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

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.

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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 bacteriaO Mixture of gases in air and glass particles of the container