KS3 Nutrition
What's covered
Key facts
Iron-deficiency anaemia is caused by too little dietary iron (or by blood loss), reducing haemoglobin in red blood cells.
Athletes need more carbohydrate than sedentary adults to fuel exercise and refill muscle glycogen stores.
Beans and pulses are part of the protein foods group and are a recommended protein source.
The "average reference intake" used on UK front-of-pack labelling is about 2000 kcal per day (women) and 2500 kcal per day (men).
The UK recommended daily fibre intake for an adult is about 30 g/day.
Bread is mainly starch (a complex carbohydrate); eggs/yoghurt/cheese are not predominantly carbohydrate sources.
A layer of body fat helps the body keep warm in cold conditions.
Proteins are made of building blocks called amino acids.
Calcium is essential for building and maintaining strong bones and teeth.
B vitamins help the body release energy from carbohydrates, fats and proteins (they are co-factors for metabolic enzymes).
Sample questions
A taste of the 152 questions in this topic — answers marked. Sign up to practise the full set with spaced repetition.
What dietary habit is the main cause of obesity?
- •consuming too much protein in place of carbohydrates
- •eating at irregular times and skipping breakfast
- ✓eating more energy than the body uses
- •having a diet low in vitamins and minerals
Which life stage needs the most calcium?
- •adults
- •elderly
- ✓teenagers
- •toddlers
Which food group is largest in the Eatwell Guide?
- •dairy and alternatives
- ✓fruit and vegetables
- •protein foods
- •starchy carbohydrates
Which unit do most people use to track daily energy intake in the UK?
- ✓kilocalorie (kcal)
- •kilojoule (kJ)
- •the kilogram (kg)
- •the watt (W)
Which food is a good source of dietary fibre?
- •chicken breast
- •full-fat milk
- •white rice
- ✓wholegrain bread
What is the main function of carbohydrates in the body?
- •to absorb fat-soluble vitamins
- •to build and repair muscle tissue
- ✓to provide energy for body functions and activity
- •to regulate the body's fluid balance
Try it for four weeks. Free.
One school. Unlimited classes. No card limit. No teacher limit. If your students aren't practising daily by the end of the trial, you owe us nothing.