1. Spontaneous Generation - famous labs
As performed by:
Redi
Spallanzani
Pasteur
* Note: If the individual images are not visible for you, I did a screen capture
of each slide and inserted them after slide 4

2. Francesco Redi (Italian Physician)
Used beef (from a cow)
Controls
Jars, type of meat,
location, time, and
temperature
Manipulated Variable
Gauze covering
Responding Variables
Whether maggots
appear
Maggots appear
Maggots do not appear

3. Lazzaro Spallanzani (Italian Scholar)
Used beef gravy
Controls
flasks, type of gravy,
location, time, and
temperature
Manipulated Variable
Sealed flask
Responding Variables
Whether
microorganisms
appear
Microorganisms appear
Microorganisms do not appear

4. Louis Pasteur (French Scientist)
Manipulated Variable
_____________
Used chicken broth (liquid)
Responding Variables
_________________
Controls
_______________
Microorganisms? Yes or No?