Proteins


Components of Food I - Concepts
Class - 6th Foundation NTSE Subjects
 
 
Concept Explanation
 

Proteins

Proteins:

  • Proteins are needed by our body for muscle building and repairing worn out tissues.
  • Our muscles, organs and blood are made up of mostly proteins. Proteins in our diet come from both plants and animals sources.
  • When the body is building new tissues, more proteins are required, so growing children need more protein.
  • Meat, fish, egg and milk are some animal sources of proteins. Pulses, soybeans, grams and nuts are some plant sources of proteins.
  • To test if a food item contains protein of not:

  • Take a small quantity of the food items to be tested. Grind/mash/paste/powder the food item.
  • Put the food item into a test tube.
  • Add 10 drops of water and shake the test tube.
  • Using a dropper add two drops of copper sulphate solution to the test tube.
  • Add 10 drops of caustic soda solution and shake the test tube.
  • Observe the colour of the mixture.
  • Violet colour indicates the presence of proteins in the tested food item. 
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    Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    Mainly pulses are the sources of __________________

    Right Option : A
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    Explanation
    Question : 2

    Which nutrients can be identified by using copper sulphate and caustic soda?

    Right Option : B
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    Explanation
    Question : 3

    Which of the following source of protein is different from others?

    Right Option : D
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    Explanation
     
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