Grade 8 | Science | Microorganisms Friends and foe | Free Tutorial | CBSE | ICSE | State Board

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Microorganisms are classified as beneficial or harmful, with friendly ones like yeast and lactobacillus used in baking and producing vaccines, while harmful ones, called pathogens, cause diseases such as anthrax and food poisoning.

Insights

  • Friendly microorganisms such as yeast and lactobacillus play crucial roles in various processes like baking, curd production, and alcohol fermentation.
  • Pathogenic microorganisms, like anthrax and food poisoning bacteria, are harmful agents that cause diseases in humans, animals, and plants, emphasizing the importance of understanding and managing these foes for public health and safety.

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Recent questions

  • What are microorganisms?

    Microorganisms are tiny living organisms classified into beneficial and harmful groups.

  • How are friendly microorganisms utilized?

    Friendly microorganisms like yeast and lactobacillus are used in baking, making curd, producing alcohol, beer, and vaccines.

  • What are harmful microorganisms called?

    Harmful microorganisms, known as pathogens, cause diseases in humans, animals, and plants.

  • What are examples of harmful microorganisms?

    Examples of harmful microorganisms include anthrax, foot-and-mouth disease, and food poisoning bacteria.

  • How do microorganisms impact food preservation?

    Microorganisms play a role in food preservation methods, nitrogen fixation, and the nitrogen cycle.

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Summary

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Microorganisms: Friends and Foes

  • Microorganisms are classified into different groups, with some being beneficial (friends) and others harmful (foes).
  • The module aims to educate on defining microorganisms and their groups, understanding friendly microorganisms and their uses, powerful microorganisms, food preservation methods, nitrogen fixation, and the nitrogen cycle.
  • Useful microorganisms like yeast and lactobacillus are utilized in baking, making curd, and producing alcohol, beer, and vaccines.
  • Harmful microorganisms, known as pathogens, cause diseases in humans, animals, and plants, with examples like anthrax, foot-and-mouth disease, and food poisoning bacteria.
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