Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
|
What are some of microbes' essential functions in the biosphere?
|
Recycling
Cellulose metabolism Nitrogen Cycle Sulfur Cycle |
|
|
What key invention allowed the study of microbiology to begin?
|
The microscope
|
|
|
Who was Robert Hooke?
|
He discovered fruiting bodies on mold in 1665
|
|
|
Who was Antony van Leeuwenhoek?
|
The first person to see bacteria, using a 300X microscope in 1676
|
|
|
What is the 1st question that needed to be answered in order to begin the study of microbiology?
|
"Spontaneous generation", the hypothesis that living matter can arise from non-living matter.
|
|
|
Who was Francesco Redi?
|
He proved that maggots do not spontaneously spawn from meat. But did not address microbes.
|
|
|
What experiment was done at first to try and address the 1st Question of Microbiology's Origin?
|
Boiled infusions of plant/animal matter get turbid UNLESS boiled in a sealed flask.
|
|
|
What did people say was the problem with the first experiment done to address the 1st question of Microbiology's Origin?
|
They said that the flask was full of "bad air", as result of boiling.
|
|
|
How was the issue of "bad air" addressed in the first experiment done to address the 1st question of Microbiology's Origin?
|
They tried sealing the flask after boiling, and found that the result was contingent on the amount of time between boiling and sealing, and results were not reproducible.
|
|
|
Who finally nailed down the answer to the 1st Question of Microbiology's Origins, and how?
|
Pasteur. He used swan necked flasks and gun cotton to create broths that were exposed to air, but not microbes, after boiling.
|
|
|
Who was John Tyndall?
|
He developed discontinuous heating in response to the question of how much boiling was needed to sterilize a solution. He also discovered endospores, alongside Ferdinand Cohn
|
|
|
Who was Ferdinand Cohn?
|
He discovered endospores in conjunction with John Tyndall
|
|
|
What was the 2nd Question of Microbiology's Origins?
|
Is contagious disease really caused by microbes?
|
