CHEMICAL REACTIONS: ACID-BASE BUFFERS Short Overview Acids and bases represent two of the most common classes of compounds. Many studies have been done on these compounds‚ and their reactions are very important. Perhaps the most important reaction is the one in which an acid and base are combined‚ resulting in the formation of water (in aqueous solution) and a salt; this reaction is called neutralization. A buffer solution is a solution that contains both an acid and a salt containing
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area of DNA‚ deoxyribonucleic acid‚ helping on scientific research and most importantly as a tool for solving crimes. Before the usage of DNA‚ people only had shreds of evidence on the crime which could be detected by the naked eye. However‚ with the development of DNA detection technology‚ the police can identify or get some indication about the malefactor by collecting pieces of evidence that were impotent before; for example‚ hair‚ fingerprints and even blood (Travis‚ 1998). However‚ DNA testing
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M1: DNA • DNA - DNA are the chemical unit for genetic information in most organisms. - DNA are informational macromolecules that are used to store hereditary information that determines functional and structural characteristics of organisms. - In eukaryotes‚ the linear DNA is found primarily in the nucleus of cells. - In prokaryotes (e.g. bacteria)‚ there is one circular loop of double-stranded DNA in cytoplasm. • General Structure of DNA - The structure of DNA as a double helix made up
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Abstract The objective of this experiment was to observe multi-step purification of benzoic acid after performing the extraction from a mixture containing benzoic acid‚ cellulose‚ and methyl orange. Recrystallization was done to remove impurities from the sample. The amount of BA recovered during recrystallization is much less than the extracted amount of BA. The difference between the pure and impure samples was observed by comparison of melting points. It was found that impure samples will have
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BioLab3 DNA Structure and Function Lab Report Student Name: I. DNA Structure Define the following terms: Purines A colorless crystalline compound with basic properties‚ forming uric acid on oxidation. Pyrimidines A colorless crystalline compound with basic properties; a substituted derivative of this‚ especially the bases thymine and cytosine present in DNA. Nucleotides A compound consisting of a nucleoside linked to
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REVIEW QUESTIONS CHAPTER 1 1. Place the following terms in size order‚ from largest to smallest‚ based on the structures or concepts they represent: a. chromosome b.gene pool c. gene d. DNA e. genome Gene pool‚ genome‚ chromosome‚ gene‚ DNA 2. Distinguish between: a. an autosome and a sex chromosome b. genotype and phenotype c. DNA and RNA d. recessvie and dominant traits e. pedigrees and karyotypes f. gene and genome a. An autosome does
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DNA EXTRACTION FROM KIWI ISGR SCIENCE Aalah Yousif‚ Ella Sobek April 27‚ 2012 Background All living organisms (plants‚ animals‚ and bacteria) are made up of cells. Any cell consists of many parts but the parts that play the key roles are the nucleus‚ cell membrane‚ and cytoplasm. The nucleus is like the “brain” of the cell (that also contains DNA). The cell membrane is like a wall that guards the cell. And the cytoplasm is a jelly-like substance which contains other smaller organelles like
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HR Profession Map defines the HR profession‚ including the professional areas‚ the bands and the behaviours. I will also evaluate how the two core professional areas and two selected behaviours uphold the concept of “HR Professionalism”‚ by giving examples from the knowledge and activities at band 2. I will explain‚ with related examples‚ why HR professionals are required to manage themselves‚ groups and teams‚ manage upwards and across the organisation. CIPD HR Profession Map The CIPD
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Decoding the DNA of the Toyota Production system: The Toyota Production system has long been considered as the source of Toyota’s outstanding performance as a manufacturer. The distinctive practices of the system especially Kanban and quality circles have been widely used elsewhere. Companies that have tried to adopt the Toyota Production System can be found in diverse fields. However‚ what is surprising is that only a few manufacturers have succeeded in imitating Toyota successfully even though
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and industrial applications. Citric Acid is one of the organic acids commonly used as a chelating agent. It is considered an excellent chelating agent that binds metals. It is used to remove lime scale from boilers and evaporators. It can be used to soften water‚ which makes it useful in soaps and laundry detergents. By chelating the metals in hard water‚ it lets these cleaners produce foam and work better without need for water softening devices. Citric acid is the active ingredient in some bathroom
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