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Rate Of Reaction Bunsen Burner
1,230 wordsInvestigate A Factor Which Affects the Rate Of Fermentation Of Yeast This experiment is investigating one of the factors which affects the rate of fermentation of yeast. Several factors affect the rate of reaction: &# 61656; Increasing the concentration. (See the lock and key theory. ) If the substrate (glucose) is increased, then there would be more keys for the locks, therefore an increase in reactant concentration leads to an increase in reaction rate. &# 61656; The surface area, the bigger t...
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Compressed Air Kinetic Energy
849 wordsThere are many ways to make an internal combustion engine work more efficiently, they include cylinder heads that use dual overhead camshafts, variable length intake manifolds, turbochargers, and superchargers. This paper will discuss the last of these devices listed, the supercharger. All good supercharging systems also integrate an intercooler to increase efficiency, so lets take a look at the two units together and discuss the physics of what they do and how they work. A supercharger is actua...
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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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Size And Strength Anabolic Steroids
1,721 words"Steroids. " It's a familiar word with typically negative connotations, yet they have benefits behind the drug also. No doubt you " ve heard about athletes who abuse steroids. Or you may be all too aware of the bad side effects associated with steroid medications. Well Ill be talking about steroids in depth. What steroids are composed of, development of steroids, how it was given a bad name, how it works in the major parts of the body, and better way steroids can be used. What are Steroids? Ster...
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A Summary Ion Channels In The Membrane
869 wordsA Summary: Ion Channels in the Nerve-Cell Membrane In this article, Richard D. Keynes details the workings of ion channels in nerve cell membranes. Nerve impulses (action potentials) are the unit by which information travels in an organisms nervous system, and the generation of this action potential is dependent on the nerve membrane being permeable to ions which in turn makes said membrane excitable. Electrical activity of a nerve is triggered by a depolarization across the membrane and this al...
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Plant Cells E G
840 wordsWater has importance inside cells and externally. This may be because it has interesting chemical and physical properties; it can be found naturally in all three of its states. However its molecules are bonded together by hydrogen bonds, this raises its melting and boiling points, i. e. its boiling point would be - 120 C rather than 100 C. Also because it contains slightly negatively charged oxygen atoms and slightly positively charged hydrogen atoms making it polar. Water has been called a univ...
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Effects Of Alcohol On The Brain
958 wordsAlmost everyone has tried alcohol at some stage, and many also use it as a regular basis in parties and other special occasions. When a small amount of alcohol is consumed, it stimulates the appetite and makes it easier for people to produce conversations and it also gives relaxation and good feelings. However excessive drinking can cause serious negative effects. Some of the negative effects are that the individual will start to talk loudly, make inappropriate statements, act aggressively and e...
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Sulfuric Acid Sodium Hydroxide
1,751 wordsAcid Rain Written by: Ali Right Introduction Acid rain has become an environmental concern of global importance within the last decade. With the increasing environmental awareness of the "unhealthy" condition of our planet earth the concern about acid rain has not lessened. In brief, acid rain is rain with pH values of less than 5. 6. When dealing with acid rain one must study and understand the process of making Sulfuric acid. In this project we will take an in depth look into the production of...
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Earth Atmosphere Years Ago
1,031 wordsH. G. Wells wrote in his book, "War of the Worlds", about Martian invasion toward earth. He mentioned, "No one would have believed, in the last years of the nineteenth century that this world was being watched keenly and closely by intelligences greater than man's and yet as mortal as his own; that as men busied themselves about their various concerns they were scrutinized and studied, perhaps almost as narrowly as man with a microscope might scrutinize the transient creatures that swarm and mul...
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England Journal Young Girls
660 wordsI discovered that mitochondria evolved from the chloroplast (Audersirk p. 369). The endosymbotic hypothesis championed most force full by Lynn Margulis of the University of Massachusetts, propose that cells acquired the precursors of mitochondria and chloroplast by engulfing certain types of bacteria. This happens by the aerobe bacteria that absorbs those molecules and used energy oxygen to complete their metabolism. By gaining a high range of energy, using large food resources, great amount of ...
