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| style="height:20px; width:300px; text-align:center;" |This [[Biuret]] has turned purple, indicating protein is present.
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==Key Stage 4==
===Meaning===
[[Protein]]s are large [[molecule]]s made from [[Amino Acid|amino acids]] that are used by our bodies for growth and repair.
===About Proteins===
: [[Protein]]s are broken down by our [[Digestive System|digestive systems]] into [[Amino Acid|amino acids]] which are then transported around the body by our [[blood]].
: [[Cell (Biology)|cells]] build new [[protein]]s from [[Amino Acid|amino acids]] in a process called [[Protein Synthesis|protein synthesis]] which takes place at the [[ribosome]]s in [[Cell (Biology)|cells]].