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A pure culture contains
Select one:
a. only one identified species of microorganism.b. only bacteria.
c. microbes from a single
... [Show More] source.
d. a variety of species from the same genus.
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The correct answer is: only one identified species of microorganism.
Question 2
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Which activity is an example of biotechnology?
Select one:
a. Bacteria in the soil secreting an antibiotic to kill competitors
b. A microbiologist using the microscope to view bacteria
c. Egyptians using moldy bread on wounds
d. Escherichia coli producing human insulin
e. Public health officials monitoring diseases in a community
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The correct answer is: Escherichia coli producing human insulin
Question 3
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Select the statement that most accurately reflects the process of plant material digestion in
humans.
Select one:
a. It is a very efficient process the produces very little undigested material in feces.
b. It is a process that is dependent upon enzyme (cellulase) production by gut
microbiota.
c. It requires the action of enzymes called kinases.
d. It is linked to the digestion of glycogen.
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The correct answer is: It is a process that is dependent upon enzyme (cellulase) production
by gut microbiota.
Question 4
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A nutrient medium that has all of its chemical components identified and their precise
concentrations known and reproducible is termed ______.
Select one:
a. complexb. reducing
c. enriched
d. defined
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The correct answer is: defined
Question 5
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A scientist studying the sequence of nucleotides in the rRNA of a bacterial species is
working on
Select one:
a. determining evolutionary relatedness.
b. bioremediation.
c. recombinant DNA.
d. nomenclature.
e. determining if that species is the cause of a new disease [Show Less]