being very overweight, caused by taking in too much energy
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heart disease and strokes
caused by the build up of fatty substances cholesterol in the walls of the arteries
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diabetes
caused by poor diet or obesity leading to the body being unable to effectively control blood sugar levels
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carbohydrates proteins and fats
most important groups, all contain elements of carbon, hydrogen and oxygen, proteins also contain nitrogen
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carbohydrates
include sugars such as glucose and lactose, more complex are cellulose glucose and starch, sugars taste sweet and soluble in water, more complex carbohydrates consist of long chains of sugars joined together
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starch
very important for human diet,broken down to glucose, store carbohydrates as glycogen, broken down to glucose when sugar reserves are low, cellulose found in plant cell walls cannot be digested by humans, provides energy
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protein
provides building blocks for the growth and respair of cells, used as energy when reserves of carbohydrates and fat are low, proteins are complex molecules consisting of long chains of amino acids
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fat
excellent energy store, provides double the energy per gram of carbohydrate and protein, when fat is digested it is broken down into fatty acids and glycerol
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Other cards in this set
Card 2
Front
heart disease and strokes
Back
caused by the build up of fatty substances cholesterol in the walls of the arteries
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