STRAIGHTERLINER MICROBIOLOGY 2026 | NEWEST VERSION 2026
1. The
study of evolutionary relationships among organisms is called .:
phy- logeny
2. The three cell types discussed, eukaryotes, archaea, and
bacteria, all derived from .: Last Universal Common Ancestor
3. Organisms called parasites are .:
always harmful to their host
4. Which of the following does not indicate microbe involvement in
energy and nutrient flow?: Thermal hot springs warmed by heat from earth's interior
5. The
subatomic particles that surround the nucleus are the .: Electrons
6. The number one
worldwide infectious diseases are .: respiratory disease
7. A fat is called if all carbons of the fatty acid
chain are single-bonded to 2 other carbons and 2 hydrogens.:
saturated
8. One technique for staining bacteria for viewing under the
microscope is called the Gram stain. In this technique, alcohol is
used as a decolorizer be- cause it degrades the outer membrane
found in some bacteria. What chemical component of the cell does
alcohol affect?: lipid
9. 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?: 95X
10. 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?: cell size of 0.5 to 2 microns
11. Which type of microscope achieves the greatest
resolution and highest magnification?: electron
12. Which of the following is produced by adding 1% to 5% agar to
nutrient broth that is then boiled and cooled?: a solid medium
13. a spongiform encephalopathy of humans: Creutzfeldt-Jacob disease
,14. The term
that refers to flagella at both poles of the cell is .: amphitrichous
15. 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?: saprobe
16. During the Gram stain, the application of alcohol results in
the decolorization of cells.: gram-negative
,17. The size of a eukaryotic
ribosome is : 80s
18. Sterilizing filters have a pore size of 0.22 μm. Which of the
following state- ments is true?: 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.
19. One of the principal viral capsid
shapes is a 20-sided figure with 12 evenly spaced corners referred
to as a/an capsid.: icosahedral
20. Amoebic dysentery is most commonly contracted through: fecal
oral
21. the viral genome inserting into bacterial host chromosome:
lysogeny
22. Which of the following is not associated with every virus?:
envelope
23. When bacilli in a chain fold back upon
each other like a hinge, this cellular arrangement is termed a .:
palisade
24. proteins associated with DNA in the nucleus.: histones
25. Viral tissue specificities are called
.: tropisms
26. the term that refers to the presence of a tuft of
flagella emerging from a single site is .: lophotrichous
27. E. coli bacteria normally live in the
human gut and produce vitamin K that the body uses. This is best
termed a relationship.: mutualistic
28. 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.:
mutualistic
29. 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 .: lag phase
30. The cell wall
will help prevent the cell from bursting in conditions.:
hy- potonic
31. 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 .:
photoheterotroph
1. The
study of evolutionary relationships among organisms is called .:
phy- logeny
2. The three cell types discussed, eukaryotes, archaea, and
bacteria, all derived from .: Last Universal Common Ancestor
3. Organisms called parasites are .:
always harmful to their host
4. Which of the following does not indicate microbe involvement in
energy and nutrient flow?: Thermal hot springs warmed by heat from earth's interior
5. The
subatomic particles that surround the nucleus are the .: Electrons
6. The number one
worldwide infectious diseases are .: respiratory disease
7. A fat is called if all carbons of the fatty acid
chain are single-bonded to 2 other carbons and 2 hydrogens.:
saturated
8. One technique for staining bacteria for viewing under the
microscope is called the Gram stain. In this technique, alcohol is
used as a decolorizer be- cause it degrades the outer membrane
found in some bacteria. What chemical component of the cell does
alcohol affect?: lipid
9. 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?: 95X
10. 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?: cell size of 0.5 to 2 microns
11. Which type of microscope achieves the greatest
resolution and highest magnification?: electron
12. Which of the following is produced by adding 1% to 5% agar to
nutrient broth that is then boiled and cooled?: a solid medium
13. a spongiform encephalopathy of humans: Creutzfeldt-Jacob disease
,14. The term
that refers to flagella at both poles of the cell is .: amphitrichous
15. 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?: saprobe
16. During the Gram stain, the application of alcohol results in
the decolorization of cells.: gram-negative
,17. The size of a eukaryotic
ribosome is : 80s
18. Sterilizing filters have a pore size of 0.22 μm. Which of the
following state- ments is true?: 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.
19. One of the principal viral capsid
shapes is a 20-sided figure with 12 evenly spaced corners referred
to as a/an capsid.: icosahedral
20. Amoebic dysentery is most commonly contracted through: fecal
oral
21. the viral genome inserting into bacterial host chromosome:
lysogeny
22. Which of the following is not associated with every virus?:
envelope
23. When bacilli in a chain fold back upon
each other like a hinge, this cellular arrangement is termed a .:
palisade
24. proteins associated with DNA in the nucleus.: histones
25. Viral tissue specificities are called
.: tropisms
26. the term that refers to the presence of a tuft of
flagella emerging from a single site is .: lophotrichous
27. E. coli bacteria normally live in the
human gut and produce vitamin K that the body uses. This is best
termed a relationship.: mutualistic
28. 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.:
mutualistic
29. 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 .: lag phase
30. The cell wall
will help prevent the cell from bursting in conditions.:
hy- potonic
31. 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 .:
photoheterotroph
