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Free research essays on topics related to: receptor

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  • John The Savage Bernard Marx
    1,590 words
    Some drugs dull, stupefy and sedate. Others sharpen, animate and intensify. After taking soma, one can apparently drift pleasantly off to sleep. Bernard Marx, for instance, takes four tablets of soma to pass away a long plane journey to the Reservation in New Mexico. When they arrive at the Reservation, Bernard's companion, Lenin, swallows half a gramme of soma when she begins to tire of the Warden's lecture, "with the result that she could now sit, serenely not listening, thinking of nothing at...
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  • Amino Acids Stress Hormones
    1,374 words
    In 1975, Dr. John Hughes and Dr. Kosterlitz discovered Endorphins. It has been confirmed that Endorphins have both neurological and spinal effects. Twenty different types of Endorphins have been discovered in the nervous system. The most effective, beta-endorphin, which gives the most euphoric effect to the brain, has been found to be composed of 31 amino acids. The word Endorphin is abbreviated from 'endogenous morphine' which means morphine produced naturally in the body. Endorphins are renown...
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  • Neuromuscular Junction Nerve Impulses
    973 words
    Transmitter 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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  • Mutations In Nature Evolution Of Man
    1,542 words
    ... A virus invades a host cell by piercing it at a site called a "receptor. Upon attachment, the virus injects its DNA into the cell, coding it to reproduce more of the virus. After the virus is replicated millions of times over, the cell bursts and the new viruses are released to continue the cycle. The body's natural defense against such cell invasion is to release certain proteins, called antigens, which "plug up" the receptor sites on healthy cells. This causes the foreign virus to not have...
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  • Form Hydrogen Bonds O H Groups Site
    346 words
    Chemists have been looking for a sweetener that is sweet or sweeter than sucrose. They want it to have a pleasant taste with no aftertaste, is nontoxic, inexpensive, easy to make, stable to heat, stable in light, dissolves Readily in water, does not promote dental cavities, and preferably has no caloric content. Sweetness is not a simple property to work with. There are a lot of other properties that scientist has studied to get that right sweet taste. There is something that they all have in co...
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  • Viral Dna Infectious Disease
    817 words
    Polio is an infectious disease that has haunted the lives of many for over 3, 000 years. The first record of Poliomyelitis in the human body dates back to ancient Egypt where inhabitants of the area engraved a documented version of paralytic Poliomyelitis into stone. When indoor plumbing came into use, in the 20 th century, and sewage systems began to develop into complicated public works where waste was dumped into towns' water supplies; that is when Poliomyelitis began to spread. The disease c...
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  • Males And Females Pituitary Gland
    1,352 words
    Acromegaly (Greek for appendage enlargement) is a rare but very serious disease frequently referred to as Gigantism or Giantism. It is the direct result of an overproduction and secretion of the adenohypophyseal growth hormone GH. True to its name, the disease is characterized by an enlargement of the organs, bones, and soft tissues, as well as a thickening of the skin and bodily membranes; and is frequently difficult to diagnose, as symptoms often do not appear until middle age. Typically the d...
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  • Diabetes Mellitus Type Ii
    1,088 words
    Scientific Rationale for Selection of the Target A. Characterization of Target Diabetes Mellitus is a heterogeneous group of metabolic diseases characterized by the presence of excessive amounts of glucose and glucagon in the blood of diabetic patients. The most frequently cited reason for Diabetes Mellitus (DM) is either a lack of insulin secretion (DM Type I) and / or , more commonly, the resistance to insulin in the peripheral tissues, particularly muscle and adipose tissue (DM type II). Henc...
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  • Plasma Membrane Alzheimer Disease
    950 words
    Lipid Rafts A lipid raft is a micro domain within the membranes of cells that is cholesterol-rich. It has been believed since 1972 that, in cell membranes, membrane proteins and phospholipids are constantly and widely distributed as following a fluid mosaic model. Then in 1988, a scientist named Kai Simmons, who worked at the European Molecular Biology Laboratory located in Germany, suggested the notion that there exist micro domains, which are enriched with a lot of different kinds of lipids, s...
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  • Type Ii Diabetes Ays
    1,404 words
    Diabetes Type II Half of the 16 million people walking around with type II diabetes don't even know they have it. That's because the symptoms they " re experiencing are easily attributed to something else. When an older woman complains of clouded eyesight, it's likely her doctor will think of cataracts instead of type III (or non insulin-dependent) diabetes. And when an older man starts taking too many trips to the bathroom in the middle of the night, a prostate problem -- not diabetes -- is oft...
