The effect of enzyme concentration‚ substrate concentration‚ pH‚ and temperature on the enzyme catalase. Introduction: Enzymes are biological catalysts; proteins and RNA. They are required for most biological reactions and they are highly specific. Each enzyme has an active site. The active site is the spot on the enzyme where a substrate fits in. Substrates binds with enzymes through the active site. Enzymes‚ being highly specific‚ only fit with one certain substrate. Enzymes and substrates
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Relationship of Chromium (Cr) mobility in soil and pH value using Electrochemical Method Siti Khadijah C.O. 1‚ Sabariah A.2‚ 3Zuliziana S.‚ Jestin Jelani4‚ Nordila A.5 1‚3‚4‚5 Lecturer‚ Civil Engineering Department‚ Faculty of Engineering‚ Universiti Pertahanan Nasional Malaysia 2 Lecturer‚ Faculty of Civil Engineering Universiti Teknologi Mara‚ Selangor‚ Malaysia Email : sitikhadijah@upnm.edu.my Abstract: Heavy metal contamination may provide a better indication of the potential risk
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Nonbiological Material on the Reaction to a Changing pH Level This experiment was conducted to learn exactly how biological material responds to rising or dropping pH levels in comparison to how nonbiological material does. The dependent variable in this experiment was how the different materials react‚ and the independent variable was the type of material‚ biological or nonbiological. Tap water was the selected nonbiological material‚ and the generally known pH level for water is 7‚ or neutral. Potato homogenate
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Determining the Production of Glucose During Changes in Temperature and pH‚ and Manipulation of Specificity and Cofactors BIOL-1406-SL8 November 16‚ 2012 Abstract Enzymes are biological catalysts. They work by lowering the activation energy needed to initiate a chemical reaction. Enzymes work within an optimal temperature and optimal pH. Enzymes are highly specific for a single substrate. The Enzyme is usually much larger in size than the substrate it binds to. In some cases‚ an enzyme requires
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Consulting Chemists Institute Introduction The Consulting Chemists Institute was contracted by a local food manufacturer to determine if sodium benzoate‚ a common food preservative‚ undergoes significant chemical changes at the pH level encountered in the acidic environment of the stomach. Experimental Method Sodium benzoate was prepared by addition of an equimolar amount of aqueous sodium hydroxide (3 M‚ ~ 20 ml) to a benzoic acid (1.256 g‚ 10.3 mmol) /water mixture (10 ml). Benzoic
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“If you prick us do we not bleed? If you tickle us do‚ we not laugh? If you poison us do‚ we not die? And if you wrong us shall we not revenge?” Shakespeare made it clear for all of us .he made it clear that revenge is a natural human reaction just like laughing when we are tickled or bleeding when we are pricked. In Ph.D. Karyn Hall’s Article Revenge: Will You Feel Better? She supports Shakespeare’s claim “Revenge seems to be one of the deepest instincts we have. Who hasn’t said‚ "I hope he gets
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The effect of environmental factors such as temperature‚ osmotic pressure‚ oxygen concentration and pH on microbial growth and survival Abstract: Microbial growth can be affected by different environmental factors such as temperature‚ osmotic pressure‚ oxygen concentration and pH. Six experiments were carried out in this report testing for microbial growth against different environmental factors. Good aseptic techniques were used to prevent contamination‚ resulting in a uniform set of results
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We tested the Comparative pH ‚ Carbon Acid and Glucose content of different soft drinks. Since soft drinks like Coca-Cola‚ Royal and Sprite are common beverages that Filipinos like to drink‚ It is usually sold in a lot of stores and markets. (This beverages taste sweet and has a tangy feeling in your throat when drank.) Coca cola is a carbonated drink. Its content are Sucrose‚ Caffeine‚ Phosphoric Acid‚ Caramel color‚ and natural flavorings. We firstly tested the pH value of the different drinks
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monoprotic acids were determined with the aid of a buffer and pH meter. Experiment: This experiment was performed according to the procedures as provided in the Chemistry 111B laboratory manual: Po‚ Henry and Senozan‚ N. "General Chemistry Experiments Chemistry 111B"‚ 8th Ed.‚ 2004 Hayden-McNeil Publishing‚ pp 80-88. To determine the dissociation constants of weak monoprotic acids (HX and HY)‚ a buffer was needed to calibrate the pH meter. According to the manual‚ all four solutions to the experiments
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LA SALLE GREEN HILLS Comparative Study Between the Bioplastic Properties of Agar-Agar (Gelidium amansii) and Potato (Solanum tuberosum) Starch Submitted by: Kyle Emmanuel A. David Rynno Gabriel Luis T. Garde Justin Carlo P. Gregorio Rufo Angelo M. Mauricio III Christian Michael A. Perreras II-B Submitted to: Miss Alvie Diaz Submitted on: January 30‚ 2012 ABSTRACT Bioplastic is a form of plastic derived from renewable biomass
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