Research Question: Effects of pH on amylase activity Introduction: Amylase is an enzyme that is in human’s saliva as well as the pancreas. Enzymes are biological catalysts that speed up a chemical reaction. They break down complex molecules into simple ones. In this case‚ amylase converts starches (complex molecule) into simple sugars. That is why foods like potatoes for example‚ may taste sweet to us‚ because they contain starch. The optimum pH for pancreatic amylase is the pH of 7. In
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catalysts that speed up chemical reactions‚ without being used up or changed. Catalase is a globular protein molecule that is found in all living cells. A globular protein is a protein with its molecules curled up into a ’ball’ shape. All enzymes have an active site. This is where another molecule(s) can bind with the enzyme. This molecule is known as the substrate. When the substrate binds with the enzyme‚ a product is produced. Enzymes are specific to their substrate‚ because the shape of their active
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of ATP‚ Adenosine Triose Phosphate. This occurs by converting glucose into pyruvate via glycolysis. Pyruvate is then transported into the mitochondrial matrix via active transport. Numerous reactions‚ catalyzed by a multi enzyme complex then occur‚ where the pyruvate is decarboxylated as shown in the reaction below. Pyruvate + NAD* + CoA ? acetyl CoA + reduced NAD + Carbon Dioxide This experiment shall be carried out via the manometric technique‚ where there are two different environments with
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Investigating the effect of pH on amylase activity This practical allows you to: * discover how pH affects the rate of an enzyme controlled reaction * evaluate the experimental procedure Procedure SAFETY: Follow your teacher’s instructions for handling the solutions. Wear eye protection when handling the iodine solution. Investigation * Place single drops of iodine solution in rows on the tile. * Label a test tube with the pH to be tested. * Use the syringe to place
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into How the Concentration of a Reactant Can Affect the Rate of Reaction Aim To plan an investigation that allows me to measure the effect of increasing the concentration of a reactant on the rate of reaction. With the results generated‚ it is also hoped to draw accurate conclusions and explain the results using scientific knowledge. Introduction Some reactions are fast‚ for example neutralisation or burning magnesium in air to produce magnesium oxide. However‚ other reactions can be slow‚
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The Effect of Temperature on Animal and Fungal Amylase’s Ability to Breakdown Starch. Abstract This experiment was designed to test the reaction of the enzyme amylase at various temperatures. There were two different kinds of amylase being tested‚ one was fungal amylase also known as aspergillus oryzae and human amylase. The changes in temperature effect the rate at which an enzyme and a substrate collide. When the temperature is too high the active site changes shape or denatures‚ once this
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Objective To investigate the effect of carbon dioxide concentration on the rate of photosynthesis Introduction Photosynthesis is a process that is essential for every living organism. Organic substances‚ such as glucose‚ are made from carbon dioxide and water by light energy from the sun. The light energy is absorbed by chlorophyll and converted to chemical energy. During the process‚ oxygen is released as a by-product. The rate of photosynthesis is affected by a few of factors‚ including
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9.5 Tests for halogens and halide Ions Test for halogen Test method Test observations Test chemistry and comments Chlorine gas Cl2 A pungent green gas. (i) Apply damp blue litmus. (Can use red litmus and just see bleaching effect.) (ii) A drop silver nitrate on the end of a glass rod into the gas. (i) litmus turns red and then is bleached white. (ii) White precipitate. (i) Non-metal‚ is acid in aqueous solution and a powerful oxidising agent (ii) It forms a small amount of chloride ion in water
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Interpretation of Data When looking at my results i can safely say that the change in HCl concentration does affect the rate of reaction with the Calcium carbonate pebbles. The relationship between the change in HCl and reaction rate can be seen in the graph and raw data table presented above. If you compare the lowest concentration with the highest concentration you’d be able to see that there is a very large contrast between their averages. The average gas production of 0.1M HCl was 0.00693 kPa/s
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Rate of Reaction Experiment Introduction : in this term in chemistry class I was learning about rate of reaction. As defined by the Britannica encyclopedia‚ a chemical reaction is a process where one or more substances (reactants) are converted to one or more different products because of the rearrangement of atoms of the reactants. For the reaction to occur‚ the particles must collide with each other and in order to succeed there must be enough energy for the collision because a collision with little
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