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Biology-Practicals

Biology Practicals

QuestionAnswerAnswer2
Iodine Solution is used as a test for starch, giving blue-black colour when starch and iodine are mixed together (blank)
Benedict's reagent is used to test for reducing sugars. When they are mixed together and heated, a range of colours, incl. yellow, orange or brick-red will be produced if reducing sugars are present (blank)
Biuret reagent is used as a test for proteins, giving a violet colour when mixed with a protein (blank)
Sucrose is a non reucing sugar, which can be hydrolised into its constituents monosaccharides (glucose + fructose) using dilute hydrochloric acid or sucrase. Both glucose and fructose are reducing sugars which can then be detected using Benedict reagent.
Created by: 1sabelle
 

 



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