Unit 7

• What is the definition of a balanced diet?

  A diet that contains adequate amounts of all the necessary nutrients required for healthy growth and activity.
• How many food groups are there in a balanced diet?

  Seven food groups.
• What are the seven food groups?

  1. Carbohydrates
  2. Proteins
  3. Fats
  4. Fibre
  5. Vitamins
  6. Minerals
  7. Water
• What is the primary function of carbohydrates in the body?

  Carbohydrates are needed to release energy.
• What role do proteins play in the body?

  Proteins are needed to help you grow and for cell repair and replacement.
• Why are fats important in a balanced diet?

  Fats are needed for energy and to keep you warm.
• What is the function of fibre in the diet?

  Fibre is needed to aid digestion.
• What do vitamins contribute to the body?

  Vitamins help the body work and aid concentration.
• What is the role of minerals in the body?

  Minerals help the body work and assist in decision making.
• Why is water essential in a balanced diet?

  Water is needed to stop the body from dehydrating and to maintain fluid levels.
• What are the five major food groups and their functions?

  1. Carbohydrates - for energy
  2. Vegetables - for vitamins, minerals & fibre for healthy bodily functions
  3. Protein - for growth and repair
  4. Fats, oils & sweets - for energy
  5. Eating these foods in the right proportions is important for health.
• What should you do when comparing food labels?

  Look at the energy provided by each food, measured in kJ or kcal.
• What are the 7 food groups mentioned in the lesson?

  Carbohydrates, Protein, Fats and oils, Minerals, Vitamins, Fibre, Water
• Why might the amount of energy used by person D differ from persons A, B, and C?

  Differences could be due to factors like age, gender, or exercise levels.
• What are the three ways to measure the growth of an organism?


  Height, weight, and mass
• What factors affect metabolic rate?

  Age, gender, inherited factors, body size/weight, exercise levels, proportion of muscle to fat, and pregnancy.
• Why do people's energy needs vary?

  Energy needs vary due to differences in metabolic rate.
• Why is it important to consider that some foods belong to more than one food group?

  Because it affects choices when aiming for a balanced diet
• What are two ways an obese person could lose mass?

  By reducing caloric intake and increasing physical activity.
• What are the true or false statements regarding proteins and carbohydrates?

  • Proteins are needed to help you grow: True
  • Fish is a good source of carbohydrate: False
  • Bread is a good source of carbohydrate: True
  • Eating a balanced diet means eating no fat at all: False
• What is the difference between growth and development?

  Growth refers to an increase in size, while development involves changes in the organism's structure and function
• What are the uses and good sources of carbohydrates?

  • Use: Energy
  • Good sources: Bread, cereal, pasta, sugar, rice, potatoes
• How can diet and exercise affect growth and development?


  A balanced diet and regular exercise can promote healthy growth and development
• What are the uses and good sources of protein?

  • Use: Growth and repair
  • Good sources: Eggs, milk, meat, fish
• How does smoking affect health?

  Smoking can lead to various health issues, including respiratory diseases and cancer
• What are the uses and good sources of fats and oils?

  • Use: Store energy and insulation
  • Good sources: Red meat, fried food, butter, cakes, crisps, cheese
• What are the uses and good sources of minerals?

  • Use: Keep us healthy (e.g., Calcium for teeth, Iron for blood)
  • Good sources: Fruit, vegetables, fish, herbs, spices, pate
• What are the uses and good sources of vitamins?

  • Use: Keep us healthy (e.g., Vitamin A for eyes, Vitamin C for skin)
  • Good sources: Fruit, vegetables, fish, herbs, spices, pate
• What is the definition of growth?

  Growth is defined as an increase in size, length, and mass
• What are the uses and good sources of fibre?

  • Use: Keeps the digestive system healthy
  • Good sources: Fruit, vegetables, cereal, wholemeal products
• Why is growth important?

  Growth allows organisms to develop, reproduce, and adapt to their environment
• What are the uses and good sources of water?

  • Use: Keeps the body hydrated
  • Good sources: Water, fruit, vegetables, drinks
• What is the primary function of carbohydrates in the body?

  To provide energy
• What is wet mass?

  Wet mass is the mass of an organism that includes its water content
• What is the primary function of protein in the body?

  For growth and repair
• What is a limitation of measuring wet mass?

  The mass can vary from day to day due to changes in water content
• What is the primary function of fats and oils in the body?

  To store energy and provide insulation
• What is dry mass?

  Dry mass is the mass of an organism after removing its water content
• What is the primary function of minerals in the body?

  To keep us healthy
• What is a limitation of measuring dry mass?

  The organism must be dead to measure its dry mass