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5416583
Food
Description
Mind Map on Food, created by Rachel Garvin on 13/05/2016.
No tags specified
juniorcert #jc # science # biology
Mind Map by
Rachel Garvin
, updated more than 1 year ago
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Created by
Rachel Garvin
over 8 years ago
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Resource summary
Food
A Balanced Diet
Contains the right amounts of each of the six different food types
Food Types
Carbohydrates
Sugars
Sweets; Fruit;
Instant energy
Starch
Bread; Potatoes;
Supply energy more slowly
Fibre
Brown Bread; Cereals;
Stimulates movement of food through the intestines
Fats
Oils; Butter;
Long term energy store
Proteins
Meat; Eggs
Make muscles and hair
Vitamins
Vitamin C
Oranges; Green Veg;
Healthy skin and bones
Vitamin D
Milk; Cheese;
Healthy bones
Minerals
Iron (Fe)
Red Meat; Green Veg;
Haemoglobin (red blood)
Calcium (Ca)
Milk; Yoghurt;
Healthy bones
Water
Drinks
Allows cells to work
Food Type
Source
Function
Food Pyramid
Dairy Foods (3)
Proteins (2)
Fatty & Sweet Foods (Rarely)
Fruit & Vegetables (5)
Carbohydrates (6)
Food Tests
Starch
Iodine
No
Red/Yellow
Blue/Black
Simple Sugar
Benedict's Solution
Yes
Blue
Red
Simple Sugar Test only works for glucose not sucrose
Fat
Brown Paper
No
No stain
Stain
Protein
Sodium hydroxide and copper sulfate (Biuret Test)
No
Blue
Purple/Violet
Food
Test
Heat Needed
Original Colour
Final Colour
Food and Energy
Fats have twice the amount of energy as carbohydrates
Proteins are not used for energy
The amount of energy needed by a person depends on:
Factor
Energy Needed
Age
Young people need more energy than the elderly
Gender
Males need more energy than females
Activity Levels
More active people need more energy than less active people
Health
Healthy people need more energy than unhealthy people
To show the conversion of energy into heat
1. Place thermometer in water in a test tube that is in a retort stand
2. Hold a burning piece of cracker under it.
3. Note the temperature of the water rising.
4. This shows that the chemical energy in the cracker is converted to heat energy
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