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AS Biology - Biological Molecules

        Help!  

Class
Components
Chemical Element
Foods containing it
Role in the body / function
Examples
Proteins   Amino Acids   Nitrogen (N) Sulphur (S) Carbon (C) Oxygen (O) Hydrogen (H)   Meat, fish, eggs, milk   Control and catalyse: -growth -repair -local transport process   -Membrane proteins -Enzymes: ie. amylase (breaks down starch)  
🗑
Carbohydrates   Monosaccharides   Carbon (C) Oxygen (O) Hydrogen (H)   -Sugar foods: sweets, cake, jam -Starch foods: bread, rice, pasta, flour   Provide cells with energy (short-term)   -Glucose, fructose -Starch, Cellulose  
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Lipids   -Glycerol -Fatty Acids   Carbon (C) Oxygen (O) Hydrogen (H)   Butter, cheese, nuts, crisps   -Provide cells with energy (long-term) -Major components of cell membranes -Insulation of body   -Phospholipids in cell membrane -Butyric acid (=butter fat) -Stearic acid -Cholesterol  
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Minerals   Ions   Potassium (K+) Sodium (Na+) Calcium (Ca2+) Iron (Fe3+) Magnesium (Mg2+) Chloride (Cl-) Fluoride (F-) and others   Milk, cheese, salt (NaCl)   various   -bones and teeth (calcium) -Red blood cells (iron) -Electric transmission in the brain (Na+, K+, Cl-)  
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Vitamins   Various   Various   Fruits Vegetables   Various   -Vitamin C (healthy skin, gums and bones) -Vitamin D (healthy teeth and bones, needed for absorption of calcium)  
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