Title: Preparation and Assay of Phenolase and Peroxidase from Sweet and Irish Potato Aim To design and conduct an experiment to demonstrate the presence of enzyme activity in the preparation provided. To examine the effect of the inhibitors provided. To test whether the other phenolic substrates provided can be oxidized by the enzyme preparation. To test for the presence of peroxidase activity in the enzyme preparation. To test the effect of the inhibitor provided on peroxidase activity
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Study guide Exam 1 Ch 1-5 CH 1 Overview‚ what is evolution‚ what is biology‚ what is life Evolution scientific explanation for: the unity and diversity we see in various organisms the suitability of organisms to their environments is evolution Hierarchy – molecules‚ cells‚ tissue‚ organ‚ organisms‚ populations‚ communities‚ ecosystem‚ biosphere Emergent properties – zooming from molecular level out to see function Reductionism (complex to simple) and Systems Biology (dynamic) Organisms
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Element: Simplest form of matter to have unique chemical properties. Atom: The smallest particles with unique chemical identities. Nucleus: Center of an atom (composed of protons and neutrons). Proton: Have a single positive charge (+1). Neutron: Have no charge. Electron: Tiny particles with a single negative charge and very low mass (-1)/determines chemical bonding properties of an atom. Atomic Number: Number of protons in the nucleus. Atomic Mass: Approximate number of protons and neutrons
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Air Pollution in Hong Kong Chemistry Project the Written Report 1.Introduction 3 2.Sources of Air Pollution 3 - 7 1.Vehicles 4 - 5 1. Pollutants produced by vehicles 4 2. Reasons why pollutants are produced 4 3. Impacts of the pollutants from vehicles 4 - 5 4. Method to eliminate pollutants 5 2.Power Stations 6 - 7 1. Pollutants produced by power stations 6 2. Reasons why pollutants are produced 6 3. Impacts of the pollutants from power stations 6 4. Methods to eliminate
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On the other hand‚ the acidic compounds are the carboxylic acids and the phenols. The carboxylic acids have the general formula of The functional group‚ is called the carboxyl group (carbonyl + hydroxyl). Further‚ phenols are commonly known carbolic acids. The presence of the hydroxyl groups in the molecules of phenols means that phenols are like alcohols in being able to form strong intermolecular hydrogen bonds. This hydrogen bonding causes phenols to be associated and‚ therefore
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In biology‚ there are four major biological macromolecules that are found in the cell‚ carbohydrates‚ lipids‚ nucleic acid‚ and proteins. Biological macromolecules are also known as organic molecules. Biological macromolecules are very large molecules that are of a key importance to living organisms. Most biological macromolecules are built by joining smaller molecule subunits. Carbohydrates are large groups of organic compounds found in foods such as sugars‚ starches‚ glucose‚ fructose‚ galactose
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proteins in the diet. Milk contains three kinds of proteins: caseins‚ lactalbumins‚ and lactoglobulins‚ all of which are globular proteins. The main protein in milk is casein. Casein is a phosphoprotein which has phosphate groups attached to the hydroxyl groups of some of the amino acids side-chains. Casein exists in milk as a calcium salt‚ calcium caseinate. It is actually a mixture of three similar proteins‚ alpha‚ beta and
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Acetylsalicylic Acid (Aspirin) Synthesis Telow‚ AJV Sumicad‚ CJ‚ Tavanlar‚ EMMT‚ Chem 40.1‚ Institute of Chemistry‚ University of the Philippines Los Baños I. Introduction Organic synthesis is the process where a desired organic compound is constructed or prepared from commercially available materials. The objective of organic synthesis is to design the simplest synthetic routes to a molecule. Aspirin‚ also known as acetylsalicylic acid is as salicylate drug often used as analgesic
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I will be talking about how water can reach a new pH level by interacting with soil. If water has a pH that is too high or too low‚ it can be life threatening to aquatic species and can corrode metal structures. After finding this out‚ I decided to test if water could reach an extreme pH just by interacting with soil around it. The question for this experiment therefore became the following. Will interaction with soil change the pH of water? I hypothesized that if water interacts with soil for three
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and Purification of Acetylsalicylic Acid (ASA or Aspirin) Background Salicylic acid is a phenol as well as a carboxylic acid. It can therefore undergo two different types of esterification reactions‚ creating an ester either with the hydroxyl or with the acid. In the presence of acetic anhydride‚ acetylsalicylic acid (aspirin or ASA) is formed. Correspondingly‚ an excess of methanol will form methyl salicylate‚ which is also an analgesic. In this experiment‚ we shall use the former
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