Biology Key Questions – Lesson #1 1. How many electrons does Mg2+ have? Answer: Mg2+ has 10 electrons. A Magnesium atom has 12 electrons‚ 2 of which are valence electrons. The atom will lose the 2 outermost electrons in order to stabilize its electron shell. The nucleus maintains its 12 protons and becomes a Mg2+ ion. 2. Given that the half-life of the radioisotope carbon-14 is 5730 years‚ how useful do you think this isotope would be for dating bones that are over a million years
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duration of energy. It generates energy equivalent to approximately 1o Kcal/day. Through oxidative system‚ ATP can be produced in three ways which are 1. Krebs Cycle 2. Electron Transport Chain (ETC) 3. Beta Oxidation Krebs cycle This cycle is a series of chemical reactions which aid the oxidation of glucose that was previously initiated during glycolysis. The Acetyl Coenzyme A enters the Krebs cycle where it is broken down into hydrogen and Co2. What happens is that the pyruvic acid (produced during
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This report will overview the redox reaction - cellular respiration: C5H12O6 + 02 → 6CO2 + 6H2O + Energy and it’s use with the human body. Cellular respiration is a chemical process providing the body with usable and fast source of energy in the form of ATP. Along with ATP cellular respiration also produces CO2‚ H2O and Heat. This is an organic redox reaction. Redox reactions Redox reaction occur when there is a movement of electrons between atoms. Part of a redox reaction include: Oxidising Agent:
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Alkane‚ Alkene‚ Alkyne & Aromatic Learning Objectives 1. 2. 3. Determine the IUPAC name‚ common name and structure of an alkanes‚ alkenes and cycloalkanes. Identify the physical properties of alkanes. Describe briefly natural sources and importance of alkanes Describe reactions of alkanes Propose a mechanism on free radicals substitution 4. 5. 6. Describe the preparation and reactions of alkenes. 7. Propose mechanism on preparation; dehydration of alcohol 8. Define carbocation
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Science of Controlled Breathing. Breathing is so natural that one hardly thinks about breathing unless he has trouble in breathing due to ill health. It is capable of keeping the organism live i.e.‚ the Self prolongs the established connection with the body. If one begins getting will to know about breathing‚ I am sure he has the prospective chance of knowing his Self which is also natural. Breathing is a process by which the Self keeps its assumed body live with all its instruments that helps to
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Corrosion is the gradual destruction of materials (usually metals) by chemical reaction with its environment. In the most common use of the word‚ this means electrochemical oxidation of metals in reaction with an oxidant such as oxygen. Rusting‚ the formation of iron oxides‚ is a well-known example of electrochemical corrosion. This type of damage typically produces oxide(s) or salt(s) of the original metal. Corrosion can also occur in materials other than metals‚ such as ceramics or polymers‚ although
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) The resulting solution is called an "electrolyte." Chemical Reaction When two dissimilar metals are put in an electrolyte‚ a chemical reaction called "oxidation-reduction" occurs. Because different metals have different levels of attraction for their electrons‚ one of the metals will lose electrons‚ a process which chemists call oxidation‚ and the other gains electrons‚ which is called reduction. The metal being oxidized is called the anode‚ and the one being reduced is the cathode. The entire
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Name: Kristen Jackson Form: 35 Date: May 30‚ 2012 Geography Homework 1. Explain the difference in the process between carbonation and oxidation. When carbon dioxide in the air dissolves in rain‚ a weak carbonic acid is formed. This weak acid‚ while harmless to plants and animals‚ is able to dissolve some kinds of rocks‚ like feldspar and limestone‚ in a process called carbonation. Many caves begin forming during the process of carbonation. On the other hand‚ any mineral that reacts
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Ludwig-Maximilians-Universita¨t Mu¨nchen‚ Munich‚ Germany . Introduction Under anaerobic conditions‚ in the dark and in the absence of electron acceptors‚ organic compounds are catabolized by strictly anaerobic or facultatively anaerobic bacteria by internally balanced oxidation–reduction reactions‚ a process called fermentation. In fermentation‚ the organic compound serves as both electron donor and acceptor‚ and adenosine triphosphate is synthesized by substrate level phosphorylation. . Types of Fermentations . Distribution
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essential for our bodies. In the body these fatty acids are modified to make eicosanoids. These are the signaling molecules that have complex control over growth‚ inflammation‚ immunity‚ maintaining healthy skin‚ to name just a few. They are made by oxidation of twenty carbon chain fatty acids. The amount of these fatty acids in the diet will affect the body’s ability to make these eicosanoids‚ therefore having a direct effect on all of the functions the eicosanoids are responsible for‚ including growth
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