solution to brick-red precipitate. In test tube B‚ the Hydrolysis then Benedict’s test is tested for the non-reducing sugar which is sucrose. After boiling the solution of sucrose and dilute hydrochloric acid‚ the solution is neutralised with sodium hydrogen carbonate and after that the Benedict’s test is tested. This final result is positive and the colour change from blue to brick-red precipitate. In test tube C‚ the iodine test is tested for the presence of starch. This test gives the positive
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with the breakdown of a family‚ and various factors that contribute to the issues the arise from this. The cause of a breakdown could vary from mutual separation‚ financial stress‚ and poverty to domestic violence‚ Abuse‚ imprisonment or even death (Utting‚ 1995). Families vary culturally‚ financially and geographically. Research into how such issues effect the wellbeing of a child suggests that‚ depending on a families make up‚ depends on how the issues associated with family breakdown effects
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On The Activity Of The Enzyme Catalase A Level Biology Project Aims This is an experiment to examine how the concentration of the substrate hydrogen peroxide affects the rate of reaction of the enzyme catalase. Background Information Enzymes such as Catalase are protein molecules which are found in living cells. They are used to speed up specific reactions in the cells. They are all very specific as each enzyme just performs one particular reaction. Catalase is an enzyme found in food such
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medicinal products such as quinine and eucalyptus. In fact‚ most of the medicines that we use ultimately come to us through trees and vegetation. Trees play an important role in purifying the air around us. They breathe in carbon dioxide and breathe out oxygen that sustains our life. Thus they make this world a better place to live in. Trees are also very necessary for having good rainfall. The trees attract rain bearing clouds and prevent soil erosion and conserve the earth. Our Government also realised
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at pH = 7 would be: A. +2 B. +1 C. 0 D. -1 E. -2 5. The sequence of monomers in any polymer is this type of structure: A. primary structure B. secondary structure C. tertiary structure D. quaternary structure E. All of these 6. Hydrogen bonds are most important in this type of structure in proteins: A. primary structure B. secondary structure C. tertiary structure D. quaternary structure E. All of these 7. The overall folding of a single protein subunit is called: A
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1. DNA Nucleotide [pic] Nucleotides consist of three parts --- a pentose sugar‚ a nitrogen-containing base‚ and a phosphate group. A pentose sugar is a five-sided sugar. Deoxyribose has a hydrogen atom attached to its #2 carbon atom (designated 2’)‚ and ribose has a hydroxyl group atom there. Deoxyribose-containing nucleotides are the monomers of DNA RNA Nucleotide [pic] The left picture shows the nucleotide unit of RNA. Nucleotides differ from nucleosides
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a result of fusion in high-mass stars‚ Like other group 8 elements‚ iron exists in a wide range of oxidation states‚ −2 to +8‚ although +2 and +3 are the most common. Elemental iron occurs in meteoroids and other low oxygen environments‚ but is reactive to oxygen and water. Fresh iron surfaces appear lustrous silvery-grey‚ but oxidize in normal air to give iron oxides‚ also known as rust. Unlike many other metals which form passivating oxide layers‚ iron oxides occupy more volume than iron metal
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MOLECULAR ELECTRONICS INTRODUCTION Molecular electronics (sometimes called moletronics) is a branch of applied physics which aims at using molecules as passive (e.g. resistive wires) or active (e.g. transistors) electronic components. The concept of molecular electronics has aroused much excitement both in science fiction and among scientists due to the prospect of size reduction in electronics offered by such minute components. It is an enticing alternative to extend Moore’s Law beyond the
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<b>Thesis Statement</b><br>The hydrogen bomb is a nuclear weapon in which light atomic nuclei of hydrogen are joined together in an uncontrolled nuclear fusion reaction to release tremendous amounts of energy. The hydrogen bomb is about a thousand times as powerful as the atomic bomb‚ which produces a nuclear fission explosion about a million times more powerful than comparably sized bombs using conventional high explosives such as TNT.<br><br><b>The Hydrogen Bomb</b><br>The Atomic Bomb Was A Essential
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MOLECULAR MODELING 1. Objectives ● Predictthe shape of identified compounds; ● Construct molecular models of identified compounds; and ●Determine the molecular structure of identified compounds. 2. Theory Building models of molecules are useful for visualizing how atoms are connected in three-dimensional space called molecular geometry‚ which is best predicted by Valence-Shell Electron-Pair Repulsion (VSPER) theory. The following are the sets of rules summarizing thsi theory: ●
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