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  • Cannabis Sativa Boca Raton
    1,778 words
    Opponent s Factual Brief OPPONENT S BRIEF Factual Proposition: Consuming marijuana is detrimental to one s health. Definition of key terms: 1. Consumption = Smoking or eating marijuana. 2. Marijuana = Psychoactive mind altering substance, also known as cannabis. 3. Detrimental = Serious harm. Primary Inference: Smoking or eating marijuana is likely to create serious health problems for most individual users or society. Overview: Since the 1920 s supporters of marijuana prohibition have exaggerat...
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  • Commonly Referred Receptor Sites
    915 words
    It is used in offices, parties, on street corners, in homes, and even in schools. With so much widespread abuse, cocaine is in extreme demand. Cocaine abuse has risen 118 % since 1990, and continues to rise. Cocaine addiction is easy to understand it [cocaine] produces a good feeling, so naturally people would tend to want more of it. The question now though, is how does it produce these feelings, and why is the addiction so strong. By taking a look at cocaine from its entrance into the body, to...
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  • Amino Acids Reader Feels
    1,525 words
    THE LANGUAGE OF THE CELL MAY 3 rd, 1996 SCIENCE 10 AP BOOK INFORMATION LIBRARY: Fish Creek Area Library NAME OF BOOK: The Language of the Cell AUTHOR: Claude Korean PUBLISHER: McGraw-Hill, Inc. PUBLICATION DATE: 1993 CALL NUMBER: 3 9065 03969 1246 DUE DATE: May 3 rd, 1996 The cell is a complex and delicate system: It can be seen that the cell is the stage where everyday functions such as molecule movement, protein synthesis and tissue repair take place. All organelles within the cell are well re...
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  • Legalization Of Marijuana Reform Of Marijuana Laws
    1,396 words
    The Legalization of Marijuana Marijuana is a drug that comes from a variety of common hemp known as cannabis indica. The much more potent hashish is also derived from the plant cannabis indica. What is sold on the street as marijuana, hemp, weed, pot, or bud are the dried leaves and the flowering tops of the plant. The primary psychoactive component in marijuana is the trans-delta-tetrahydrocannabinol, or THC. By 1937, marijuana had become illegal in 46 states. Penalties for its use were similar...
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  • Cell Division Prostate Cancer
    1,104 words
    Discuss social, ethical and biological issues associated with cancer Cancer is one of the most complex and devastating diseases that claim the life of many humans. Today there are one in three people worldwide who are affected by cancer, and almost 60 % of these people will almost certainly die. 7000 New Zealanders die every year from this disease. It is the second largest killer next to heart disease. Cancer does not just affect certain groups of people, it can affect anybody and it is not just...
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  • Studies Have Shown Effects Of Marijuana
    794 words
    Marijuana is the most widely used illegal drug. It is considered to be a drug that is very addictive, and bad for you. Even though scientists have proven that it is not addictive, and that it is really no worse for you than other socially acceptable drugs like caffeine, tobacco, and alcohol. There are many common myths about it, and about the people who use it. Some of which include, that marijuana is a gateway drug that leads to the use of harder drugs like heroin, LSD, and cocaine. Others say ...
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  • Marijuana Legalization Marijuana Smokers
    2,176 words
    1 Marijuana Legalization Marijuana legalization has been a widely discussed topic for a number of years. America has a long history with marijuana, over the past 250 years marijuana has been a part of our society (Martin Online Web). After assessing the truth about marijuana, one may begin to think about legalizing it. Marijuana is used for medicinal purposes, clothing, rope, and socially. The actual harm marijuana causes to individuals is slim and the positive attributes of legalizing it far ou...
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  • Cell Division Prostate Cancer
    1,110 words
    Social, Ethical And Biological Issues Associated With Social, Ethical And Biological Issues Associated With Cancer Cancer is one of the most complex and devastating diseases that claim the life of many humans. Today there are one in three people worldwide who are affected by cancer, and almost 60 % of these people will almost certainly die. 7000 New Zealanders die every year from this disease. It is the second largest killer next to heart disease. Cancer does not just affect certain groups of pe...
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  • Drugs That Mimic Oregon Patients With Anorexia Hormone
    398 words
    A bulimics or anorexics I-function may also be positively affected by drugs which can change its neuro-chemical environment. In this chemical fashion relief may be found for affected individuals. Numerous hormones, cortisol, oregon A, oregon B, luteinizing hormone, luteinizing-hormone-releasing factor, and follicle-stimulating hormone, have been linked to these eating disorders. These hormones are all present in healthy people, while in those affected with an eating disorder the levels or distri...
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  • Bone Loss Vitamin D
    532 words
    Osteoporosis is Osteoporosis Osteoporosis Osteoporosis is a health ailment which causes bones to become so porous that they can break easily. Osteoporosis literally means porous bones. The bones in our skeleton are made of a thick outer shell and a strong inner mesh filled with collagen [protein], calcium salts and other minerals. The inside looks like honeycomb, with blood vessels and bone marrow in the spaces between bone. Osteoporosis occurs when the holes between bone become bigger, making i...
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