CARBOHYDRATES, LIPIDS AND PROTEINS 0.0 / 5 ? BiologyCells, tissues and organsGCSEAQA Created by: LAUREN.FCreated on: 15-05-16 18:01 What is a complex carbohydrate? A long chain of simple sugar units bonded/linked together. 1 of 7 What happens to a protein molecule if it is heated? It changes shape and is denatured. 2 of 7 What results would you expect if you tested some egg white with a) iodine, b) Benedict's solution, c) Biuret solution? a) Iodine solution stays brown/orange. b) Benedict's solution would remain clear blue. c) Biuret solution would turn lilac. 3 of 7 Name the area of a protein where other molecules can fit. The active site. 4 of 7 What is meant by the term 'denatured'? Changing the shape of the active site so the enzyme can no longer speed up a reaction. 5 of 7 What is meant by 'digestion'? Breakdown of large insoluble molecules to smaller soluble molecules. 6 of 7 Which enzyme is used to convert glucose into fructose? Isomerase. 7 of 7
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