13 Where does life come from

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1-3Where does life come from?
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Spontaneous generation- The idea that living
things come from nonliving things.
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Louis Pasteur-French chemist that proved
spontaneous generation wrong.
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Biogenesis-The theory that living things only
come from living things.
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Timeline for origin of life1668-Francesco
Redi1745-John Needham1768-Lazzaro
Spallanzani1859-Louis Pasteur1924-Alexander
Oparin1953-Stanley Miller
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Redi Experiment-1 raw meat in jars.2
covered/uncovered3 no flies/fliesAgainst
Spontaneous Generation (S. G.)
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Needham1 heated broth in sealed flask.2
microorganisms grewfor S. G.
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Spallanzani-1 boiled broth sealed flask2 opened
became cloudysealed stayed clear.Against S. G.
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Pasteur-1 boiled broth in s-necked flask.2 only
became cloudy when tilted.Against S. G.
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Oparin1 hypothesized that energy from the sun
or lightening triggered a chemical reaction that
produced the needed materials for life to begin.
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Miller1 sent electricity through gasses
believed to be Earths early atmosphere. Produce
amino acids.