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Until the late 1800's disease the basis for infection was that it spread by miasma or air
contaminated poisonous vapors... Robert Koch.
Which philosophical view is represented in the passage? - ✔✔Thomas Kuhn, paradigm
switch
What is Koch's hypothesis? - ✔✔If the healthy animals exposed to the bacteria
developed the disease, then the bacteria could be the cause of the disease.
After Koch completed his experiments, what would the next step in the scientific
method be? - ✔✔communicate their findings
What kind of control does Koch need for his experiment? - ✔✔Healthy animals injected
with saline solution
Consider the following statement: The use of animals in Koch's work was ethical
because through his work, Koch was able to help understand how human disease may
spread - ✔✔Utilitarian
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, In lab, when you are done working with your Petri dishes of bacteria, where are they
disposed and why? - ✔✔Large biohazardous waste bag; it is large enough to hold many
items and it is autoclaved to kill all organisms present
Why is it important to wear long pants and closed-toed shoes in lab? - ✔✔To cover your
legs and feet in case something sharp is dropped or liquids are spilled
You were cleaning up in lab and had just removed your goggles to leave, when there
was an accident spill and a chemical was splashed in your eyes. What is the first thing
you should do? - ✔✔Tell the professor and move towards the eye wash station; if you
are wearing contact lenses, remove them.
Where is the eye wash station in PS 101? - ✔✔At the sink in the back of the room
Why is it important to wash your hands before leaving lab? - ✔✔To reduce the spread
of the bacteria that you cultured and used in experiments.
What is the overall goal of the laboratory class this semester? - ✔✔to identify novel
antibiotics
After collecting your soil sample, you perform a serial dilution prior to plating your
samples. The dilution scheme is diagrammed below. What is the dilution factor of tube
D? - ✔✔10^-5
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