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Free research essays on topics related to: molecules

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  • Types Of Cancer Type Of Treatment
    1,345 words
    One of the many complications with cancer is that there are so many different types. Currently, there are 112 types of cancer, and there is an estimated 80 more types of cancer that are undiscovered. (United States Cancer Rates) That leads to as many different treatments as there are types of cancer. Figure 1, located after the Recommendations section, on page 8 displays the number of recorded cancer cases over the past 15 years. I propose to look at several types of treatments and decide which ...
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  • Hydrogen Bombs Rain Forests
    709 words
    Planet Earth: Fate of The Earth was a powerful, informative, and inspirational documentary. The narrator, Richard Kiley, progressed through many points about our precious earth including her beginnings, her slow deterioration by man as well as other factors, and theories as to her what could be her end. The beginning images of earth, approximately four million years ago, can be described a barren yet fertile land with the prospect for life to flourish. Prehistoric volcanoes exploded with gases a...
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  • Long Term Effects Short Term Effects
    843 words
    St. Louis Cardinals Mark Mcgwire and the Chicago Cubs Sammy Sosa stated: Creatine gives us more strength in our workouts, and has helped us produce a more powerful homerun swing. (Williams 1) Creatine is an all-natural nutrient found in the bodies of all humans and most animals. 95 % of the bodys Creatine supply is found in the skeletal muscles. The other 5 % is spread throughout the body. People take this substance because it will increase your muscle mass and make you stronger by an intense wo...
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  • Carbon Dioxide And Water Organic Compounds
    791 words
    Have you ever wondered why your plants in your house and outside lean towards the sun. In my project I hope to answer why this happens. I am going to be using lima beans to do this with. The Greek philosopher Aristotle may have been the first to attempt to explain the processes of photosynthesis and food production. He believed that plants could obtain from the soil all the components required for growth. The cycle was completed when organisms perished and became reincorporated into the soil. Th...
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  • Organic Molecules Organic Matter
    633 words
    Dissolved oxygen infers to the volume of oxygen that is contained in water. Oxygen enters water through photosynthesis and across the water interface. The amount of oxygen that can be held by the water depends on the water pressure, salinity, and temperature. Gas solubility increases with decreasing temperature; thus colder water holds more oxygen. A reason why freshwater holds more oxygen than does saltwater is because gas solubility increases with decreasing salinity. When there is a change in...
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  • Red Blood Cells Connective Tissue
    986 words
    functions in the rapid internal transport of substances Your body's differentiated cells, which perform specialized tasks, cannot fend for themselves. Different types must interact in coordinated ways to maintain the composition, volume, and temperature of a tissue fluid surrounding them, the interstitial fluid. A circulating connective tissue-blood-interacts with tissue fluid, making continual deliveries and pickups that help keep conditions tolerable for enzymes and other molecules heart, gene...
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  • Prize For Chemistry In 1934 Urey Was Awarded Deuterium
    326 words
    Harold Clayton Urey was a scientist whose discovery of deuterium helped him win the Nobel Peace Prize for Chemistry in 1934. He also made fundamental contributions to the production of the atomic bomb through his development of the isotope separation processes for the Manhattan Project. Harold Urey was born in Walkerton, Indiana, on April 29, 1893. His early school tool place in rural Indiana. He entered the University of Montana in 1914 and received his Bachelors of Science degree in Zoology in...
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  • Neuro Transmission Positive Charge
    488 words
    neurotransmitters play a central and critical role in our psychological existence, identity, and experience of the world Neurotransmitters are chemicals that communicate between nerves. In some ways, neurons are like computers: they receive messages, process those messages, and send out the results as new messages to other cells. In the case of neurons, messages consist of chemicals that interact with the outer surface of the cell membrane. This chemical interaction with the cell membrane causes...
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  • Chemical Reaction Kinetic Energy
    633 words
    The rate of a chemical reaction is the derivative of the extent of the reaction with respect to time, to measure the effect of concentration upon the rate of the reaction of peroxydisulfate ion with iodine ion; to determine the order of the reaction with respect to the reactant concentrations; and to obtain the rate law for the chemical reaction. Four reaction solutions are prepare as: 1 - Dilute 5 mL of 0. 2 M KI solution with 10 mL of distilled water in a test tube, add 3 drops of starch solut...
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  • Shock Waves Air Pressure
    834 words
    Research: Airplanes are an efficient way of traveling to far places. Airplanes are amazing if you know what and how the air keeps the plane airborne. There are three components of flight: aerodynamics, the Bernoulli principal and supersonic flight. Some other things about flight are the four forces, lift, drag, weight, and thrust. One of the basic things you need to know about airplanes is that the places where the plane can balance on one point called the center of gravity. The tail on the plan...
