biology

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Author:
JemmaMcc_12
ID:
191428
Filename:
biology
Updated:
2013-01-05 07:30:23
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biology
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Description:
food and diet
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  1. We have a balanced diet when we have the correct amount of each of the seven food groups.
  2. CARBOHYDRATES

    PASTA, BREAD, RICE

    ENERGY- carbohydrates are used to produce energy inside all of your body cells.

    we ingest starch in food that we eat, the starch is broken down into glucose

    Glucose is used immediatel in the reaction of respiration to give us instant energy
  3. PROTEINS

    MEAT, FISH, EGGS

    BUILDING AND REPAIRING CELLS.

  4. LIPIDS

    LARD, EGG YOLK, SPREADS

    ENERGY- fats are used to produce energy in cells good for storage.

    in small amounts for - insulation, protection and energy.
    larger amounts = obesity or heart disease.
  5. FIBRE

    FRUIT AND VEG

    PREVENTS CONSTIPATION

    keeps food moving and can lower the risk of bowel cancer.
    stimulates the gut and prevents constipation.
    helps prevent diabetes
  6. MINERALS
    A) CALCIUM

    MILK AND CHEESE

    STRENGTHENS OUR TEETH AND BONES.

    PREVENTS RICKETS
  7. B)IRON

    MEAT AND EGGS

    we use iron to build a protein called haemoglobin.

    PREVENTS ANAEMIA.
  8. VITAMINS
    A) VITAMIN C

    ORANGES, KIWI, CITRUS FRUIT.

    HELPS OUR CELLS STICK TOGETHER.

    PREVENTS SCURVY
  9. B) VITAMIN D

    FULL FAT MILK, CREAM, EGGS

    HELPS OUR INTESTINES ABSORB CALCIUM

    PREVENTS RICKETS
  10. WATER

    ALL FOODS

    PREVENTS DAMAGE TO YOUR CELL-water is needed for chemical ractions in cells
  11. Explain why an office workr with an average daily intake of 20,000KJ is likely to be overweight.
    The person is taking in more energy than they are using. This extra is stores as fat.
  12. STARVATION- a condition when you have very little or no food at all.
  13. MALNUTRITION- when we get enough energy from what we eat but some major food groups are absent from our diet.

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