Diet and Food

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  • Created by: Clarisse
  • Created on: 30-05-13 20:49
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  • Diet and Food
    • Nutrition
      • carbohydrates
        • energy source
        • rice potato bread pasta
        • 250g needed per day
      • Proteins
        • growth and repair
        • meat cheese milk lentils bean
        • 60g neeeded per day
      • Fats
        • Energy store, cell membranes, waterproofing, absorption of fat and soluble vitamins.
        • Meat, Dairy, Oils
        • 80g needed per day
      • Minerals
        • Chemical reactions
        • Vegetables
        • 9.2g needed per day
      • Vitamins
        • chemical reactions
        • meat fruit veg
        • traces needed per day
      • Water
        • transport, medium for chemical reactions
        • fruit veg and water
        • variable amount needed per day
      • Fibre
        • Aids peristalsis
        • Fruit and veg
        • 12g needed per day
    • key terms
      • balanced diet
        • contains all nutrients required for health in appropriate proportions
      • Obesity
        • A person is 20% or more heavier than the recommended weight for their height
        • linked to cancer, cardiovascular disease, type 2 diabetes, gallstones, arthritis, hypertension
      • Malnutririon
        • too much or too little of the balanced diet components
      • Body Mass index
        • Mass in Kg/(height in m)^2. Over 30=obese
    • Coronary Heart Disease
      • Cause
        • Deposition of fat in the artery walls by atherosclerosis. Causes reduced blood flow and oxygen starvation.
        • Salt decreases water potential in the blood which means more water is held in the blood and the blood pressure increases meaning there is damage to the lining of arteries
        • fats:used to make glycoproteins
        • Cholesterol  is needed for cell membranes. Transported by lipoproteins
          • Lipoproteins
            • High density
              • unsaturated fats, cholesterol, protein. Carry cholesterol from tissues to liver and may remove fatty deposits of atherosclerosis.
            • Diet and Food
              • Nutrition
                • carbohydrates
                  • energy source
                  • rice potato bread pasta
                  • 250g needed per day
                • Proteins
                  • growth and repair
                  • meat cheese milk lentils bean
                  • 60g neeeded per day
                • Fats
                  • Energy store, cell membranes, waterproofing, absorption of fat and soluble vitamins.
                  • Meat, Dairy, Oils
                  • 80g needed per day
                • Minerals
                  • Chemical reactions
                  • Vegetables
                  • 9.2g needed per day
                • Vitamins
                  • chemical reactions
                  • meat fruit veg
                  • traces needed per day
                • Water
                  • transport, medium for chemical reactions
                  • fruit veg and water
                  • variable amount needed per day
                • Fibre
                  • Aids peristalsis
                  • Fruit and veg
                  • 12g needed per day
              • key terms
                • balanced diet
                  • contains all nutrients required for health in appropriate proportions
                • Obesity
                  • A person is 20% or more heavier than the recommended weight for their height
                  • linked to cancer, cardiovascular disease, type 2 diabetes, gallstones, arthritis, hypertension
                • Malnutririon
                  • too much or too little of the balanced diet components
                • Body Mass index
                  • Mass in Kg/(height in m)^2. Over 30=obese
              • Coronary Heart Disease
                • Cause
                  • Deposition of fat in the artery walls by atherosclerosis. Causes reduced blood flow and oxygen starvation.
                  • Salt decreases water potential in the blood which means more water is held in the blood and the blood pressure increases meaning there is damage to the lining of arteries
                  • fats:used to make glycoproteins
                  • Cholesterol  is needed for cell membranes. Transported by lipoproteins
                    • Lipoproteins
                      • High density
                        • unsaturated fats, cholesterol, protein. Carry cholesterol from tissues to liver and may remove fatty deposits of atherosclerosis.
                      • Low density
                        • Saturated fats, cholesterol and proteins. Carry cholesterol from liver to tissues, can cause deposition in artery walls along the way
              • Improving food production
                • Increasing growth rate, overall yield, reducing loss due to disease and pests, stabilising plant height improve responses to fertilsers
                • Selective Breeding
                  • 1.select organisms with desired characteristics 2.Breed these together 3.select offspring with desired characteristics 4.breed these together
                • Chemicals
                  • fertilisers
                    • minerals needed for plant growth, added to the soil
                  • Pesticide
                    • Kills pests
                  • Antibiotic
                    • Kills or prevents reproduction of bacteria
                • Preventing spoilage
                  • Cooking:denatures enzymes
                  • Pasteurising
            • Low density
              • Saturated fats, cholesterol and proteins. Carry cholesterol from liver to tissues, can cause deposition in artery walls along the way
    • Improving food production
      • Increasing growth rate, overall yield, reducing loss due to disease and pests, stabilising plant height improve responses to fertilsers
      • Selective Breeding
        • 1.select organisms with desired characteristics 2.Breed these together 3.select offspring with desired characteristics 4.breed these together
      • Chemicals
        • fertilisers
          • minerals needed for plant growth, added to the soil
        • Pesticide
          • Kills pests
        • Antibiotic
          • Kills or prevents reproduction of bacteria
      • Preventing spoilage
        • Cooking:denatures enzymes
        • Pasteurising

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