y7 life 07 parts of diet
TRANSCRIPT
![Page 1: Y7 Life 07 parts of diet](https://reader035.vdocuments.net/reader035/viewer/2022070317/556248e3d8b42aa02d8b485c/html5/thumbnails/1.jpg)
Diet and Digestion
Learning Objectives:
• To understand the main parts of the human diet.
Starter:
• What did you have to eat yesterday?
• Is what you have eaten good for you?
![Page 2: Y7 Life 07 parts of diet](https://reader035.vdocuments.net/reader035/viewer/2022070317/556248e3d8b42aa02d8b485c/html5/thumbnails/2.jpg)
Why do we need a balanced diet?
Food provides us with the energy and materials required for: growth development repair reproduction
![Page 3: Y7 Life 07 parts of diet](https://reader035.vdocuments.net/reader035/viewer/2022070317/556248e3d8b42aa02d8b485c/html5/thumbnails/3.jpg)
What is a balanced diet?
We need the right amounts of nutrients in balance to maintain good health and organ functions.
Food provides us with energy to: maintain healthy weight have a strong immune system be healthy enough to work and learn be happy
![Page 4: Y7 Life 07 parts of diet](https://reader035.vdocuments.net/reader035/viewer/2022070317/556248e3d8b42aa02d8b485c/html5/thumbnails/4.jpg)
The Seven Food Groups
![Page 5: Y7 Life 07 parts of diet](https://reader035.vdocuments.net/reader035/viewer/2022070317/556248e3d8b42aa02d8b485c/html5/thumbnails/5.jpg)
Carbohydrates
Water
Protein
Vitamins
Minerals
Fibre
Fats
![Page 6: Y7 Life 07 parts of diet](https://reader035.vdocuments.net/reader035/viewer/2022070317/556248e3d8b42aa02d8b485c/html5/thumbnails/6.jpg)
Nutrient Role in Body Examples
Carbohydrates
Lipids
Proteins
Vitamins
Minerals
Fibre
Water
![Page 7: Y7 Life 07 parts of diet](https://reader035.vdocuments.net/reader035/viewer/2022070317/556248e3d8b42aa02d8b485c/html5/thumbnails/7.jpg)
Carbohydrates
Carbohydrates give you energy. We usually talk about 2 types of
carbohydrates: simple - sugars complex - starch
![Page 8: Y7 Life 07 parts of diet](https://reader035.vdocuments.net/reader035/viewer/2022070317/556248e3d8b42aa02d8b485c/html5/thumbnails/8.jpg)
Lipids (Fats)
Used to make cell membranes Stored to insulate organs - protection &
keeping warm Source of energy Essential for fat-soluble vitamins (A, D, E) Some make prostaglandins & hormones Long-chain omega-3 fatty acids in fish oils
protect us from heart disease
![Page 9: Y7 Life 07 parts of diet](https://reader035.vdocuments.net/reader035/viewer/2022070317/556248e3d8b42aa02d8b485c/html5/thumbnails/9.jpg)
Proteins
Use to make enzymes, hormones, antibodies, haemoglobin, muscles, cells membranes, collagen and elastin in connective tissue, bone.
Used for growth and repair of tissues.
![Page 11: Y7 Life 07 parts of diet](https://reader035.vdocuments.net/reader035/viewer/2022070317/556248e3d8b42aa02d8b485c/html5/thumbnails/11.jpg)
VitaminsRole in Body Examples of Foods
B group - coenzymes, aid processes eg respiration
cereals, wholemeal bread, leafy greens
A - dim-light vision, epithelial tissue, immune system
liver, green veg, orange fruit & veg
C - helps make connective tissue & absorb Fe in food
citrus, blackcurrants, kiwi fruit, peppers, potatoes
D - helps absorb Ca & deposit it in bones, protects against cancer & heart disease
oily fish, eggs, liver, made in skin when exposed to sunlight.
A,C,E - antioxidants, protect DNA & against cancer & heart disease
E: nuts, wholemeal bread
![Page 12: Y7 Life 07 parts of diet](https://reader035.vdocuments.net/reader035/viewer/2022070317/556248e3d8b42aa02d8b485c/html5/thumbnails/12.jpg)
MineralsRole in Body Examples of Foods
Fe - making haemoglobin red meat, spinach
Ca - hardens bones & teeth, helps blood clot, nerve conduction, muscle contraction
milk, cheese, yoghurt, broccoli
Na & K - nerve conduction & heart function
Na: table salt
K - bananas
P - make cell membranes & ATP for bones
cheese, pork, tuna, nuts
Mg - bones green veg
I - thyroxine table salt, seafood
Zn - insulin meat, cereals, nuts, milk
![Page 13: Y7 Life 07 parts of diet](https://reader035.vdocuments.net/reader035/viewer/2022070317/556248e3d8b42aa02d8b485c/html5/thumbnails/13.jpg)
Fibre
Indigestible plant matter, such as cell walls - adds bulk to food and takes up water in the gut. Helps us pass faeces easily.
Soluble fibre helps lower blood cholesterol levels
![Page 14: Y7 Life 07 parts of diet](https://reader035.vdocuments.net/reader035/viewer/2022070317/556248e3d8b42aa02d8b485c/html5/thumbnails/14.jpg)
Water
Makes up 70% of us - blood plasma is 90% water.
Needed for transport in the body. Needed for sweat, tears and urine.
![Page 15: Y7 Life 07 parts of diet](https://reader035.vdocuments.net/reader035/viewer/2022070317/556248e3d8b42aa02d8b485c/html5/thumbnails/15.jpg)
Superfoods
Some foods have been described as super foods, they are rich in several nutrients
Suggest why super foods are good for you and what effects they may have?