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Microbiology Class Question and answers verified to pass
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Microbiology Class Question and answers verified to pass Describe the Historical experiment that invalidates theory of 'spontaneous generation? - correct answer Experiment 1: Air is filled with microorganisms Proved by: filtered air w/ cotton plug and identify microbes in cotton as same ones ...

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  • August 11, 2024
  • 8
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • Microbiology
  • Microbiology

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Microbiology Class
Describe the Historical experiment that invalidates theory of 'spontaneous
generation? - correct answer ✔Experiment 1: Air is filled with
microorganisms
Proved by:
filtered air w/ cotton plug and
identify microbes in cotton as same ones contaminating infusions.
Experiment 2: Sterile infusions remain sterile
Proved by:
Made swan-necked flask
Flask stays sterile, even if left open
Experiments done by Pasteur


Why do we study bacteria? - correct answer ✔all living things can be
classified in one of three domains being Bacteria, Archaea, and Eurarya.
Used to study our DNA of humans.


Describe the Characteristics of viruses? - correct answer ✔Non-living
elements
Called agents
only a few molecules found in living cells
contain protein coat surrounding nucleic acid
termed obligate intracellular parasites
All forms of life can be infected by viruses
Viruses frequently kill host cells but can live with it.

, Describe the Differences between prokaryotes and Eukaryotes? - correct
answer ✔Prokaryotes=Bacteria and Archaea
Both are single-celled organisms
Contain no membrane bound nucleus
pre nucleus.
Eukaryotes=Eucarya
May be single or multicellular
Organisms contain membrane bound nucleus
true nucleus


describe the Beneficial uses of bacteria? - correct answer ✔Food production
Fermentation of milk to produce numerous products
Bioremediation
Use organisms to degrade environmental waste
Degrade PCB's, DDT
Clean up oil spills
Treat radioactive waste


discuss the Distinguishing features of bacterial cell walls - correct answer
✔Rigid structure
Surrounds cytoplasmic membrane
Determines shape of bacteria
Holds cell together
Prevents cell from bursting
Unique chemical structure

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