacob disease - -a spongiform encephalopathy of humans
, -amphitrichous - -The term that refers to flagella at both poles of the cell is
______.
-saprobe - -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 - -During the Gram stain, the application of alcohol results
in the decolorization of ______ cells.
-80s - -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. - -Sterilizing filters have a pore size of 0.22 μm. Which of the
following statements is true?
-icosahedral - -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 - -Amoebic dysentery is most commonly contracted through
-lysogeny - -the viral genome inserting into bacterial host chromosome
-envelope - -Which of the following is not associated with every virus?
-palisade - -When bacilli in a chain fold back upon each other like a hinge,
this cellular arrangement is termed a ______.
-histones - -proteins associated with DNA in the nucleus.
-tropisms - -Viral tissue specificities are called ______.
-lophotrichous - -the term that refers to the presence of a tuft of flagella
emerging from a single site is ______.
-mutualistic - -E. coli bacteria normally live in the human gut and produce
vitamin K that the body uses. This is best termed a ______ relationship.
-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.
Exam/147 Questions and Answers
phylogeny - -The study of evolutionary relationships among organisms is
called ______.
-Last Universal Common Ancestor - -The three cell types discussed,
eukaryotes, archaea, and bacteria, all derived from ______.
-always harmful to their host - -Organisms called parasites are ______.
-Thermal hot springs warmed by heat from earth's interior - -Which of the
following does not indicate microbe involvement in energy and nutrient flow?
-Electrons - -The subatomic particles that surround the nucleus are the
______.
-respiratory disease - -The number one worldwide infectious diseases are
______.
-saturated - -A fat is called _____ if all carbons of the fatty acid chain are
single-bonded to 2 other carbons and 2 hydrogens.
-lipid - -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 - -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 - -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 - -Which type of microscope achieves the greatest resolution and
highest magnification?
-a solid medium - -Which of the following is produced by adding 1% to 5%
agar to nutrient broth that is then boiled and cooled?
-Creutzfeldt-Jacob disease - -a spongiform encephalopathy of humans
, -amphitrichous - -The term that refers to flagella at both poles of the cell is
______.
-saprobe - -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 - -During the Gram stain, the application of alcohol results
in the decolorization of ______ cells.
-80s - -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. - -Sterilizing filters have a pore size of 0.22 μm. Which of the
following statements is true?
-icosahedral - -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 - -Amoebic dysentery is most commonly contracted through
-lysogeny - -the viral genome inserting into bacterial host chromosome
-envelope - -Which of the following is not associated with every virus?
-palisade - -When bacilli in a chain fold back upon each other like a hinge,
this cellular arrangement is termed a ______.
-histones - -proteins associated with DNA in the nucleus.
-tropisms - -Viral tissue specificities are called ______.
-lophotrichous - -the term that refers to the presence of a tuft of flagella
emerging from a single site is ______.
-mutualistic - -E. coli bacteria normally live in the human gut and produce
vitamin K that the body uses. This is best termed a ______ relationship.
-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.
