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Straighterline Microbiology Midterm Review Exam
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Straighterline Microbiology Midterm Review Exam
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Straighterline Microbiology MidtermReview Exam
Agar is a complex polysaccharide that comes from a/an ___________.
a. green plant
b. fungus
c. bacterium
d. algae
e. marine invertebrate - -d. algae
-Using microbes to detoxify a site contaminated with heavy metals is an
example of _________.
a. biotechnology
b. bioremediation
c. decomposition
d. immunology
e. epidemiology - -b. bioremediation
-The three physical forms of laboratory media are _____________.
a. solid, liquid, and gas
b. solid, semisolid, and liquid
c. a streak plate, a pour plate, and a broth
d. reducing, transport, and enumeration - -b. solid, semisolid, and liquid
-Which of the following is a traditional human use of microorganisms?
a. baking
b. treating water and sewage
c. mass-producing antibiotics
d. cleaning up oil spills - -a. baking bread
-Which of the following represents a synthesis reaction?
a. AB --> A + B
b. A + B --> AB
c. AB + XY --> AY +XB
d. AB + XY <--> AY + XB - -b. A + B --> AB
-Basic dyes are
a. attracted to the acidic surface of bacterial cells
,b. anionic
c. used in negative staining
d. repelled by cells
e. dyes such as India ink and nigrosin - -a. attracted to the acidic surface of
bacterial cells
-The type of microscopy in which you would observe brightly illuminated
specimens against a black background is __________
a. confocal
b. dark-field
c. phase-contrast
d. fluorescence
e. electron - -b. dark-field
-A reducing medium is used to culture _________ organisms.
a. fastidious
b. aerobic
c. anaerobic
d. pathogenic - -c. anaerobic
-In the cell cytoplasm, molecules of ATP are a ________
a. solute
b. solvent - -a. solute
-A diagram of the three domains (Bacteria, Archaea, Eukarya) proceeding
from the Last Universal Common Ancestor would show Archaea
a. as the original cells from which the others derived
b. branching off the domain Eukarya
c. branching off of the domain Bacteria - -b. branching off the domain
Eukarya
-In the experiments constructed by Pasteur to disprove spontaneous
generation, swan-necked flasks were used. Why was this shape of flask used
in this experiment.
a. the glass neck needed to be open to the air, yet constructed so that
bacteria would settle in the lowest part of the flask
b. these flask shapes were the easiest and cheapest to produce
c. the shape of the glass neck allowed the bacteria into the flask and then
into the media, but air could not enter
d. Because the glass necks were stretched out, the heat used to sterilize the
medium inside of the flask could not kill the bacteria in the neck - -a. the
, glass neck needed to be open to the air, yet constructed so that bacteria
would settle in the lowest part of the flask
-Atoms that gain or lose electrons become charged particles
called____________
a. cations
b. anions
c. ions
d. isotopes - -c. ions
-The three cell types discussed, eukaryotes, archaea, and bacteria, all
derived from
a. the last universal common ancestor
b. photosynthetic bacteria
c. archaea
cells
d. cells with a true necleaus - -a. the last universal common ancestor
-A nutrient medium that has all of its chemical components identified and
their precises contractions known and reproducable is termed_________
a. complex
b. reducing
c. enriched
d. defined - -d. defined
-What part of a phosphate comprises the hydrophobic tail?
a. fatty acids
b.glycerol
c. phosphates
d. alcohol
e. hydroxyl - -a. fatty acids
-Which of the following is not a pyrimidine?
a. uracil
b. adenine
c. thymine
d. Cytosine - -b. adenine
-Polar molecules are composed of covalently bonded
a. identical atoms
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