Key Stage 3 Biology: Nutrition Quiz

What is the primary function of carbohydrates in the body?

• To repair tissues

• To store vitamins

• To provide energy

• To build muscle

Which of the following is a source of complex carbohydrates?

• Candy

• Potatoes

• Honey

• Fruit juice

What is the main role of proteins in the body?

• To provide energy

• To aid in digestion

• To support growth and repair

• To store fat

Which food is a good source of protein?

• Butter

• Fish

• Apple

• Rice

What is the primary function of lipids in the body?

• To enhance vision

• To build bones

• To store energy

• To provide quick energy

Which of the following is a source of lipids?

• Carrot

• Milk

• Orange

• Bread

Which vitamin is essential for strong bones and teeth?

• Iron

• Calcium

• Vitamin C

• Vitamin A

What is the role of iron in the body?

• To strengthen bones

• To carry oxygen in red blood cells

• To aid in digestion

• To improve skin health

What is the main benefit of dietary fiber?

• To provide energy

• To aid in digestion

• To store fat

• To build muscle

Approximately what percentage of the human body is water?

• 30-40%

• 50-60%

• 60-70%

• 70-80%