• Activity of a Protease
     The Activity of a Protease (Trypsin) Introduction Enzymes catalyze reactions by creating alternate reaction mechanisms whose transition states are more thermodynamically stable than uncatalyzed reactions (Berg et al., 2002; UBC Department of Microbiology and Immunology, 2006). Increased...
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  • Ccea as Biology Coursework: an Investigation to Measure the Percentage Light Transmission Through a Solution in Which Jelly Cubes Were Immersed over a 24 Hour Period
    for pepsin is when the buffer has a pH of 2. Trypsin is an enzyme that works in the small intestine and has an optimum pH between pH 7 and 8 or in neutral conditions. From our graph it can be seen that the lowest mean percentage light transmission for trypsin is when the buffer has a pH of 8. C2 and...
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  • How the pH of Trypsin and Pepsin affect light transmission
    Interpretation From the graph the enzyme Trypsin has 51% light transmission at pH 2. At pH 9 the Trypsin has 39% light transmission. Between pH 2 and pH 9 the percentage of light transmission decreases at a steady rate, until it reaches pH 8 where there is a steep increase...
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  • Behavior of Proteins
    rate of reaction in organisms by factor up to 10^20 (globular proteins) Nonenzymatic catalyst- enhance by 10^2 -10^4 Ribozymes- acts for catalytic activity in RNA’s Kinetics versus Thermodynamics Standard free energy change- difference between the energies of the reactants (initial state) and energies...
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  • Investigating how pH effects the enzyme trypsin acting on coloured gelatin
     Interpretation and Evaluation of Results Interpretation: The results from the experiment determining the effects of pH on enzyme activity show that as the independent variable, pH, increases the dependent variable, percentage transmission, decreases. This is shown in the results as at the lowest...
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  • Biology
    to help crop growth contain urea. Although some crop plants can absorb ammonium ions, most obtain their source of nitrogen as nitrate ions. The activity of urease can be measured by following the increase in pH as ammonia is produced in the reaction. A student was provided with urease extracted from...
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  • An Investigation Into the Effects of Temperature on Enzyme Action
    An investigation into the effects of temperature on enzyme action An enzyme is a biological catalyst that speeds up the rate of reaction in certain biological functions. They play a vital role in many aspects of human physiology and are necessary for the functioning of a number of systems, for example...
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  • Enzyme Regulation
    protein. The arrangement of molecules on the enzyme produces an area known as the active site within which the specific substrate(s) will "fit". It recognizes, confines and orients the substrate in a particular direction. Enzymes function under very specific conditions including temperature and pH and are...
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  • All About Enzymes
    on a substrate, an enzyme must contain an active site. The active site is the area on the enzyme that allows the substrate and enzyme to fit together. The amino acids that are present in the active site are linked together in a certain unique order or sequence. The way that enzymes and substrates fit...
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  • Recognise the Characteristics of Enzymes and Their Involvement in Physiological Processes
    amino acids in the proteins and produces short chain polypeptides. It also kills any pathogen that enters the body through food. Pancreas produces trypsin as a proenzyme trypsinogen. It works on polypeptides and proteins producing short chain peptides. It is also acts as an activating enzyme for other...
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  • Enzyems
    The Effect Of Enzyme Concentration On Enzyme Activity The pancreatic duct in individuals who have cystic fibrosis frequently becomes blocked, reducing or preventing the release of pancreatic enzymes into the small intestine. The aim of this activity is to investigate the effect of a reduction...
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  • Bio Questions
    outside of a cell The diagram shows the action of an enzyme on a substrate. X represents [pic] A enzyme C product of reaction B substrate D enzyme-substrate complex The following statements is true about the characteristics of enzymes except ...
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  • Biology and Physic Experiment
    have optimum activity at a neutral pH and at body temperature. Enzymes are also very specific – they only act on one substrate or one class of related substrate molecules. The reason for this is that the active site of the enzyme is complementary to the shape and polarity of the substrate. Typically...
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  • Biochemistry
    enzyme that regulates diverse target proteins. -Covalent Modification is a means of Regulating Enzyme Activity: The covalent attachment of a molecule to an enzyme or protein can modify its activity. A donor molecule provides the functional moiety being attached. Most modification are reversible. Phosphorylation...
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  • Corn Gluten Hydrolysis by Alcalase: Effects of Process Parameters on Hydrolysis, Solubilization and Enzyme Inactivation
    D. KILIÇ APAR and B. ÖZBEK, Corn Gluten Hydrolysis by Alcalase: Effects of …, Chem. Biochem. Eng. Q. 22 (2) 203–212 (2008) 203 Corn Gluten Hydrolysis by Alcalase: Effects of Process Parameters on Hydrolysis, Solubilization and Enzyme Inactivation D. Krlrç Apar and B. Özbek* Yrldrz Technical...
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  • Enzymes
    stereo-specific • Enzymes reduces activation energy • In any 1 enzyme catalyzed reaction: o Enzyme (E) – active site, catalytic site o Substrate (S) o Product(s) (P) o Formation of:  E-S complex  transition state  E-P complex • Structural...
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  • Enzyme Mechanism
    Isomerases catalyze intramolecular rearrangement. Ligases catalyze reactions in which two molecules are joined. 5. 6. Two Models for Enzyme-Substrate Interaction Induced Conformational Change in Hexokinase Coenzymes Example of a Coenzyme Involved in Oxidation/Reduction Reactions Hydr...
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  • Biochem Study Guide for Test 2
    metabolic reactions: ability to exert kinetic control over thermodynamic potentiality * May use cofactors * Form metabolic pathways * Have substrate and reaction specificity * Present in small amount since NOT consumed by reaction * Integrate metabolic (anabolic and catabolic) functions...
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  • research
    Trypsin http://en.wikipedia.org/wiki/Trypsin Function  In the duodenum, trypsin catalyzes the hydrolysis of peptide bonds, breaking down proteins into smaller peptides. The peptide products are then further hydrolyzed into amino acids via other proteases, rendering them available for absorption into...
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  • catalase experiement
    called the substrate of that enzyme. Most enzymes are named after the substrate on which they act by simply adding –ase to the root name of the substrate. A lipase then, would be an enzyme that acts on lipids, sucrase on sucrose, and so forth. Many enzymes, such as chymotrypsin, trypsin and lysozyme...
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