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Year 7 Science — The components of food

Name the nutrients in food, sort familiar foods by the nutrient they are rich in, and read the results of the three food tests.

Name: ________________________

Before you start

Each part of this meal is a source the chapter names for one nutrient.

1234
  1. 1. Rice — carbohydrate
  2. 2. Pulses — protein
  3. 3. Ghee — fat
  4. 4. Lemon — vitamin C

One plate can carry several nutrient groups at once, which is what a balanced diet is built out of.

  1. 1.A diet that supplies the essential nutrients, roughage and water in the right amounts for proper growth is called a ___ diet. Which word fills the gap?

  2. 2.Put the chapter's starch test back into the order you would carry it out.

    • Take a small quantity of the food item
    • Put 2 or 3 drops of diluted iodine solution on it
    • Place it on a separate dish
    • Watch the colour of the food item

  3. 3.Match each nutrient to the sign that shows it is present in a food.

    • Starch
    • Fat
    • Protein
    • oily patch on paper
    • blue-black colour with iodine
    • violet colour in the test tube

  4. 4.A thali is served with rice, pulses, ghee and butter on it. Which of them does the chapter name as a source of protein?

    • a) Rice
    • b) Pulses
    • c) Butter
    • d) Ghee

  5. 5.The chapter splits the sources of protein into two lists. Sort each one.

    Groups: Plant source of protein · Animal source of protein

    • Paneer
    • Peas
    • Milk
    • Beans

  6. 6.Protein-rich foods go into growth and repair. What does the chapter call them because of that?

    • a) Roughage
    • b) Body-building foods
    • c) Protective nutrients
    • d) Energy-giving foods

  7. 7.Which pair of nutrients does the chapter group together as the energy-giving foods?

    • a) Proteins and vitamins
    • b) Fibre and water
    • c) Carbohydrates and fats
    • d) Vitamins and minerals

  8. 8.Food components that give energy, support growth, repair the body and guard it against disease have one name between them. What is that name?

Answer key — Year 7 Science — The components of food

  1. 1. balanced
  2. 2. 1. Take a small quantity of the food item 2. Place it on a separate dish 3. Put 2 or 3 drops of diluted iodine solution on it 4. Watch the colour of the food item
  3. 3. Starch → blue-black colour with iodine; Fat → oily patch on paper; Protein → violet colour in the test tube
  4. 4. b) Pulses
  5. 5. Peas → Plant source of protein; Beans → Plant source of protein; Milk → Animal source of protein; Paneer → Animal source of protein
  6. 6. b) Body-building foods
  7. 7. c) Carbohydrates and fats
  8. 8.
    • nutrients
    • nutrient