Free Enzymes Essays and Papers

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  • Enzyme

    1727 Words  | 7 Pages

    The plot of enzyme activity Vs. pH is often "bell shaped" since two different amino acid groups of the enzyme are being titrated to different states of ionization at the different pH values. This means that only one of the two possible ionization states of the amino acid side chain is effective in enzyme catalysis - in other words, if an acidic side chain like Glu is involved in catalysis, it probably only works when it is ionized; since Glu side chain carboxylic acid groups have a pK around pH 5

  • Enzymes

    1028 Words  | 5 Pages

    The structure of the enzyme is mainly dependent on the active site and variable groups. Extreme temperatures or extreme pHs can alter the structure of an enzyme. Enzymes function to lower the activation energy to break the bonds. They achieve this by putting stress and pressure on the bonds or creating a microenvironment for the substrate. Enzymes are regulated by inhibitors or activators and can be inhibited by the products of the reaction, called feedback inhibition. Enzymes are catalytic proteins;

  • Background On Enzymes

    1031 Words  | 5 Pages

    Background On Enzymes Enzymes are biological catalysts. They speed up the chemical reactions which go on inside living things. Without enzymes reactions would be so slow that eventually life would grind to a halt. There are many different types of enzymes and each of them is extremely efficient at doing their job. For example, some of the reactions which take place in our cells, e.g. the liver, produce a by-product called hydrogen peroxide. Hydrogen peroxide is very poisonous so it must

  • Enzymes in Industry

    1685 Words  | 7 Pages

    Enzymes in Industry Enzymes are described as chemical a catalyst that is they speed up the rate of reaction. Enzymes have enormous potential in the commercial world. They are cheap to use in industry and they do not need high temperatures to work. They work at neutral PH and normal atmospheric pressure. This reduces the costs of fuel in industry and are energy saving. Also, enzymes can be reused. This means that they are needed in relatively small amounts in comparison with Inorganic

  • Investigation of Enzymes

    546 Words  | 3 Pages

    Investigation of Enzymes Aim === To find out how enzymes are affected by temperature. ==================================================== Method ------ . Mix starch and amylase together to get a solution . Place it in 6 Beakers . Place this mixture in 6 Electric baths at different temperatures. E.g. 20,25,30,35,40,and 45 . Use a pipette to put 2 drops of the solution at 20oC in a spotting tile . Then add two drops of Iodine (to test if starch is present-the

  • Enzymes Experiment

    527 Words  | 3 Pages

    Lab 5. Enzymes PART 1. The Introduction. Question #1: How does the concentration of substrate affect the reaction rate? 1)Hypothesis: An increase in the amount of substrate will increase the reaction rate to an extent. 2)Supporting Argument: An enzyme is a catalyst, in this case a protein, that increases the rate of a reaction without being used up. A substrate is the area of a reactant that an enzyme attaches to in order to be modified into the product of the reaction. Once a substrate is converted

  • The Use Of Enzymes

    1325 Words  | 6 Pages

    To investigate the amount of oxygen foam (cm) produced by the enzyme catalase when it breaks down hydrogen peroxide in the animal (liver, milk, honey) and plant cells(potato, purple cabbage) into oxygen and water Motivation: The reason I chose this topic was because I wanted to find out what enzymes are used for, to what extent they are used in our bodies and, how vast are their applications in food industries. Enzymes have been used in research, mainly because of their ability to facilitate reactions

  • Enzymes Essay

    550 Words  | 3 Pages

    An enzyme is often known as biological catalysts. It acts a substance which speeds up the rate of a chemical reaction but remains unchanged through the process. It works by lowering the activation energy (the amount of energy required to initiate a chemical change) required for a reaction. Enzymes are proteins that are vital to the body because they act as effective catalysts and play an important role within body cells. Enzymes are proteins that are folded into a complex three-dimensional shape

  • Enzymes Experiment

    1118 Words  | 5 Pages

    Enzymes Experiment Introduction Enzymes are biological catalysts that promote some of the thousands of chemical reactions that occur in living cells. They are large molecules that have a unique three-dimensional structure that allows it to react with a specific substrate. It is hypothesized that pH levels out of the normal range found in cells would denature the enzyme, slowing the enzyme's reaction rates. Hydrogen Peroxide (H2O2) is a poisonous chemical that is continually being

  • Investigation on Enzymes

    730 Words  | 3 Pages

    Investigation on Enzymes Introduction Sam and Sarah planned and carried out an experiment to see the effect of pH on the activity of the enzyme amylase which breaks down starch into sugar. They decided to investigate 5 different pH's 2,4,6,8 and 10. 1. The used a measuring cylinder to measure out 5cm3 of starch and placed it in a test tube. They then added acid or alkali until they got to pH2. They checked this using indicator paper 2. They placed the test tube in a rack on the bench