Food and Energy

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  • Created by: Eesha Dev
  • Created on: 25-06-15 12:54
How would you test for protein?
You would add sodium hydroxide and copper sulphate (Biuret Reagent) to food and if pale blue goes purple, there is protein.
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How would you test for fats?
You would mix food with ethonol and filter it. Add clear solution to water and white emulsion means fat is in it. OR rub fod onto filter paper and hold up to light. If it is transparent, contains fat.
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Name the seven main food groups and what they are eaten for.
Carbohydrates for a large amount of energy, proteins for growth and repair, fats for insulation and store of excess energy, vitamins for healthy eyes, nerves, joints, blood vessels, calcium, etc, minerals for various reasons like red blood, strong te
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What is transpiration?
Transpiration is the movement of water up through a plant against gravity. Water is absorbed through the root hairs which then travel up the xylem of the stem which then enters the leaf through the vein which then evaporates.
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What is respiration?
It is a chemical reaction which happens in every cell of every plant to turn food into energy
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What is photosynthesis?
A chemical process which takes place in every green plant to produce food in the form of glucose
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Name four adaptations of a leaf
Veins to transport and carry water and it keeps leaf's structure. Stomata which are small holes on the under side of leaf for exchange of gases. Large surface area to absorb as much sunlight as much as possible. Chloroplasts which contain chlorophyll
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Card 2

Front

How would you test for fats?

Back

You would mix food with ethonol and filter it. Add clear solution to water and white emulsion means fat is in it. OR rub fod onto filter paper and hold up to light. If it is transparent, contains fat.

Card 3

Front

Name the seven main food groups and what they are eaten for.

Back

Preview of the front of card 3

Card 4

Front

What is transpiration?

Back

Preview of the front of card 4

Card 5

Front

What is respiration?

Back

Preview of the front of card 5
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