Enzymes
1.4 Biological reactions are regulated by enzymes.
(a) Metabolism is a series of enzyme controlled reactions. The protein nature of enzymes. Enzymes may act intracellularly or extracellularly. Active sites interpreted in terms of three dimensional structure, theory of induced fit as illustrated by lysozyme.
(b) The meaning of catalysis; the lowering of the activation energy. Influence of temperature, pH, substrate and enzyme concentration on rate of activity. Inactivation and denaturation. The need for scientific method in carrying out experiments and investigations.
(c) The principles of competitive and non competitive inhibition (references to reversible and irreversible action not required).
1.5 Medical and industrial applications of enzymes.
(a) The importance of immobilised enzymes. Industrial processes utilise immobilised enzymes enmeshed in an inert solid support so allowing enzyme reuse and improving stability.
(b) Biosensors and their use giving rapid, accurate and sensitive diagnosis in medicine as illustrated by glucose oxidase testing of blood for diabetes.
(a) Metabolism is a series of enzyme controlled reactions. The protein nature of enzymes. Enzymes may act intracellularly or extracellularly. Active sites interpreted in terms of three dimensional structure, theory of induced fit as illustrated by lysozyme.
(b) The meaning of catalysis; the lowering of the activation energy. Influence of temperature, pH, substrate and enzyme concentration on rate of activity. Inactivation and denaturation. The need for scientific method in carrying out experiments and investigations.
(c) The principles of competitive and non competitive inhibition (references to reversible and irreversible action not required).
1.5 Medical and industrial applications of enzymes.
(a) The importance of immobilised enzymes. Industrial processes utilise immobilised enzymes enmeshed in an inert solid support so allowing enzyme reuse and improving stability.
(b) Biosensors and their use giving rapid, accurate and sensitive diagnosis in medicine as illustrated by glucose oxidase testing of blood for diabetes.
Powerpoint used in lessons
From the WJEC board
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Click the link below for all powerpoints and worksheets used in lessons 2012-2013 |
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Shell students explain the lock and key model |
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