IntroductionEnzymes are macromolecules that act as a catalyst, and it is a chemical agent that accelerates the reaction without being consumed by the feedback or outcomes (Campbell and Reece, 2005). After adjustment by enzymes, chemical movement through metabolic pathways will become terribly crowded because many chemical reactions take a long time (Campbell and Reece, 2005). In nature there are two types of reactions. The first is the catabolic reaction and the second is the anabolic reaction. Catabolic reactions are large molecules that are broken down into smaller molecules (Ahmed, 2013). Anabolic reactions are small molecules coming together to form larger molecules, such as polymerization (Ahmed, 2013). If you put all the reactions together, catabolic and anabolic is called metabolism (Ahmed, 2013). Basically, enzymes are protein molecules that can be composed of one or more multiple polypeptides (Ahmed, 2013). Enzymes can also have non-protein parts called cofactors and are attached to them (Ahmed, 2013). “If the cofactors are organic in nature they are called coenzymes” (Ahmed, 2013). For an enzyme catalyst to extend its reaction rate varies depending on factors such as temperature, pH, substrate concentration, enzyme concentration, and so on (Ahmed, 2013). The enzyme has five properties: the first is that the enzyme binds to the substrate, the second is that enzymes are substrate specific, the third is that the substrate binds an enzyme in the active site (Ahmed, 2013). The last two properties are “Enzymes are not consumed in a reaction” and “Enzymes work best at optimal temperature and pH” (Ahmed, 2013). Any particular study will have changes in the rate of the reaction due to the different... half of paper......acts with the factors and this causes them to react very similarly to how we expect them to react.ReferencesAlbery John W . and Knowles Jeremy R. (1976). "Evolution of enzymatic function and development of catalytic efficiency". Biochemistry. vol. 15, No. 25.Ahmed, S. 2013. Laboratory Manual of Principles of Biology. USA, Hobbes End publication: pages 21-30 (Ahmed, 2013). Chul-Won Park and Zipp Erik (2000). “The effect of temperature and pH on enzyme kinetics.” Introduction to biochemical engineering. Web (Chul-Won Park, 2000). Cleland WW (1975) "Partition analysis and the concept of net rate constant as tools in enzyme kinetics." Biochemistry. vol. 14, no. 14 (Cleland 1975). Reece Jane B., Urry Lisa A., Cain Michael L., Wasserman Steven A., Minorsky Peter V., and Jackson Robert B. (2005). “Chapter 8: An Introduction to Metabolism.” Campbell's Biology. Ninth edition. pp152-157.