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  • Sodium Bicarbonate Federal Drug
    577 words
    Crack (rock) and cocaine are both stimulant drugs, which are widely used in our country today. They both present problems for us because of their potency and highly addicted addicts that can not seem to escape their grasp. Crack and cocaine also have various street names such as coke, snow, blow, base, C, ice, flake, sniff, rock and the list goes on. Cocaine is sold in a white powder form, which is sniffed, injected, or smoked (free-basing) and is much more expensive than its cousin crack (rock)...
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  • Three And Four Reaction Rate
    859 words
    Title: Examining Some Properties of the Enzyme -amylase In this experiment a deeper meaning in the catalysts of reactions is studied. Catalysts accelerate chemical reactions without permanently changing the reaction. Enzymes, catalysts in biochemical reactions, are globular proteins which lower the activation energy needed to begin a reaction and therefore increase the rate at which efficient reactions can occur. Proteins (henceforth enzymes) are complex molecules made of amino acids in polypept...
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  • Atomic Mass Mass Spectrometer
    455 words
    The moles beginning is traced back to the most basic units of matter, atoms. Since atoms are extremely small, scientists have perplexed a great deal over finding a way to measure atomic mass. They struggled to find a universal container that had the capability to mass atoms. Measuring the mass of one atom on a balance in grams is not practical, because the result in grams is an amount too small to be of any use in the laboratory. Fortunately, a new idea came about. If two or more same amounts of...
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  • Source Of Energy Fatty Acids
    647 words
    Among the common fads and trends our society has seen in the past few years, a rather unlikely one would be that of carbohydrates. Carbohydrates provide our bodies with our basic source of energy to carry on day-to-day functions. Americans seem to be fascinated by the role that they play in our diets and the impact that they have on the body. What exactly is a carbohydrate? It is defined as 1. Any various compounds composed of carbon, hydrogen, and oxygen such as sugar and starch. All living org...
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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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  • Mad Cow Disease Amino Acids
    1,495 words
    Who would of thought that eating hamburgers, steaks and drinking milk could produce an epidemic disease? These types of food are frequently eaten for their appealing tastes and nutritional values. The discovery of Creutzfeld Jakob Disease (CJD) has been a long and remarkable one. The cause of this disease is a mutated prion protein within the brain that can be either inherited or acquired. These mutations create sponge like holes that destroy the brain. As a result, the disorder gives both behav...
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  • Males And Females Racially Biased
    1,391 words
    Commercials from Idea Studio during the TV show Baywatch. I have watched the show called Baywatch that was run on day television at 15: 00 - 16: 00 five days a week. The show is oftentimes interrupted by various commercials aimed at improvement of ones health as well as aimed at improving the body image. The commercials were developed by the company Idea Studio that focuses on the body improvement and gym equipment. The commercials were shown for approximately 12 minutes out of a 50 minutes show...
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  • Nitrogen Dioxide Sulfur Dioxide
    1,372 words
    Catalysts &# 038; Fine Particle In Industry Catalyst: Catalysis, alteration of the speed of a chemical reaction, through the presence of an additional substance, known as a catalyst, that remains chemically unchanged by the reaction. Enzymes, which are among the most powerful catalysts, play an essential role in living organisms, where they accelerate reactions that otherwise would require temperatures that would destroy most of the organic matter. A catalyst in a solution with-or in the same ph...
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  • Environmental Protection Agency Ozone Depletion
    1,137 words
    The ozone layer diminishes more each year. As the area of polar ozone depletion (commonly called the ozone hole) gets larger, additional ultraviolet rays are allowed to pass through. These rays cause cancer, cataracts, and lowered immunity to diseases. 1 What causes the depletion of the ozone layer? In 1970, Crutzen first showed that nitrogen oxides produced by decaying nitrous oxide from soil-borne microbes react catalytically with ozone hastening its depletion. His findings started research on...
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  • Ozone Layer Ultraviolet Rays
    962 words
    The Problem The atmospheric ozone layer protects all living things from the harmful effects of the Sun. In recent years however, much damage has been caused to the ozone layer, causing it to decrease in size. The depletion of the ozone layer has and will continue to have many detrimental effects on all living things on this planet. A thinner layer will allow more of the suns ultraviolet radiation to reach the Earths surface. In particular, it will be the increase of UV-B rays which will have the...
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