Concept explainers
To explain: The possibility of generation of novel life forms from a flask with boiled yeast broth, amino acids and essential inorganic salts , under two conditions: Flask with all the contents exposed to air and not exposed to air.
Introduction:
Aristotle formulated the doctrine for the Theory of Spontaneous regeneration which suggested that living forms arise from nonliving matter. This theory was challenged by several scientists including Francesco Redi, Louis Pasteur and John Tyndall. Louis Pasteur gave a major breakthrough with an experiment which nullified the theory with his famous swan neck flask. Microorganisms and their spores can be airborne, water borne and soil borne.
To explain: Redesigning the experiment to eliminate the possibility of contamination.
Introduction:
Aristotle formulated the doctrine for the Theory of Spontaneous regeneration which suggested that living forms arise from nonliving matter. This theory was challenged by several scientists including Francesco Redi, Louis Pasteur and John Tyndall. Louis Pasteur gave a major breakthrough with an experiment which nullified the theory with his famous swan neck flask. Microorganisms and their spores can be airborne, water borne and soil borne.
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Chapter 1 Solutions
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