Energy systems: Nutrition (3.1) [34 marks]

Lipids are a macronutrient. Which are functions of lipids?

• I and II only

• I and III only

• II and III only

• I, II and III

Which characteristic distinguishes unsaturated fatty acids from saturated fatty acids?

• Ability to bond to glycerol

• Composition of carbon, hydrogen and oxygen

• Plant origin

• Presence of double bonds between carbon atoms

Which option states the approximate energy content of 100 g of protein?

• 100 kJ

• 1720 kJ

• 1760 kJ

• 4000 kJ

Which food is most likely to promote growth and repair of muscles?

• White rice

• Green apple

• Red lentils

• Olive oil

What type of fatty acid is represented in the diagram shown?

• Trans fat

• Monounsaturated fat

• Polyunsaturated fat

• Saturated fat

What are the general recommendations for a healthy balanced diet?

• Carbohydrate: 10–15%, Protein: 15–30%, Fat: 80–90%

• Carbohydrate: 55–75%, Protein: 10–15%, Fat: 15–30%

• Carbohydrate: 15–30%, Protein: 55–75%, Fat: 10–15%

• Carbohydrate: 80–90%, Protein: 15–30%, Fat: 55–75%

Which characteristic distinguishes unsaturated fatty acids from saturated fatty acids?

• Ability to bond to glycerol

• Composition of carbon, hydrogen and oxygen

• Plant origin

• Presence of double bonds between carbon atoms

What is the ratio of carbon, hydrogen and oxygen in a glucose molecule in fruit juice?

• 1:2:1

• 1:3:1

• 6:14:2

• 2:1:2

Which is a micronutrient?

• Lipids

• Carbohydrates

• Proteins

• Minerals

Which contains the most saturated fat?

• A spoon of vegetable oil

• A portion of red meat

• A piece of fruit

• A cup of grains