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Fill inthe blanks:
1. Vitamins play a very important part in all life processes.
2 Cells of body use glucose for generating energy.
Match the Pair:
1. Carbohydrates- Glucose
2. Fats- Glycerol
True or False:
1. Vitamins do not important to the body. False
2. Digestion of fats generates energy. True
Answer in one sentence:
1. Give the names of chemical preservatives.
Ans: Sodium metabisulphate, Citric acid, Boric acid, Vinegar are chemical preservatives.
2. Why cooked food gets spoilt quickly?
Ans: Cooked food gets spoilt quickly due to rapid growth of micro-organisms in it.
Answer in Short:
1. What is meant by pasteurisation?
Ans: Milk is spoiled due to rapid growth of micro-organisms in it. For preserving food for long time it is necessary to limit growth of micro-organisms must be restricted. For these purpose it is first heated to a temperature of 800C to destroy any micro-organisms in it and then cooled quickly. This process is called pasteurisation.
Write the information about vitamins by completing table
Give Reasons:
1. We boil milk time to time.
Ans: Micro-organism grows rapidly in the milk and spoils it. For preserving milk from spoiling it is necessary to destroy micro-organism in the milk. So, we boil milk time to time.
2. We should include fibrous substance in our diet.
Ans: Fibrous substance contains cellulose. Since cellulose is not digested, we do not get energy from it. However, it helps in forming the stools and thus expelling the undigested waste part of food. So, we should include fibrous substance in our diet.
Short Note:
1. Adulteration of Food – It is necessary that we eat only safe food. However, we sometimes get adulterated foodstuffs. We must alert while buying any food items. Adulteration can be detected by simple methods. If we eat adulterated food we are at the risk of falling ill. It is an offence to adulterate foodstuffs. Food and Drug Administration department regularly inspect food items for adulteration of food.
2. Use of refrigerator – The growth of micro-organisms depends upon temperature. If food is preserved at low temperatures it lasts longer and better. In cool place, leafy vegetables remain fresh for a longer time. To preserve leafy vegetables, fruits, cooked food it is necessary to store them at low temperatures. Micro-organisms cannot grow at the temperature inside a refrigerator, i.e. at 50C, and food remains safe in it.
Define:
1. Autotrophs: Some living things can make their own food. They are called autotrophs.
2. Balanced Diet: A diet which includes carbohydrates, proteins, and fats as well as minerals and vitamins are provided in proper proportion is called balanced diet.