Which of the following variables did Pasteur change in his experiment to test the hypothesis of spontaneous generation? View Available Hint(s) ? Hint 1. Think about how the control and experimental groups differed in this experiment. The broth used in each flask The shape of the flask The length of time that the flasks were allowed to sit before being sampled for organisms The length of time that the broth was boiled Submit Request Answer
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Step 1: Pasteur changed the length of time that the broth was boiled in his experiment to test the hypothesis of spontaneous generation. Show more…
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In Pasteur's famous experiment to disprove spontaneous generation, select the answer that would have led his experiment to fail to disprove spontaneous generation. A.) He filled the flask with sterile water. B.) He sealed his flask shut before sterilizing it. C.) Instead of allowing the nutrient broth to touch dirt in the neck of the flask, he inserted a grain of rice into the broth. D.) A & B E.) All of the above changes would still lead to results that could have disproved spontaneous generation.
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Pasteur's experiments and similar ones that followed convinced most of the people that spontaneous generation of life did not happen because (a) Pasteur was extremely meticulous. (b) Pasteur did not boil his flask for a long time. (c) Pasteur used very fine mesh screens to cover his flask. (d) Pasteur's swan-necked flasks ruled out the objection that spoiled air could have contaminated his experiments.
Describe Pasteur's experiments to refute the hypothesis of spontaneous generation, the results, and how the results refuted the hypothesis.
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