CIE IGCSE Biology Topic 5: Enzymes Revision - PMT.
Types of enzymes. a) Extracellular: Are produced within the cells but used outside the cells e. g. digestive enzymes. b) Intracellular: Are enzymes produced and used within the cells e. g. respiratory enzymes. Importance of Enzymes. They speed up the rate of chemical reactions that would otherwise be too slow to support life.
Enzymes are globular proteins used as biological catalysts, they speed up the rate of chemical reactions. The essential role of the enzyme is to provide an active site, which has a complimentary shape to the molecules that bind there. Substrates are converted to products through the formation of an enzyme-substrate complex.
A Level Biology Revision for AQA, OCR or Edexcel. Find A Level Biology past papers, worksheets and revision materials on Maths Made Easy.
Specimen and exemplar questions papers Specimen question papers are available for National 5, Higher and Advanced Higher qualifications. Exemplar question papers are available for Higher and Advanced Higher qualifications. Find them under 'Assessment support' of your subject pages.
Enzyme and Microbial Technology is an international, peer-reviewed journal publishing original research and reviews, of biotechnological significance and novelty, on basic and applied aspects of the science and technology of processes involving the use of enzymes, micro-organisms, animal cells and plant.
Flag this paper! In this lab we studied how the enzyme alkaline phosphatase (AP) activity was influenced by time, the change of temperature and how the enzyme was affected by different substrate and inhibitor concentrations.
Enzymes are able to reduce the activation energy of the reaction; the energy required to break bonds between the reactants, and form new bonds in the products, which allows more product to be formed. (Marieb and Hoehn, 2010, pp.51-53). Enzyme activity is affected by changes in the pH of their solution. For each individual enzyme, there is a.