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Secondhand Smoke Athletic Prowess
1,862 wordsRepresentative introduces the following bill, which was referred to the committee on January tenth twenty thousand and one. Section One: Cigarettes are killing the uneducated youth. This bill is targeted towards the youth and protecting them against making the terrible decision to smoke. This bill will change the amount of smokers because the bill is going to make cigarettes less a part of society and make them less desired. Section Two: Every year cigarettes kill more Americans than were killed...
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Organic Chemistry Anti Inflammatory
2,348 wordsWhat would you think if I gave you a drug and said this is going to help you but I want you to know ahead of time that 50 % of the dose is not affected, in fact the drug is 50 % not pure. The idea of that would make you feel you want another drug. The reality of that is that a large # of drugs we give are 50 % impure and the reason is b / c so many drugs we give are racemic mixtures, a 50: 50 mixture of enantiomer's. Most drugs that demonstrate optical activity only one isomer is pharma logicall...
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H 2 O Nucleic Acid
1,102 wordsA Controlled experiment allows a researcher to isolate and test a single variable A kilogram is approx. equal to 2. 2 pounds A meter is a little longer than a yard An astronaut would expect her weight to be different on the moon A milliliter is equal to cc, ml, cubic cente meter The weight of an object is the measure of the pull of gravity 0 - 100 is freezing to boiling on the cells scale Living orginsims produce new orginsims of the same species by reproduction All living orginsims must obtain ...
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Ozone Depletion Ozone Layer
1,344 wordsThe Earths ozone layer shields all life on the planet from the suns harmful radiation and is extremely important to all life on the planet, but we as a human race are now faced with a very important question. This question is, Is the Earths ozone layer really depleting, and if it is, is it really a threat? There is evidence that less protection from ultraviolet rays will, over time, lead to increased amounts skin cancer, cataract, and even crop damage. With cooperation with over 140 oth countrie...
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Nitrogenous Bases Amino Acids
999 wordsDeoxyribonucleic acid and ribonucleic acid are two chemical substances involved in transmitting genetic information from parent to offspring. It was known early into the 20 th century that chromosomes, the genetic material of cells, contained DNA. In 1944, Oswald T. Avery, Colin M. MacLeod, and Maclyn McCarty concluded that DNA was the basic genetic component of chromosomes. Later, RNA would be proven to regulate protein synthesis. DNA is the genetic material found in most viruses and in all cel...
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Neuromuscular Junction Nerve Impulses
973 wordsTransmitter Molecule Derived From Site of Synthesis Acetylcholine Choline CNS, parasympathetic nerves 5 -Hydroxytryptamine (5 -HT) Tryptophan CNS, chromatin cells of the gut, enteric cells Tyrosine adrenal medulla, some CNS cells Adenosine ATP CNS, peripheral nerves ATP sympathetic, sensory and enteric nerves Nitric oxide, NO Arginine CNS, gastrointestinal tract Many other neurotransmitters are derived from precursor proteins, the so-called peptide neurotransmitters. As many as 50 different pept...
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Mcgraw Hill Book Hill Book Company
1,599 wordsChemistry has been called the science of what things are. Its intent is the exploration of the nature of the materials that fabricate our physical environment, why they hold the different properties that depict them, how their atomic structure may be fathomed, and how they may be manipulated and changed. Although organic reactions have been conducted by man since the discovery of fire, the science of Organic chemistry did not develop until the turn of the eighteenth century, mainly in France at ...
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Copper In Nitric Acid
554 words3 Cu + 8 HNO 3 -- 3 Cu (NO 3) 2 + 2 NO + 4 H 2 O The balanced equation seen on the top is what you attain when you place copper metal in concentrated nitric acid. In this process the identifiable characteristics of the metal will be completely changed and a new substance, cupric nitrate, will be formed. Copper forms two series of chemical compounds: cuprous, and cupric. Cuprous compounds are easily oxidized to cupric, in many cases by simple exposure to air; cupric compounds are stable. When nit...
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Sodium Chloride Earth Crust
745 wordsSodium has an atomic number of 11 and a mass of about 23 g. It is a silvery white-metallic element classified under the alkali metals. Sodium has been known since early times and was used by the people of Mesopotamia and Egypt to make glasses. Sodium is the sixth most common element found on the earth. It is usually not found in nature but more often in compounds such as salt (NaCl). Sodium conducts heat and electricity easily. Without this element life could not exist. Each compound is used for...
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Clean Air Act Effects Of Acid Rain
1,122 wordsWhen looking at air pollution, we can see that there are many types, one type is acid rain. Scientists have discovered that air pollution from the burning of fossil fuels mainly in power stations and industry in countries such as Germany, United Kingdom and other economically developed countries is the major cause of acid rain. Acidic deposition or acid rain as it is commonly known occurs when emissions of sulphur dioxide (so 2) and oxides of nitrogen (no) react in the atmosphere with water, oxy...
