Spontaneous Generation - famous labs

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Presentation transcript:

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

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

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

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

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