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A [[carbohydrate]] is a [[nutrient ]] in our [[diet]]s that is used in the body for [[respiration]].

: '''Carbohydrates''' can be split into three groups. [[Monosaccharide]]s which are simple [[sugar]]s, [[disaccharide]]s which are made from two groups[[monosaccharide]]s [[bonds|bonded]] together and [[polysaccharide]]s which are many [[monosaccharide]]s [[bonds|bonded]] together. ===Monosaccharides=======Monosaccharide Molecules====: [[Monosaccharide]]s are all [[isomer]]s with the [[Chemical Formula|formula]] C₆H₁₂O₆.The three main [[monosaccharide]]s are:*[[Glucose]]*[[Fructose]]*[[Galactose]] ====Testing For Monosaccharides====: [[Monosaccharide]]s can be detected with the [[Benedict's Test]].: [[Disaccharide]]s cannot be detected with the [[Benedict's Test]] unless you first react it with dilute [[Hydrochloric Acid|hydrochloric acid]].=====Method=====: 1. A sample of food is dissolved in water.: 2. The solution is added to blue Benedict's solution in a boiling tube.: 3. The solution is kept at 90°C for up to 10 minutes.: 4. A colour change indicates the presence of glucose or fructose. If they are present the solution will eventually turn brick red or brown.  ===Disaccharides=======Disaccharide Molecules====: [[PolysaccharideDisaccharide]]s are all [[isomer]]s with the [[Chemical Formula|Complex Carbohydrateformula]] C₆H₁₂O₆.The two [[Disaccharide]]s like you might know are:*[[Sucrose]] - Found in white [[starchsugar]] which is made of one [[glucose]] [[molecule]] and one [[fructose]] [[molecule]] [[Bonds|bonded]] together.*[[Lactose]] - A [[sugar]] found in [[milk]] made from one [[glucose]] [[molecule]] and one [[galactose]] [[molecule]]. ===Polysaccharides===: [[Polysaccharide]]s are all long chains of simpler [[monosaccharide]]s [[bonds|bonded]] together.Some [[polysaccharide]]s you should know are very important :*[[Starch]] - An essential [[nutrient]] in our [[diet and ]]s which provides us with [[energy]].*[[Cellulose]] - An indigestible [[polysaccharide]], often referred to as [[fibre]], found in the [[SugarCell Wall|Simple Carbohydratecell wall]] of [[plant]]s called .*[[sugarChitin]] - An indigestible [[polysaccharide]] found in the [[Cell Wall|cell wall]] of [[fungi]].===Starch=======Starch Molecule====: [[Starch]] is made of hundreds of [[glucose]] [[molecule]]s that can be harmful if we eat to much [[Bonds|bonded]] together.{| class="wikitable"|-|[[File:StarchMolecule.png|center|600px]]|-| style="height:20px; width:600px; text-align:center;" |A starch molecule made of themmany smaller glucose molecules.|}