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Sulfur Dioxide And Nitrogen Burning Of Fossil Fuels
1,264 wordsWhat is Acid Rain? Acid rain is a form of precipitation that falls to the earth as rain. For rain to be acidic it has a pH level of less than 5. 6. The corrosive nature of acid rain causes widespread damage to the environment. The problem begins with the production of sulfur dioxide and nitrogen oxides from the burning of fossil fuels, such as coal, natural gas, oil and other kinds of manufacturing. When these pollutants are in the air, they react with water and other chemicals, to form sulfuric...
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Atomic Weight Large Quantities
608 wordsAtomic Number: 8 Atomic Radius: 66 pm Atomic Symbol: O Melting Point: - 218. 79 C Atomic Weight: 15. 9994 Boiling Point: - 182. 95 C Electron Configuration: [He] 2 s 22 p 4 Oxidation States: - 2 History (Gr. oxy's: acid, and genes: forming) For many centuries, workers occasionally realized air was composed of more than one component. The behavior of oxygen and nitrogen as components of air led to the advancement of the phlogiston theory of combustion, which captured the minds of chemists for a c...
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Sir Humphrey Davy Mattiessen Isolated Larger Lithium
426 wordsLithium, which is represented by the symbolic notation, Li, is the third element on the periodic table. The mineral Petalite (which contains lithium) was discovered by the Brazilian scientist Jos Bonifcio de Andrada e Silva towards the end of the 18 th century while visiting Sweden. Lithium was discovered by Johan August Arfvedson in 1817 during an analysis of Petalite ore. Arfvedson subsequently discovered lithium in the minerals spodumene and lepidolite. C. G. Gmelin observed in 1818 that lith...
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Support For Large Segments Support For Large Polymers
922 wordsBiodegradable polymer sutures Biodegradation: A biological agent (an enzyme, microbe or cell) responsible for degradation. Most degradable polymers are polyesters. Polymers prepared from glycolic acid and lactic acid have found a multitude of uses in the medical industry, beginning with the biodegradable sutures first approved in the 1960 s. Since that time, diverse products based on lactic and glycolic acid and on other materials, including poly (dioxanone), poly (trim ethylene carbonate) copol...
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Life On Earth Newly Discovered
881 wordsUntil recently, scientists believed that the sole source of energy responsible for life on earth was the sun. In 1977, a group of scientists researching the theory of plate tectonics, traveled to the floor of the equatorial Pacific Ocean and discovered something that could possibly explain how life began on this planet. From the Galapagos Rifts thermal springs, scientists discovered densely populated communities of several species never before observed. Since that time the Federal Government has...
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Nerve Endings Secondary Symptoms
2,961 wordsmigraine In America approximately 45 million people each year consult physicians for relief of chronic headache pain (1). Chronic headache pain is second only to the common cold in loss of work and wages due to ailment (8). In the past decade advancements in the understanding and treatment of vascular headache syndromes have increased drastically. The activity in this field is plagued and sometimes hindered with competing theories about migraine pathogenesis. The many symptoms that have broadene...
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World Trade Center Chemical And Biological
3,864 wordsIntroduction It was another calm early morning on the subway train. Many of the passengers were napping on their way to work. The train slowed to a stop to allow more passengers on, then sped along to its destination, the central government dist right in Tokyo. Many of the passengers found it strange that a man who got on at the last stop was wearing sunglasses, but soon dismissed it remembering how safe the subways and their homeland have always been. Well, they were mistaken. The man with the ...
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Sprayed With Pheromones Insects And Animals Androsterone
484 wordsDo you often Pheromones Pheromones Do you often wonder what makes someone attracted to you or what makes you attracted to that other person? Sometimes you can look at the person and not even be attracted to their looks, but you feel compelled to talk to them or just contact them in any form. These urges could be induced by a compound group most commonly called Pheromones. Pheromones{fair-uh-more} (from the Greek per, to carry and human to stimulate) are chemicals released by organisms into the e...
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Carbon Dioxide And Water Green Plants
540 wordsPhotosynthesis is the Photosynthesis PHOTOSYNTHESIS Photosynthesis is the process by which green plants and certain other organisms use the energy of light to convert carbon dioxide and water into the simple sugar glucose. In so doing, photosynthesis provides the basic energy source for almost all organisms. Oxygen is extremely important to photosynthesis, which most organisms depend on. Photosynthesis occurs in green plants, seaweeds, algae, and certain bacteria. Chlorophyll is capable of conve...
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Neuromuscular Junction Nerve Impulses
1,028 wordsTransmitter Molecule Derived From Site of Synthesis Acetylcholine Choline CNS, parasympathetic nerves Serotonin 5 -Hydroxytryptamine (5 -HT) Tryptophan CNS, chromatin cells of the gut, enteric cells GABA Glutamate CNS Glutamate CNS Aspartate CNS Glycine spinal cord Histamine Histidine hypothalamus Epinephrine synthesis pathway Tyrosine adrenal medulla, some CNS cells Norpinephrine synthesis pathway Tyrosine CNS, sympathetic nerves Dopamine synthesis pathway Tyrosine CNS Adenosine ATP CNS, periph...
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