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A scientist observed the formation of bacteria in the chicken broth that was first heated and then put in a sealed flask.
What most likely formed the bacteria?
O Heat that created a vital force to form bacteria
O Mixture of gases in air and glass particles of the container



Answer :

GinnyAnswer

Final answer:

Louis Pasteur's swan-neck experiment disproved spontaneous generation and demonstrated the role of airborne microorganisms in bacterial growth.


Explanation:

Pasteur's Swan-Neck Experiment

  • Louis Pasteur designed a flask with a swan-neck to prevent airborne microorganisms from contaminating the nutrient broth while allowing O₂ to enter.
  • The experiment showed that the introduction of microorganisms from the air, not heat, led to bacterial growth in the broth, disproving the theory of spontaneous generation.
  • This design highlighted the importance of controlling the entry of microbes in studying biogenesis and refuting misconceptions about the origin of life.

Learn more about Louis Pasteur's swan-neck experiment disproving spontaneous generation theory of microorganisms here:

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