Enzymes

Enzymes are proteins serving as catalysts that carry out thousands of chemical reactions that occur in living cells. A catalyst speeds up a chemical reaction by changing the rate of the reaction without being consumed by the reaction. In an enzyme - catalyzed reaction the substance acted upon that is called substrate binds to the active site of the enzyme. An enzyme-substrate complex is formed held by hydrophobic interactions, hydrogen bonds and ionic bonds. The substrate is converted to…

experiment, the effect of environmental conditions on enzyme functions was tested. The materials needed for the experiment was an amylase enzyme to lower the activation energy of the reactions, starch solutions of pH 3,4,5,6,7,and 8, these provided different concentrations to project various environmental conditions. In addition, Iodine solution, and a spectrophotometer were needed. Each cuvette contained a specific pH concentration. Then the enzyme extract was added to each pH concentration…

Enzymes are known as catalysts that cause reactions to occur more rapidly by lowering the reaction’s activation energy. A reaction’s activation energy is known as the minimum amount of energy required to get a chemical reaction started1. In order for cells to efficiently manage thousands of different chemical reactions, they make use of biological catalysts. Without these catalysts, biological reactions would not be able to proceed at a proper rate necessary to maintain life. Most, but not all,…

catalyzed by enzymes. Without enzymes, most reactions necessary for the maintenance of life would occur so slow that they would not occur at all under the regular temperature and pressure conditions (Cooper). Enzymes act as catalysts that accelerate the rates of reactions by lowering the energy of activation. In an enzymatic reaction, the substrate (which is the reactant that an enzyme acts on) binds to the active site (which is the region on the enzyme where the substrate binds to) of the…

Enzymes are biological catalysts that speed up chemical reactions and are inexhaustible. They can increase the rate at which reactions occur by up to a factor of 10^19. The material that is being acted on by the enzyme is called a substrate. Enzymes work because they can bind to the transition state better than the substrate, which lowers the activation energy causing the speed of a reaction to accelerate. The enzyme combines with a substrate at the enzymes active site which creates the enzyme…

needed to start a chemical reaction, activation energy, comes from enzymes. Enzymes (almost always proteins) are organic catalysts that help speed up the rate of reactions and allow the reactants to get the most out of the energy available. They do this without changing the reaction. Without an enzyme, then many chemical reactions may not occur because the activation energy could be too high to be reached without the help of an enzyme. For example, table salt, or sucrose, could sit for years…

Practical 3: Enzyme Activity (2.5) Research Question: How does the change of pH affect the rate of decomposition of hydrogen peroxide on the enzyme, catalase? Background Information: Enzymes are globular proteins, which are synthesised by cells in order to perform specific functions. These act as catalysts in chemical reactions and are considered a major factor in an organism as these reaction rates are required to be shortened in order to support life. Catalase is one of the most…

Enzymes: The Little Molecules That Bake Bread Krishna Patel Emily Buehler October 5, 2017 Scientific American Bio 181 September 28, 2012 Article Review 2 Science of Bread- Making Bread- making has…

fluid on the activity of an enzyme INTRODUCTION: There are several factors that may influence the activity of an enzyme to include temperature and the pH levels. In order to better understand how the pH level affects the actions of an enzyme, the experiment will introduce different foods with acids and bases through mixture of direct contact. OBJECTIVE: The objective of this experiment is to recognize how the introduction of an acid affects the activities of an enzyme. MATERIALS REQUIRED:…

functioning. Enzymes are catalysts that are used to speed up these reactions. If you take for example if a person was trying to get from Point A to Point B, there are two routes; one route where you have to go over a steep hill, which would take additional time or the other route is to go around the hill and get to Point B using less time. This example is an illustration of enzyme catalyst. They are what give reactions an alternative route. They allow reactions to occur faster however, enzyme…