Microbiology: Temperature Effects on Microorganisms
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Questions and Answers

What did Pasteur discover about grape juice?

  • It could be pasteurized by gentle heating (correct)
  • It could be preserved by refrigeration
  • It could be sterilized by boiling
  • It could be frozen for long-term storage
  • Why is low-temperature treatment useful as a food preservative?

  • It kills all microorganisms instantly
  • It is a cheap and efficient method
  • It alters the flavor of the food
  • It slows down microbial growth and multiplication (correct)
  • What is the primary purpose of cooking food?

  • To change the texture of the food
  • To preserve the food for long-term storage
  • To make the food easier to digest and reduce microbial load (correct)
  • To add flavor to the food
  • What is the ideal temperature range for thermophilic microorganisms?

    <p>Between 45°C and 80°C</p> Signup and view all the answers

    What is the optimal growth temperature for mesophilic microorganisms?

    <p>Exactly 37°C</p> Signup and view all the answers

    What type of microorganisms grow at low temperatures?

    <p>Psychrophiles</p> Signup and view all the answers

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