Leila Cappellano Mrs. Moss AP Biology 3/4/13 Genetically Modified Organisms Genetically modified organisms have been a controversial subject since their discovery throughout the world. While arguments are made that some of these organisms can benefit people‚ most of these unnatural organisms contaminate the environment. Many say that not enough research has been done to know what these organisms are capable of doing to the environment and the health of the population. Genetically modified food
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rapidly. With early detection and proper treatment‚ melanoma has a high cure rate. Early detection and treatment are possible because melanoma typically begins on the surface of the skin. It develops when melanocytes are damaged‚ which causes these cells to grow uncontrollably. As melanoma develops where melanocytes occur‚ this cancer can begin on the skin‚ under a nail‚ and even in an eye or on a mucous membrane.The type of treatment a doctor will recommend to a melanoma sufferer depends on the stage
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Portfolio The Cell and Cell Theory [pic] The cell The word cell comes from the Latin word “cellula”‚ which means a small room. The cell is the smallest unit of a living organism‚ also known as “the building block of life”. Every living organism is consisted of a cell. There are bacteria (unicellular organisms)‚ and multicellular organisms. There are different types of cells‚ prokaryotic and eukaryotic cells. All cells come from preexisting cells. “Every cell is self-maintaining;
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deeper and deeper and dig out some new ways of transforming energy‚ biological‚ chemical‚ solar‚ or even Hydraulic. Energy “the ability to do work” is a phenomenon which in different areas people have their own definitions of it‚ but generally in Physics‚ it’s described as “an Indirectly observed quantity that is often understood as the ability of a physical system to do work on other physical systems”‚ or we can say in our own words that “Energy is an indirect force which results a certain change
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chemical and electrical energy OIL RIG – oxidation is loss‚ reduction is gain (of electrons) Oxidation – the loss of electrons‚ increase in charge Reduction – the gain of electrons‚ reduction of charge Oxidation number – the assigned charge on an atom Oxidizing agent (OA) – the species that is reduced and thus causes oxidation Reducing agent (RA) – the species that is oxidized and thus causes reduction ELECTROCHEMISTRY INVOLVES TWO MAIN TYPES OF PROCESSES: A. Galvanic (voltaic) cells – which are spontaneous
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Chemistry Essay: Electrochemical Cells By John Williams An electrochemical cell is s cell in which chemical energy in a redox reaction is converted to electrical energy. It consists of two half cells connected internally by a salt bridge and externally by wires. A hydrogen half cell is the standard electrode and all comparisons of the other half cells are made against this half cell which has an E( value of zero volts. The E( values of other half cells are obtained by measuring the total emf (electromotive
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Society has always tried to standardize people. Events in the 1950s demonstrated this in their idea of gender roles. Women were obligated to stay home. The percentage of women going to college dropped considerably in the 50s. The gender roles were emphasized through television. For example‚ “The Adventures of Ozzie and Harriet”. Magazines‚ books‚ and music also reiterated the submissive wife. At the same time‚ men were expected to be bold‚ to hold jobs in factories or management. Men there were
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Energy transfers which take place in living organisms The nucleotide ATP (adenosine triphosphate) maintains both catabolic and anabolic reactions. Catabolic reactions e.g. respiration are where larger molecules are broken down into smaller ones with energy being released‚ and anabolic reactions e.g. photosynthesis are where smaller molecules are built up into larger ones which require energy. Catabolism provides the energy for organisms to synthesise larger molecules in its anabolic reactions.
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HYPOXIA Introduction Hypoxia is simply a lack of oxygen at the tissue level of the body due to a decreased partial pressure of oxygen in the inspired air. Hypoxia is serious‚ because it may lead to death. Diseases of the blood‚ the heart and circulation‚ and the lungs may all produce some form of hypoxia. There are four types of hypoxia: (1) the hypoxic type‚ in which the oxygen pressure in the blood going to the tissues is too low to saturate the haemoglobin; (2) the anaemic type‚ in which
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I n the 1930’s the farming was a big boom‚ but as more people came the less and less the nutrients was taken out of the soil. The dust bowl was also known as “the Dirty Thirties” before all the migrants moved to the states the soil was rich and full of nutrients‚ but the states didn’t get much rain to keep the land fertilized. As soon as the immigrants moved they started to plant right away and the soil went from rich and full of nutrients to poor soil and the nutrients were all gone. So the
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