4. Balanced diet

What is the consequence of consuming too much salt?

• Obesity

• Diabetes

• High blood pressure

• Anaemia

Why do packets of food give nutritional information per 100g?

• 100g is an average sized portion

• To enable different foods to be compared

• 100g is the recommended daily intake

• 100g is easy to measure

What happens to the excess energy that is consumed?

• Burnt off

• Used in respiration

• Converted to fat

• Converted to carbohydrates

What are the health risks if too much sugar is consumed?

• Type 1 diabetes

• Type 2 diabetes

• High blood pressure

• Anaemia

What is iron needed for?

• To make white blood cells

• To make haemoglobin in red blood cells

• To increase muscle strength

• To maintain healthy tissue

Which of the following variables is not a controlled variable in the burning food experiment?

• The volume of water in the boiling tube

• The distance of the burning food from the tube

• The starting temperature of the water

• The speed with which the burning food is transferred from the flame to the tube

Which of the following is a risk when carrying out the burning food experiment?

• Fumes from burning food can cause allergic reactions

• Hot water can scald

• Hot apparatus can burn

• When lighting the food, the Bunsen flame may burn the skin

Why are the energy values from the burning food experiment always significantly less than those on food packets?

• The food is less calorific

• Smaller masses of food are burnt

• Heat energy is lost to the surrounding environment

• The volume of water is smaller

What aspect of the data is ensured by keeping all of the controlled variables constant?

• Repeatability

• Reproducibility

• Accuracy

• Validity

Which vitamin is needed to maintain healthy tissues?

• Vitamin A

• Vitamin B

• Vitamin C

• Vitamin D