Disaccharides & Polysaccharides. 0.0 / 5 ? BiologyBiological molecules, organic chemistry and biochemistryASAQA Created by: meganbradfield1Created on: 23-03-16 17:25 Glucose + Glucose = ? Maltose 1 of 12 Glucose + Fructose = ? Sucrose 2 of 12 Glucose + Galactose = ? Lactose 3 of 12 What is a condensation reaction? A molecule of water is removed to join together 2 monosaccharides. 4 of 12 How is a glycosidic bond formed? Through a condensation reaction. 5 of 12 What is hydrolysis? Adding a molecule of water to a disaccharide to break the glycosidic bond. 6 of 12 What is the test for starch? Iodine test (iodine indicator will turn black/blue if starch present) 7 of 12 What is the test for non reducing sugars? Benedict's test 8 of 12 Why is sodium hydrogencarbonate solution added to the mixture in Benedict's test for non reducing sugars? To neutralise the HCL. 9 of 12 What is added to the mixture in Benedict's test for non reducing sugars? HCL. 10 of 12 What must you do to make sure the solution is alkaline in Benedict's test for non reducing sugars? Test the pH. 11 of 12 What colour will the reagent turn if a non reducing sugar is present in Benedict's test for non reducing sugars? Orange/brown. 12 of 12
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