How was disproving spontaneous generation associated with developing principles important to microbiology?
a. Pasteur's experiments with swan-necked flasks supported the concept that microbes in the air were responsible for contaminating nonliving matter.
b. Proving spontaneous generation confirmed the existence of microbes.
c. Spallanzani disproved spontaneous generation through his experiment, in which flasks of meat broth were boiled and then melted shut, preventing the passage of air altogether.
d. Needham disproved spontaneous generation through his experiments, in which boiled flasks of broth, when covered, became cloudy, teeming with microorganisms after a few days.
Answer: a. Pasteur's experiments with swan-necked flasks supported the concept that microbes in the air were responsible for contaminating nonliving matter.
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