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Six Nutrients and a Balanced Diet
A balanced diet supplies the body with appropriate amounts of the major nutrient groups needed for energy, growth, repair and healthy body functions.
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Six Nutrients and a Balanced Diet
The six main nutrient groups are:
carbohydrates; proteins; lipids/fats; vitamins; minerals; water.
The body needs all of them, but not necessarily in equal amounts.
A balanced diet gives enough nutrients to meet the body's needs without excessive or insufficient intake.
Recommended for Class 9
Six Nutrients and a Balanced Diet
Definition
A balanced diet supplies the body with appropriate amounts of the major nutrient groups needed for energy, growth, repair and healthy body functions.
Formula / Key Relation
Different nutrients have different roles.
Carbohydrates → major energy source.
Proteins → growth and repair.
Lipids → concentrated energy store and part of cell membranes.
Vitamins → required in small amounts for normal body processes.
Minerals → inorganic nutrients needed for functions such as bone formation and oxygen transport.
Water → solvent, transport medium and temperature regulation.
Balanced diet:
`appropriate energy + essential nutrients + sufficient water`
Six nutrient groups:
`carbohydrates + proteins + lipids + vitamins + minerals + water`
Six Nutrients and a Balanced Diet — Advanced
A balanced diet is not a fixed meal plan for every person. Nutritional requirements can vary with age, activity level and physiological needs.
The key scientific idea is that nutrients have different biochemical functions, so long-term health requires an appropriate combination rather than relying heavily on one nutrient class.
Common Mistakes
Common Mistakes
- Mistake
Do not say vitamins and minerals are major energy sources.
- Mistake
They are important for body functions, but they are not used as the main source of energy.
- Mistake
### Sticky Notes
- Mistake
SIX NUTRIENTS
- Mistake
Carbohydrates → energy
- Mistake
Proteins → growth/repair
- Mistake
Lipids → energy store
- Mistake
Vitamins → regulation
- Mistake
Minerals → body functions
- Mistake
Water → solvent/transport
Revision Zone
60-Second Revision
Quick cues from this topic — use them for last-minute revision.
A balanced diet provides appropriate amounts of carbohydrates, proteins, lipids, vitamins, minerals and water.
The six major nutrient groups are carbohydrates, proteins, lipids, vitamins, minerals and water. Carbohydrates are a major energy source, proteins are important for growth and repair, and lipids provide concentrated energy and form part of cell membranes. Vitamins and minerals are needed in smaller amounts for normal body functions, while water acts as a solvent, transport medium and temperature regulator. A balanced diet means obtaining suitable amounts of all these nutrients rather than equal amounts of each.
- Definition
- The six major nutrient groups are carbohydrates, proteins, lipids, vitamins, minerals and water. Carbohydrates are a major energy source, proteins are important for growth and repair, and lipids provide concentrated energy and form part of cell membranes. Vitamins and minerals are needed in smaller amounts for normal body functions, while water acts as a solvent, transport medium and temperature regulator. A balanced diet means obtaining suitable amounts of all these nutrients rather than equal amounts of each.
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Practice
PQ
Q1. Name the six nutrient groups
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Q2. Main role of carbohydrates?
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Q3. Main role of proteins?
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Q4. Why is water important?
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Q5. Does balanced mean equal quantities?
Exam Practice
EQ
Q1. Define a balanced diet
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Q2. List the six nutrient groups
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Q3. Explain the functions of carbohydrates and proteins
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Q4. Explain the importance of vitamins, minerals and water
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Q5. Explain why balanced does not mean equal
School-standard facts for Matric and Intermediate. Original explanations — not copied from textbooks.