Metabolic chemistry - Our digestive system and ENZYMES - their structure, function and optimum conditions of these amazing molecular biological catalysts, and enzyme reaction investigations

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See also Enzymes and Biotechnology

(GCSE/IGCSE chemistry notes)

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Sub-index for enzymes and digestive system pages

1. Introduction - Metabolism, what are enzymes? why so important in living system?

2. How do enzymes work? 'Key and lock' mechanism theory - supported by scientific evidence

3. Effect of changing concentration of the substrate for an enzyme catalysed reaction?

4. Effect of changing pH - What is the optimum pH of an enzyme catalysed reaction?

5. Effect of temperature - What is the optimum temperature for an enzyme catalysed reaction?

6. Introduction to methods of measuring enzyme activity (see 7. and 8. for method details)

7. Method 1. A method of measuring the rate of product formation from an enzyme reaction - the decomposition of hydrogen peroxide by the enzyme catalase - collecting oxygen gas - investigating the effect of changing pH, temperature and concentration

8. Method 2. A colour change method of measuring the reduction of substrate concentration in an enzyme reaction - the starch to maltose reaction - effect of pH, temperature and concentration changes

includes Using a colorimeter to follow the reaction using a colour intensity change

9. Details of how the digestive system works and the role of gut bacteria and fungi (then 10.)

10. A summary of the human body's enzyme production sites and the digestive system

11. Enzymes and digestion - big protein/carbohydrate/fat molecules to small molecules!

12. Enzymes - synthesis of carbohydrates/proteins/lipids - small molecules to big molecules!

13. Doc Brown's unoriginal bread recipe! - excellent example of domestic enzyme technology!

14. Enzymes and Biotechnology (GCSE/IGCSE level chemistry notes)

See also Surfaces for the exchange of substances in animal organisms (includes small intestine)

IGCSE revision notes structure and function of enzymes KS4 biology Science notes on structure and function of enzymes GCSE biology guide notes on structure and function of enzymes for schools colleges academies science course tutors images pictures diagrams for structure and function of enzymes science revision notes on structure and function of enzymes for revising biology modules biology topics notes to help on understanding of structure and function of enzymes university courses in biological science careers in science biology jobs in the pharmaceutical industry biological laboratory assistant apprenticeships technical internships in biology USA US grade 8 grade 9 grade10 AQA GCSE 9-1 biology science notes on structure and function of enzymes GCSE notes on structure and function of enzymes Edexcel GCSE 9-1 biology science notes on structure and function of enzymes for OCR GCSE 9-1 21st century biology science notes on structure and function of enzymes OCR GCSE 9-1 Gateway  biology science notes on structure and function of enzymes WJEC gcse science CCEA/CEA gcse science

 Doc Brown's Biology exam study revision notes

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