1
StraighterLine Microbiology Final | Complete
Questions and Correct Answers | Updated for
2025 Term
1. Treatment for tetanus? - ANSWER If you have been vaccinated (DTaP)
before exposure:
2. If you have not been vaccinated: Tetanus immune globulin
3. What is the leading cause of blindness? - ANSWER Trachoma
4. What causes trachoma? - ANSWER Chlamydia
5. Varicella zoster aka - ANSWER Chicken pox
6. What bacteria causes cavities? - ANSWER Streptococcus mutans
7. Bacteria use - ANSWER CAPSULES
8. Where does transcription occur? - ANSWER The nucleus
9. Where does translation occur? - ANSWER The cytoplasm
10.What develops as a complication of strep throat? - ANSWER Rheumatic
fever
11.Rank the WBC's from most to least abundant - ANSWER Neutrophil
Lymphocyte
Monocyte
Eosinophil
Basophil
12.Neutrophil - ANSWER Phagocytic
13.Lymphocyte - ANSWER Specific immunity T-cells, B-cells & natural killer
cells
, 2
14.Monocyte - ANSWER Phagocytic as mature macrophages
15.Eosinophil - ANSWER Toxic to parasites
16.Basophils - ANSWER Produce histamines to combat allergic reactions
17.What are chemoheterotrophs? - ANSWER Organisms that get carbon from
organic material such as proteins, carbohydrates & lipids
18.The study of evolutionary relationships among organisms is called ______. -
ANSWER phylogeny
19.The three cell types discussed, eukaryotes, archaea, and bacteria, all derived
from ______. - ANSWER Last Universal Common Ancestor
20.Organisms called parasites are ______. - ANSWER always harmful to their
host
21.Which of the following does not indicate microbe involvement in energy and
nutrient flow? - ANSWER Thermal hot springs warmed by heat from earth's
interior
22.The subatomic particles that surround the nucleus are the ______. -
ANSWER Electrons
23.The number one worldwide infectious diseases are ______. - ANSWER
respiratory disease
24.A fat is called _____ if all carbons of the fatty acid chain are single-bonded
to 2 other carbons and 2 hydrogens. - ANSWER saturated
25.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? - ANSWER lipid
26.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?
- ANSWER 95X
, 3
27.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? - ANSWER
cell size of 0.5 to 2 microns
28.Which type of microscope achieves the greatest resolution and highest
magnification? - ANSWER electron
29.Which of the following is produced by adding 1% to 5% agar to nutrient
broth that is then boiled and cooled? - ANSWER a solid medium
30.a spongiform encephalopathy of humans - ANSWER Creutzfeldt-Jacob
disease
31.The term that refers to flagella at both poles of the cell is ______. -
ANSWER amphitrichous
32.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? - ANSWER saprobe
33.During the Gram stain, the application of alcohol results in the
decolorization of ______ cells. - ANSWER gram-negative
34.The size of a eukaryotic ribosome is ______ - ANSWER 80s
35.Sterilizing filters have a pore size of 0.22 μm. Which of the following
statements is true? - 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.
36.One of the principal viral capsid shapes is a 20-sided figure with 12 evenly
spaced corners referred to as a/an _____ capsid. - ANSWER icosahedral
37.Amoebic dysentery is most commonly contracted through - ANSWER fecal
oral
38.the viral genome inserting into bacterial host chromosome - ANSWER
lysogeny
, 4
39.Which of the following is not associated with every virus? - ANSWER
envelope
40.When bacilli in a chain fold back upon each other like a hinge, this cellular
arrangement is termed a ______. - ANSWER palisade
41.proteins associated with DNA in the nucleus. - ANSWER histones
42.Viral tissue specificities are called ______. - ANSWER tropisms
43.the term that refers to the presence of a tuft of flagella emerging from a
single site is ______. - ANSWER lophotrichous
44.E. coli bacteria normally live in the human gut and produce vitamin K that
the body uses. This is best termed a ______ relationship. - ANSWER
mutualistic
45.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. - ANSWER mutualistic
46.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 ______. - ANSWER lag phase
47.The cell wall will help prevent the cell from bursting in ______ conditions. -
ANSWER hypotonic
48.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 ______. -
ANSWER photoheterotroph
49.A microorganism that has an optimum growth temperature of 37°C, but can
survive short exposure to high temperatures is called a(n) ______. -
ANSWER thermoduric microbe
50.the end product binding to enzyme in noncompetitive site - ANSWER
Noncompetitive inhibition
