Microbes in Human Welfare
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Questions and Answers

Which of the following microbes are commonly referred to as lactic acid bacteria (LAB)?

  • Saccharomyces cerevisiae
  • Lactobacillus (correct)
  • Staphylococcus
  • Escherichia coli
  • What is produced as a result of the fermentation of milk by LAB?

    curd

    What beneficial role do LAB play in our stomachs?

    They check disease-causing microbes.

    The dough used for making dosa and idli is fermented by bacteria, resulting in the production of ______ gas.

    <p>CO2</p> Signup and view all the answers

    What type of yeast is used for fermenting bread dough?

    <p>Saccharomyces cerevisiae</p> Signup and view all the answers

    All microbes are harmful to humans.

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

    Name a traditional drink made by fermenting sap in southern India.

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

    Study Notes

    Microbes in Human Welfare

    • Microbes are essential components of biological systems on Earth.
    • They are found everywhere, including soil, water, air, and inside living organisms.
    • Microbes are diverse, including bacteria, fungi, protozoa, viruses, viroids, and prions.
    • Microbes are grown on nutrient media to form colonies, which are visible to the naked eye.
    • Microbes are useful in many ways and contribute to different aspects of human life.
    • For example, microbes play a role in the production of household products like curd and fermented foods.
    • Lactic acid bacteria (LAB) are responsible for converting milk into curd, contributing to its nutritional quality.
    • Yeast (Saccharomyces cerevisiae) plays a crucial role in the fermentation of bread dough.
    • Fermented products like dosa, idli, and toddy are produced using specific microbes.
    • The production of carbon dioxide (CO2) during fermentation is a result of microbial metabolic activity.
    • Microbes inhabit even extreme environments like thermal vents, deep in the soil, and under layers of snow.

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    Microbes in Human Welfare PDF

    Description

    Explore the vital roles that microbes play in human welfare, from food production to various industrial applications. This quiz covers diverse microorganisms, including bacteria and yeasts, and their contributions to everyday products like curd and fermented foods. Test your knowledge on how these tiny organisms significantly impact our lives and ecosystems.

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