NCERT - 8 - Science :: Microorganisms: Friend and Foe

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[Contributor - Anu Nived]

Objective: To teach the students about microoraganisms and how they are helpful and harmful to us

Subtopics to be covered:

- Food preservation

- Nitrogen fixation and nitrogen cycle

Learning Outcome:

- Students know about various useful and harmful microbes

- They know how viruses are different from other microbes

- They know the difference between anti bodies and anti biotics

[Contributor - Kripa S]

http://epathshala.nic.in/wp-content/doc/book/flipbook/ClassVIIIFlipbook/0855-Vigyan/Chapter-2/index.html (NCERT Hindi Medium)

http://epathshala.nic.in/wp-content/doc/book/flipbook/ClassVIIIFlipbook/0854-Science/Chapter-2/index.html (NCERT English Medium)

https://drive.google.com/open?id=0BzNF2YyqQxJ-bTVESG9HLUFOYTg (JEPC Board) (Hindi Medium)

[Contributor - Kripa S, Neelam Singh]

(Source - Bodhaguru)

https://www.youtube.com/watch?v=bY5PLLHxpbs (Hindi - Good and Bad microbes)

(Source - makemegenius)

https://www.youtube.com/watch?v=ZaFVfHftzpI (Hindi - Nitrogen Fixation and nitrogen cycle)

[Contributor - Anu Nived]

http://p6cdn4static.sharpschool.com/UserFiles/Servers/Server_71522/Image/Migration/dsc_0129.jpg (Food preservation - drying)

https://mypantryshelf.files.wordpress.com/2011/02/036.jpg (Salting)

http://www.tasteofsouthern.com/wp-content/uploads/2012/05/14_Freezing-Strawberries_sugar-to-coat.jpg (adding sugar)

http://www.practicalprimitive.com/images/salsa.jpg (adding oil and vinegar)

https://www.ag.ndsu.edu/cpr/images/07-02-15/plsc-kandel-1-soybean-nodulation.png (nitrogen fixation)

[Contributor - Arshea Bimal]

1. Take two pots and fill each pot half with soil. Mark them A and B. Put plant waste in pot A and things like polythene bags, empty glass bottles and broken plastic toys in pot B. Put the pots aside. Observe them after 3-4 weeks.

2. https://www.youtube.com/watch?v=4KG645qrpw8 (inflatable lungs)

[Contributor - Tejashri Khadilkar]

https://drive.google.com/open?id=0BzNF2YyqQxJ-Zml6WjFtVGlVc0U

[Contributor - Fathima Nazar]

Term	Transliterated Term	Translated Term
Algae	अलगे	शैवाल
Antibiotics	आंटीबायोटिक्स	प्रतिजैविक
Antibodies	आंटीबोडीज़	प्रतिरक्षी
Bacteria	बैक्टीरिया	जीवाणु
Carrier	कारियर	वाहक
Communicable Diseases	कम्युनिकेबल डिसीसेस	संक्रामक रोग
Fermentation	फेरमेंटशन	किण्वन
Fungi	फंजई	कवक
Lactobacillus	लैक्टोबैसिलस	णु जो कार्बोहाइड्रेट के किण्वन से लैक्टिक एसिड पैदा करता है।
Microorganisms	माइक्रो ऑर्गैनिसम	सूक्ष्मजीव
Nitrogen Cycle	नइट्रजन साइकिल	नाइट्रोजन चक्र
Nitrogen Fixation	नइट्रजन फिक्सेशन	नाइट्रोजन स्थिरीकरण
Pasteurization	पॉस्चराइज़ेशन	पास्चरीकरण
Pathogen	पाथजन	रोगज़नक़
Preservation	प्रिज़र्वेशन	परिरक्षण
Protozoa	प्रोटोज़ोआ	एक कण जीव, एककोषीय प्रजीव
Rhizobium	राइज़ोबियम	एक नाइट्रोजन फिक्सिंग जीवाणु
Vaccine	वाक्सिन	टीका
Virus	वायरस	विषाणु
Yeast	यीस्ट	ख़मीर

[Contributor - Tejashri Khadilkar]

https://drive.google.com/open?id=0BzNF2YyqQxJ-bEg0b0UwMFdFWFE

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