IGCSE Biology Paper-3: Specimen Questions with Answers 356 - 356 of 358
Passage
A balanced diet contains seven different groups of substances.
Three of these groups of substances are fats, fiber (roughage) and vitamins.
Question 356 (1 of 2 Based on Passage)
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State the names of four other groups of substances in a balanced diet.
EditExplanation
There are seven essential factors for a balanced diet: carbs, protein, fat, fiber, vitamins, minerals, and water.
S. No. | Nutrient | % of daily calories | Function | Source |
1 | Carbs | 45 – 55% | Energy | Grains (refined & unrefined) : wheat, maize, corn, millet, oats, rice, flour, pasta, noodles; potatoes; sweet potatoes, yam. Fruit (sugar) . |
2 | Protein | 10 – 35% | Tissue growth and maintenance | Meat, fish, nuts, eggs, soya, beans, and pulses. |
3 | Fat | 20 – 35% from fat | Energy, energy storage, hormone production | Nuts, seeds, plant oils, dairy products (milk, cheese) . |
4 | Fiber | Included in carbs. | Regulates blood sugar levels, bowel function and bowel health. | Peas, beans, vegetables, fruit, oats, whole grains, brown rice, nuts, seeds. |
5 | Vitamins & minerals | trace | Metabolism regulation, aiding cell growth, other biochemical functions | Specific to each vitamin/mineral. A range of vegetables, lean meat, nuts and seeds will cover most people՚s needs. |
6 | Water | 0 | Maintaining hydration | Drinking water, other beverages. About 20% of water intake comes from food. |