StraighterLine Microbiology Final | Complete
Questions and Correct Answers | Updated for
2025 Term
1. Treatment for tetanus? - ANSWER If you have been vaccinated (DTaP)
before exposure:
2. If you have not been vaccinated: Tetanus immune globulin
3. What is the leading cause of blindness? - ANSWER Trachoma
4. What causes trachoma? - ANSWER Chlamydia
5. Varicella zoster aka - ANSWER Chicken pox
6. What bacteria causes cavities? - ANSWER Streptococcus mutans
7. Bacteria use - ANSWER CAPSULES
8. Where does transcription occur? - ANSWER The nucleus
9. Where does translation occur? - ANSWER The cytoplasm
10.What develops as a complication of strep throat? - ANSWER Rheumatic
fever
11.Rank the WBC's from most to least abundant - ANSWER Neutrophil
Lymphocyte
Monocyte
Eosinophil
Basophil
12.Neutrophil - ANSWER Phagocytic
13.Lymphocyte - ANSWER Specific immunity T-cells, B-cells & natural killer
cells
, 2
14.Monocyte - ANSWER Phagocytic as mature macrophages
15.Eosinophil - ANSWER Toxic to parasites
16.Basophils - ANSWER Produce histamines to combat allergic reactions
17.What are chemoheterotrophs? - ANSWER Organisms that get carbon from
organic material such as proteins, carbohydrates & lipids
18.The study of evolutionary relationships among organisms is called ______. -
ANSWER phylogeny
19.The three cell types discussed, eukaryotes, archaea, and bacteria, all derived
from ______. - ANSWER Last Universal Common Ancestor
20.Organisms called parasites are ______. - ANSWER always harmful to their
host
21.Which of the following does not indicate microbe involvement in energy and
nutrient flow? - ANSWER Thermal hot springs warmed by heat from earth's
interior
22.The subatomic particles that surround the nucleus are the ______. -
ANSWER Electrons
23.The number one worldwide infectious diseases are ______. - ANSWER
respiratory disease
24.A fat is called _____ if all carbons of the fatty acid chain are single-bonded
to 2 other carbons and 2 hydrogens. - ANSWER saturated
25.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? - ANSWER lipid
26.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?
- ANSWER 95X
, 3
27.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? - ANSWER
cell size of 0.5 to 2 microns
28.Which type of microscope achieves the greatest resolution and highest
magnification? - ANSWER electron
29.Which of the following is produced by adding 1% to 5% agar to nutrient
broth that is then boiled and cooled? - ANSWER a solid medium
30.a spongiform encephalopathy of humans - ANSWER Creutzfeldt-Jacob
disease
31.The term that refers to flagella at both poles of the cell is ______. -
ANSWER amphitrichous
32.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? - ANSWER saprobe
33.During the Gram stain, the application of alcohol results in the
decolorization of ______ cells. - ANSWER gram-negative
34.The size of a eukaryotic ribosome is ______ - ANSWER 80s
35.Sterilizing filters have a pore size of 0.22 μm. Which of the following
statements is true? - 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.
36.One of the principal viral capsid shapes is a 20-sided figure with 12 evenly
spaced corners referred to as a/an _____ capsid. - ANSWER icosahedral
37.Amoebic dysentery is most commonly contracted through - ANSWER fecal
oral
38.the viral genome inserting into bacterial host chromosome - ANSWER
lysogeny
, 4
39.Which of the following is not associated with every virus? - ANSWER
envelope
40.When bacilli in a chain fold back upon each other like a hinge, this cellular
arrangement is termed a ______. - ANSWER palisade
41.proteins associated with DNA in the nucleus. - ANSWER histones
42.Viral tissue specificities are called ______. - ANSWER tropisms
43.the term that refers to the presence of a tuft of flagella emerging from a
single site is ______. - ANSWER lophotrichous
44.E. coli bacteria normally live in the human gut and produce vitamin K that
the body uses. This is best termed a ______ relationship. - ANSWER
mutualistic
45.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. - ANSWER mutualistic
46.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 ______. - ANSWER lag phase
47.The cell wall will help prevent the cell from bursting in ______ conditions. -
ANSWER hypotonic
48.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 ______. -
ANSWER photoheterotroph
49.A microorganism that has an optimum growth temperature of 37°C, but can
survive short exposure to high temperatures is called a(n) ______. -
ANSWER thermoduric microbe
50.the end product binding to enzyme in noncompetitive site - ANSWER
Noncompetitive inhibition
