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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*:

1) *Write a short note on:* Anaerobic respiration in living cells.

2) *Fill in the blanks.*

a) We get ... Kcal of energy per gram of protiens. 

b) Our body produces essential proteins from..... acids.

c) Insulin is an example of ......

d) .....  is the most abundant protein found in nature.

e) Unwanted amino acids are Brocken down and the ...... formed is eliminated out of the body.

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😇 *Always remember!*

◆ In the first topic we learned that all types of proteins are synthesized by DNA through the RNA.

◆ Protein is a basic component of cells.  Proteins are mainly made up of a chain of carbon, hydrogen, oxygen, nitrogen and amino acids.

◆ Kwashiorkor and Marasmus are protein deficient diseases found in young children. --------------------------------

🥱 *It's amazing to hear!*

1. Protein helps in deciding your body structure and is involved in cell division for growth, reproduction and healing. 

2. Human body contains around 100,000 different proteins made by the different combinations of 20 amino acids. 

3. Approximately 18-20% of the body weight is due to proteins. 

4. The lifespan of proteins is only two days or less.

5. Hair and nail are made up of a protein called keratin and these have sulphur bonds. Curlier the hair the more sulphur links they have.

6. Worried about hair fall? Your hair is mostly made of proteins. They are continuously in the process of growing for 2-3 years after which they fall and get replaced by new hair. Protein plays a key role during the growth phase. Hence, protein deficiency may cause more hair fall. Eat protein rich foods to prevent hair fall.

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*Shrishail Mathapati,* Kolhapur 

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