Year 8 - Cooking and nutrition
Macronutrients, fibre and water
Energy and nutrients: source and function
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
Pupils describe the source and function of macro and micro nutrients, as well as fibre and water in the diet for health. The concept of energy balance is reviewed, and pupils undertake nutritional analysis of recipes.
Lesson Summary
You will learn to explain why macronutrients, fibre and water are needed for health.
Key Notes
- Food and drinks provide energy and nutrients in different amounts, and have important functions for health.
- Carbohydrate, protein and fat are macronutrients and have different functions and sources. They provide energy.
- To maintain body weight we need to balance energy intake (from food and drink) with energy expenditure (from activity).
- Fibre is needed to keep our digestive system healthy. It is important to eat a variety of fibre-containing foods.
- We need water for a variety of functions, such as regulating body temperature and being physically active.
Vocabulary To Learn
- energy: derived from chemical combustion of food and required for us to stay alive and function
- macronutrients: nutrients the human body needs in larger amounts, and provide energy: fat, protein and carbohydrate
- fibre: carbohydrates found typically in plant foods that are resistant to digestion
- water: a colourless and odourless liquid, the basis of fluids in living organisms
Common Mistakes To Avoid
- We should eat less starchy foods, as these are 'fattening' in the diet and provide little else.
3 Quick Questions (With Answers)
1. Explain the lesson in two key points.
Food and drinks provide energy and nutrients in different amounts, and have important functions for health. Carbohydrate, protein and fat are macronutrients and have different functions and sources. They provide energy.
2. What does this key word mean in this lesson? 'energy'
derived from chemical combustion of food and required for us to stay alive and function.
3. Correct this common mistake.
Mistake: We should eat less starchy foods, as these are 'fattening' in the diet and provide little else. Correction: Starchy foods should make up just over a third of the diet, as they are an important source of energy, fibre and micronutrients.
More Lessons In This Unit
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