Investigating the effects of acid rain in the growth of cress seedlings IntroductionAcid rain is rain or any other form of precipitation‚ which is unusually acidic. It has harmful effects on plants‚ animals and buildings. Acid rain is mostly caused by human emissions of sulphur and nitrogen compounds which react in the atmosphere to produce acids. Acid rain can slow the growth of vulnerable forests and cause leaves and needles to turn brown and fall off. In addition‚ it depletes minerals from the
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The charts below lists a portion of the amino acids found in the Cytochrome C protein of several different organisms. Use the chart to compare the amino acid sequence in humans to the sequences of the other organisms listed. For each organism‚ identify any amino acid that is different or missing when compared to the amino acids in the human sequence. 1. 2. 3. 4. 5. 6. 7. 8. Click on the following link to open the activity chart: Amino Acid Sequences in CytochomeC Proteins.
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Write your name here Surname Other names Centre Number Candidate Number Edexcel IGCSE Chemistry Unit: 4CH0 Science (Double Award) 4SC0 Paper: 1C Wednesday 25 May 2011 – Morning Time: 2 hours Paper Reference 4CH0/1C 4SC0/1C You must have: Ruler Candidates may use a calculator. Total Marks Instructions black ink or • Usein the boxesball-point pen. page with your name‚ Fill at the top of this • centre number and candidate number. all • Answer
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What is it? Folic acid is a water soluble B vitamin. It is used during pregnancy to prevent Neural Tube Defects (NTD’s). NTD’s are birth defects of the brain‚ spine or spinal cord (MedlinePlus). They can be fatal depending on how bad the injury is especially if it is to the brain. Folic acid works with vitamin B12 in the formation of red blood cells. Deficiency in both folic acid and vitamin B12 causes a certain type of anemia known as macrocytic anemia. Macrocytic anemia is a type of anemia that
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Title: Estimation of Ascorbic acid Aim: To determine the ascorbic acid content of canned apple and orange juice To determine the volume of canned juice necessary to provide 75mg of Vitamin C Introduction: For the estimation of ascorbic acid‚ the method used involved the titration of the ascorbic acid‚ in the presence of a redox indicator 2‚6-dichlorophenol-indophenol (DCPIP) which acts as both an oxidant so as to oxidise the ascorbic acid to dehydroascorbic acid‚ and it acts as an indicator
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WEB BASED INFORMATION SYSTEM OF MUNICIPALITY OF ANGADANAN Institute of Information and Communication Technology ISABELA STATE UNIVERSITY Echague‚ Isabela Presented to: DR. QUENNIE JOY B. MESA In Partial Fulfillment Of the Academic Requirements for the Degree of BACHELOR OF INFORMATION TECHNOLOGY (BSIT) By: Grant Elison U. Erang Chapter I INTRODUCTION 1.1. Project Context A web based application is the ultimate way to take advantage of today’s technology to enhance organizations
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Proposal Report: Acid Violence in Bangladesh Background: Acid throwing on women and girls are on the rise in Bangladesh. Of all the gender-based violence directed at women‚ one of the most horrific is acid attacks. Acids are used to disfigure and sometimes kill women and girls. Reported reasons for the acid-throwing attacks include the refusal of an offer of marriage‚ dowry disputes‚ domestic fights‚ and disputes over property.. For the last few years‚ it has been on the rise in
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Abstract In this experiment paper chromatography was used in order to identify two unknown amino acids using eight known amino ones. The two unknown ones were identified by comparing the distance they travelled up the chromatography paper and their Rf values to the corresponding values of the other eight known amino acids. The unknown amino acids identified were Glycine and Methionine. Introduction Proteins in cells are important in many ways. There are different types of proteins such as
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Distinguished ladies and gentlemen. Acid rain is becoming a widespread problem around the world. The amount of acid in rain has dramatically increased in the past decade in certain areas like America and Europe by 70%. How is it caused? It is formed by the chemicals in the process of burning fossil fuels mixing with the moisture in the Earth’s atmosphere. Acid rain come in two forms‚ wet and dry. Dry deposition‚ a more accurate term for acid rain‚ can appear to be snow‚ hail or other dry particles
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Amino acids are important building blocks; they play an essential role in the formation of proteins and as intermediates in metabolism. Amino acids can serve as cell signaling molecules and can regulate gene expression. An optimal amount of amino acids is essential for health. There are over 500 amino acids‚ however only 20 are commonly found. Amino acids all have an amine functional group and a carboxylic acid functional group. They differentiate from each other in their side chains. Only 10 of
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