Question
What are various functions of proteins?
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Answer
Functions of proteins are:
- Proteins are the building materials of our body.
- Proteins are the constituents of enzymes.
- Proteins make our muscles, skin, hair and nails.
- Proteins form a red pigment in blood which acts as an oxygen carrier.
- Proteins like fibrin help in clotting of blood.
- Proteins help in repairing damaged cells, replacing wornout or dead cells and tissues.
- Proteins help to develop resistance of the body against various infections.
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Now answer the following:
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Match the mixtures in Column $I$ with their method of separation in Column $II$.
→|
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$COLUMN\ I$
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$COLUMN\ II$
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$a$
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Oil mixed in water
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$i$
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Sieving
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$b$
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Iron powder mixed with flour
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$ii$
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Hand picking
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$c$
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Salt mixed with water
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$iii$
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$d$
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$iii$
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$e$
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→$(a)$ What is a scale?
$(b)$ Name devices that can be used to measure length.
$(c)$ What new method of measuring line by using a broken scale was taught by Ishika's teacher?
$(d)$ What values of Ishika is shown here?
Match the organisms given in column $I$ with their part/ product in column $II$ that is used by human beings as food.
→|
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$COLUMN\ I$ |
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$COLUMN\ II$ |
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$a$
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Mustard plant
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$i$
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Meat
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$b$
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Goat
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$ii$
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Fruits and vegetable
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$c$
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Hen
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$iii$
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Seed
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$d$
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smoke
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$iv$
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Direction of air flow
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$e$
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wind
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$v$
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Prevent dust particles
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| Air | Sunlight | Water | Prediction | Observation | ||
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