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BIOL 2320 Microbiology Exam 2 A questions well answered
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BIOL 2320 Microbiology Exam 2 A questions well answered
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BIOL 2320 Microbiology Exam 2 AA microorganism grows in the lab on medium containing mineral salts but no organic compounds. The
organism is likely to be a(n) - correct answer ✔✔Autotroph
A(n)______ organism require(s) oxygen for growth. - correct answer ✔✔obligate aerobic
human pathogens are classified as - correct answer ✔✔mesophiles
which of the following organisms would be most likely to contaminate a jar of pickles - correct answer
✔✔an acidophile
A fastidious organism might be grown on which of the following types of media - correct answer
✔✔enriched media
Joan wants to discover a microbe capable of degrading an environmental contaminant. Which of the
following culturing methods would be most effective for isolation of such an organism. - correct answer
✔✔enrichment culture
The events of binary fission are - correct answer ✔✔1.DNA is replicated
2. cell doubles in size
3. Cell forms a septum
4.Cell separates from its offspring
MacConkey agar plates represent ________ medium. - correct answer ✔✔both a differential and a
selective
The_______ of a population is the time it takes for the cells to double in number. - correct answer
✔✔generation time
, The use of salt and sugar in preserving various types of foods is an application of which of the following
concepts? - correct answer ✔✔osmotic pressure
A clinical sample labeled as "sputum" was collected from - correct answer ✔✔tissue
The method of obtaining isolated cultures that utilizes surface area to physically dilute specimens is
called - correct answer ✔✔the streak-plate technique
Blood agar plates are an example of ________ medium. - correct answer ✔✔differential
Creating conditions in the laboratory that promote the growth of some microbes while inhibiting the
growth of others is called - correct answer ✔✔selective enrichment culturing
a microorganism found living under conditions of high_____ is a barophile - correct answer
✔✔hydrostatic pressure
nucleic acid structure are - correct answer ✔✔polymers of nucleotides
the bacterial chromosome is - correct answer ✔✔both circular and found in a nucleoid
Translation involves - correct answer ✔✔switching from the nucleotide "language" to the amino acid
"language"
mRNA, tRNA, rRNA
semiconservative DNA replication means that - correct answer ✔✔Each daughter DNA molecule is
composed of one original strand and one new strand
That each daughter DNA strand contains one strand from the parent and one that is newly synthesized.
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