following experiment details the effect of different concentrations of catalase on the production of oxygen and water through the breakdown of Hydrogen Peroxide. In this experiment paper disc where coated in varying concentrations of catalase‚ 0‚ 25‚ 50 75 and 100%. The time taken for the disc to float between two markers on the side of a glass was then recorded. This experiment demonstrates that the higher the concentration of enzyme used the greater the production of oxygen on the paper disc. The
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Activity One: 1. The two major variables that affect the rate of diffusion: a. The composition of the lipid bilayer (eg. more cholesterol‚ less permeability to polar substances) b. The structure of the molecule undergoing diffusion (eg. steric conformation‚ size‚ polarity‚ amount and strength of hydrogen bonding) 2. Urea was not able to diffuse through the 20 MWCO because the pores of the membrane were too small for the urea to pass through. The molecular weight of urea is 60.06 g/mol‚ over
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GUIDANCE ON THE DESIGN AND CONSTRUCTION OF SUSTAINABLE‚ LOW CARBON SUPERMARKET BUILDINGS REPORT V2.0 JUNE 2011 WWW.TARGETZERO.INFO The European operations of Tata Steel comprise Europe’s second largest steel producer. With main steelmaking operations in the UK and the Netherlands‚ they supply steel and related services to the construction‚ automotive‚ packaging‚ material handling and other demanding markets worldwide. Tata Steel is one of the world’s top ten steel producers. The combined
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Carbon Nanofibers Carbon nanofibers can simply be known as nanostructures with bonded carbon atoms that has a molecule composed entirely of carbon in shape of hollow sphere‚ ellipsoid or tube. The layers are usually wrapped up to form carbon nanotubes. Nanotubes are usually constructed with length-to-diameter ratio of up to 132‚000‚000:1. Basically‚ carbon nanofibers can be used very commonly in future as the technology for it is really taking its shape. It can be used for sensors‚ bone growth‚
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History books all over the wolrd. Bacon aided to some of the greatest‚ most useful scientific advances of all time that affect people today. Although Bacon’s contributions were majorly philosophical‚ he helped change the direction of scientific advances. He shifted the idea of using deductive syllogism‚ as proposed by Aristotle‚ to inductive reasoning from fact‚ axiom‚ to theorem. The scientific and philosophical contributions that Francis Bacon gave impact the world today. Bacon and Rene
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Abstract: This lab tests how temperature and pH affect how enzymes will function. The lab showed that temperature will denature an enzyme when past its optimal working temperature and won’t denature in cold temperatures‚ but have slowed molecular activity. pH will also have an affect on an enzymes efficiency‚ when out of optimal pH the enzyme will not function as it is supposed to and if to far out of the optimal pH the enzyme will change shape and no longer work. Enzymes also showed to be reusable
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Description To investigate the effect on caffeine on heart rate of water fleas and to understand the risk of high level consumption of caffeine to the health of the human circulatory system and nervous system. Preview Diagram 1: Chemical structure of caffeine Image source: http://ismaastricht.wikispaces.com/file/list The images above show the chemical structure of caffeine which has a chemical formula of C8H10N4O2. Caffeine was named by the International Union of Pure and Applied Chemistry
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"Explain the concept of homeostasis with reference to the control of heart rate‚ breathing rate‚ body temperature and blood glucose levels" P5 Homeostasis is where the body keeps a constant internal environment. This involves all the metabolic processes taking place In the body as well as the blood‚ tissue fluid and all the contents in the body ’s cells. There are a range of variables from heart rate to the blood glucose levels that the body will take into account. Negative feedback will occur
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Effect of Temperature ( C ͦ) on Enzyme Catalase Activity in potato Aim: To investigate the Effect of temperature (10‚ 37‚ 60) Celsius (C ͦ) on enzyme catalase activity in potato using 2% of hydrogen peroxide (H202) as the substrate measuring the height (cm) of oxygen gas (bubbles) and calculating the volume of oxygen bubbles produced (cm3) Introduction: Enzymes are biological catalysts that speed up metabolic reactions without being affected. They lower the activation energy needed to start
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Effect of Osmotic Stress and Temperature on Microbial Growth BIO 3400-002L – Microbiology Lab 1 Effect of Osmotic Stress and Temperature on Microbial Growth Luiz Felipe Isidoro ABSTRACT Evolution allowed primitive forms of life to develop proteins and enzymes that made it possible for life to evolve under environments with hostile conditions‚ such as high salt and heat. More specifically‚ some bacteria selected genes that code for peptides with stronger intermolecular forces‚ coping
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