Multiple choice

Which of the following is known as Pasteur effect?

  1. Disproving the doctrine of spontaneous generation

  2. Use of artificially weakened pathogens for immunization

  3. Production of alcohol in absence of oxygen by yeast

  4. Elimination of causative agent of pebrine disease
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C Correct answer
Explanation

Louis Pasteur introduced the terms aerobic and anaerobic in describing the growth of yeast at the expense of sugar in the presence or absence of oxygen. He observed that more alcohol was produced in the absence of oxygen when sugar is fermented, which is now termed the Pasteur effect.

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