NURSING EXAM QUESTIONS
MICROBIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Life can not spontaneously generate
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Air or “vital force” may be needed for spontaneous generation
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That spontaneous generation is true
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None of the above
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Detailed explanation-1: -Conclusion(s): There is no such life force in air, and organisms do not arise by spontaneous generation in this manner. To quote Louis Pasteur, “Life is a germ, and a germ is Life. Never will the doctrine of spontaneous generation recover from the mortal blow of this simple experiment."
Detailed explanation-2: -He concluded that maggots could only form when flies were allowed to lay eggs in the meat, and that the maggots were the offspring of flies, not the product of spontaneous generation.
Detailed explanation-3: -After prolonged incubation the swan necked flask remained free of life, whereas the control flask was teeming with microbial life. Thus, Pasteur succeeded in disproving the spontaneous generation theory because the swan neck of the flask allowed only air, and not the microbes.
Detailed explanation-4: -By sterilizing cultures and keeping them isolated from the open air, Pasteur found that contamination of the media only occurred upon exposure to the outside environment, showing that some element was needed to give rise to life. In other words, life does not arise spontaneously.