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*Self-Practice*

Std.10th -Science Part 2

Topic 2: *Life Process in Living Organisms Part-1*

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 *Today's exercise*:

Write the difference between Glycolysis and Citric acid cycle with respect to following points.

 1. Meaning-

 2. Phase number-

 3. Location-

 4. Other name for-

 5. Products-

 6. Significance-

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*Lord Krishn*: Hey Parth, you have gone into silent mode for the last two days, what is the problem?

*Arjun:* Hey Keshav, I was listening intently to what you described. But a lot of that information went  over my head.

*Lord Krishn:* What you are saying is true. I like your sincerity. I have tried to explain the secret of energy generation in brief within the limits of the textbook. This information will be useful to you in  future. It is important to understand the concept.  Mere recitation without understanding the basic concept is foolishness.

*Arjun:* Hey Dayanidhi, I feel your longing to teach, but what is the purpose of such a complicated and incomprehensible process in a textbook?

*Lord Krishn:* Hey Parth, I had told you at the beginning that our body is like a factory. The smallest unit in this factory is the cell. Each cell contains a few hundred to thousands of mitochondria.  Each of these mitochondria have turbine-like rotating devices (Krebs cycle).  Every breath we take  rotates these billions of turbines in the body. These turbines continuously provide the energy needed to keep the  body functioning by converting nutrients into energy-rich ATP.  ATP is the fuel of our mortal body. Without ATP you cannot eat, drink or even breathe. Without ATP, even the smallest piece of action in the  body would slow down and stop.

Parth, the human body is a wonderful device. Scientists are working day and night to discover the secrets of this body. Their tireless efforts have enriched human life today. The journey of these discoveries by scientists was  very tough but interesting. But for the fear of expansion, I will refrain from saying that. If possible, try to read these stories from a library book or on the Internet. Then you will not

ask me, "What's the purpose of these processes?"  

*Arjuna:* Forgive Vasudev!

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*Shrishail Mathapati,* Kolhapur 

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