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biology

food

QuestionAnswer
6 common elements found in food carbon hydrogen oxygen nitrogen phosphorus sulfur
5 elements present in dissolved salts sodium magnesium chlorine potassium calcium
carbohydrates formula Cx(H20)
glucose formula C6 h206
3 categories of carbohydrates are monosacharides disacharides polysacharides
monosacharides contain 1 sugar unit eg fructose and glucose
disacharides contain 2 sugar molecules joined together
polysacharides are made of made up of many monosacharides joined together eg starch and cellulose
lipids (fats) contai what and are... 1)contain carbon hydrogen and oxygen 2)fats are solid at room temperature - oils liquid at room temperature
phospholipids are fat-like substances where one of the fatty acids is replaced with a nitrogenous base
proteins cotain elements contain elements carbon hydrogen oxygen nitrogen sometimes sulfur
proteins made of very complex made of amino acids
polypeptide has has more than 20 amino acids
peptide made of made of less than 20 amino acids
protein is and is made of is a long polypeptide (at least 200 amino acids)
fibrous proteins show show little / no folding - strong tough with keratin eg hair nails feathers
globular protein shows lots of folding, rounded shapes, eg albumen or enzymes
sources of protein are fish eggs nuts meat dairy beans
Created by: jadcock
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