MHSB - 8 - Science :: The structure of a cell and micro-organisms

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MSCERT-Science-Grade 8

[edit]

[Contributor - Anu Nived]

Objective: To introduce the concept of cell and cell structure

Subtopics to be covered:

  1. Classification of cells
  2. Difference between plant and animal cells
  3. Micro organisms

Learning Outcome:

  1. Students know that cell is the basic constituent of an organism
  2. They know how plant cells are different from animal cells
  3. They know that some micro organisms are useful while some are harmful

[Contributor - Kripa S]


https://www.youtube.com/watch?v=nR-lsNDVhcY (animal cell -English)

https://www.youtube.com/watch?v=wS5jUgDVAqA (Structure of cell - Marathi)

https://www.youtube.com/watch?v=GJMtqZYejbI (Cell - Marathi)


[Contributor - Kripa S]


Boil a hen’s egg. Remove the shell. What do you observe? A white material surrounds the yellow part. White material is albumin which solidifies on boiling. The yellow part is yolk. It is part of the single cell. You can observe this single cell without any magnifying device.

Note: This activity can be done by students at home. Alternatively either the Class Assistant or few students can get boiled eggs to the school to observe this


[Contributor - Shahnawaz Pathan]

Term Transliterated Term Translated Term
Honeycomb हनीकोंब मधमाशांची पोळे
Compartment कंपार्टमेंट कप्पा
Cytology सायटोलोजी पेशीशास्त्र
Magnify मॅग्निफाय वर्धन
Thin थिन पातळ
Flexible फ्लेक्सिबल लवचीक
Regulate रेग्युलेट नियंत्रण
Maintain मेंटेन निश्चित
Substance सबस्टन्स पदार्थ
Components कंपोनेंट्स घटक
Porous पोरस सच्छिद्र
Gene जीन जनुक
Division डिविजन विभाजन
Soluble सोल्युबल विरघळणारे
Semi fluid सेमी फ्लूईड अर्ध प्रवाही
Organic ओर्गेनिक कार्बनी
Inorganic इन्ओर्गेनिक अकार्बनी
Tubular ट्युबुलर लांबट गोल
Power house पावर हाऊस ऊर्जा केंद्र
Empty space एम्पटी स्पेस पोकळी
Chlorophyll क्लोरोफिल हरितद्रव्य
Countless काउंटलेस अनंत
Beneficial बेनिफिशिअल उपकारक
Harmful हार्मफुल उपद्रवी
Nodules नोड्यूल्स गाठी
Fertile फर्टायल सुपीक
Decompose डिकंपोज विघटन
Poisonous पोइजनस विषारी
Foodstuffs फूड स्टफ खाद्यपदार्थ
Toxic टॉक्सिक विषारी
Wet वेट ओले
Damp डँप दमट
Parasite पॅरासाइट परपोषी
Antibiotic अँटिबायटिक प्रतिजैविक
Fermentation फर्मेंटेशन किण्वन
Unpalatable अनपॅलेटेबल नापसंत
Chronic क्रोनिक कायमस्वरुपी
Constituent कॉन्स्टिट्युएंट घटक
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