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National Biology

National Biology. Protein and Enzymes e: Breakdown reactions. Recap. Complete Quiz-Quiz-Trade activity. What are we learning today?. We are learning to: Describe what is meant by a breakdown reaction Recognise a breakdown reaction in diagrammatic form

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National Biology

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  1. National Biology Protein and Enzymes e: Breakdown reactions

  2. Recap • Complete Quiz-Quiz-Trade activity

  3. What are we learning today? We are learning to: • Describe what is meant by a breakdown reaction • Recognise a breakdown reaction in diagrammatic form • State the name of an enzyme involved in a breakdown reaction • State the test for a reducing sugar Success criteria: • Breakdown – large molecules broken to make smaller molecules • Examples of breakdown enzymes • Benedicts solution blue to brick red

  4. water oxygen catalase Breaking down reactions • In this reaction, catalase breaks down hydrogen peroxide into water and oxygen. • When enzymes are used to break things down it is called DEGRADATION hydrogen peroxide

  5. amylase starch maltose Example of a degradation reaction • Starch can also be degraded to simple sugar by the enzyme amylase.

  6. Experiment • Aim: to break down starch into maltose using the enzyme amylase • To test to see if the reaction has been successful the Benedicts test will be carried out

  7. Summary • Amylase breaks down starch into maltose • Benedict’s solution is a test for reducing sugars such as maltose • Benedict’s solution changes colour from blue to brick red in the presence of maltose

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