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Digestion coursework

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Introduction

Biology Test on Nutrients and Digestion Nutrients Carbohydrates * Contain: carbon, oxygen, hydrogen * Found in pasta, potatoes, bread, rice and sugars * Needed for energy-movement, digestion and warmth * Excess stored as glycogen in liver and muscles * Made from: Monosaccharide- single sugar unit e.g. glucose, fructose, galactose - Soluble - Small (not digested, pass directly in blood stream) ...read more.

Middle

- Glycogen- animal storage Too much carb causes obesity Too much sugar can rot teeth Fats * Contain: carbon, hydrogen, oxygen * Found in: butter, oil, margarine, peanuts, fatty meat * Needed for a) energy b) Insulation c) Storage of vit A and D * Excess stored under skin and around body organs * Made from fatty acids and glycerol Too much cholesterol blocks arteries Too much fat causes obesity Proteins * Contain: carbon, hydrogen, oxygen, ...read more.

Conclusion

iron, calcium...needed in small quantities * Iron found in meat, liver, kidney, spinach, brocolli Needed to make haemoglobin Lack causes anaemia and tiredness * Calcium found in milk, dairy products Needed to strengthen teeth, bones Lack causes rickets Vitamins e.g. vitamin C, D...needed in small amounts * Vitamin C water soluble & not stored in body Found in citrus fruits, blackcurrants, tomatoes Needed to heal wounds Lack causes scurvy, reduced resistance to disease * Vitamin D ...read more.

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