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Bioethics Advisory Commission National Bioethics Advisory
1,344 wordsOn February 24, 1997, the scientists at the Roslin Institute in Edinburg, Scotland announced their success in cloning an adult mammal for the first time. The cloned sheep was named Dolly. She was the first animal cloned from a cell taken from an adult. It was an accomplishment than science had declared impossible. In June, 1997, the National Bioethics Advisory Commission issued its recommendation that a ban be placed on all efforts to create a child through cloning or somatic cell nuclear transf...
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Nucleic Acids Double Helix
1,905 wordsDouble Helix A review of Watson, James D. The Double Helix. New York: Atheneum, 1968. James Watsons account of the events that led to the discovery of the structure of deoxyribose nucleic acid (DNA) is a very witty narrative, and shines light on the nature of scientists. Watson describes the many key events that led to the eventual discovery of the structure of DNA in a scientific manner, while including many experiences in his life that happened at the same time which really have no great signi...
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Earth Surface Theory Is Based
1,417 wordsAccording to the Bible, God created the first man, Adam, from the soil and the first woman, Eve, from Adam? s rib. These events happened in the Garden of Eden almost six thousand years ago. That is one of the many beliefs of how carbon based life forms, otherwise referred to as living organisms, came to exist on Earth. Since the beginning of man? s reign on earth he has tried to explain his origins. He has used various religions and myths of being created by some higher power and he has looked t...
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Amino Acids Reader Feels
1,525 wordsTHE 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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Stimulated Emission Nobel Prize
1,216 wordsThe Wonderful World of Lasers Laser stands for Light Amplification by the Stimulated Emission of Radiation. Lasers work by producing an intense beam of bright light that travels in one direction. The laser has the unique ability to produce one specific color or wavelength of light, which can be varied in its intensity and pulse duration. The newest laser systems have become remarkably precise and selective, allowing treatment results and safety levels not previously available. All lasers contain...
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H 2 O Mass Spectrometer
531 wordsAMass Spectrometer Mass Spectrometer A mass spectrometer produces charged particles (ions) from the chemical substances that are to be analyzed. The mass spectrometer then uses electric and magnetic fields to measure the mass (weight) of the charged particles. There are many different kinds of mass spectrometers, but all use magnetic and / or electric fields to exert forces on the charged particles produced from the chemicals to be analyzed. A basic mass spectrometer consists of three parts: 1. ...
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Central Nervous System Anabolic Steroids
1,185 wordsDrug and medicine- As our understanding of the chemical basis for biology has grown, we have learned more about how molecules which constitute life. Many scientists are beginning to understand the connections between the physical and psychological matters and the molecules that cause them. As a result, we can now use these new understandings of medicine against any dangerous or unpleasant conditions. For example, depression can be treated with drugs that can revive the brain to its normal level....
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Amino Acids Industrial Revolution
1,571 wordsLet me say it right now. Everything you thought was the limit of human kind is wrong. The strongest weapon is not the nuclear bomb. The strongest material is not steel. Your brain is not the fastest computer on the earth. The sky is not the limit. Humanity has not reached it full potential. How can I make these statements? I am informed. There is a revolution coming, it may be bloody, but more than likely it will not be. There will be casualties, maybe not human ones. This is not a military revo...
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Ozone Molecules Ozone Layer
265 wordsNASA and EU Report Massive Arctic Ozone Loss Scientists from NASA and the European Union blamed the long, cold winter and human-made pollution for one of the largest ozone losses to record. The study was conducted between January and March with the use of NASA? s high-tech ER- 2 plane. This plane is able to reach high altitudes in order to check for ozone depletion. The measurements taken by the ER- 2 concluded that the ozone above the arctic has decreased nearly 60 percent. These measurements w...
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Ozone Layer Ultraviolet Radiation
1,027 wordsOzone is an important molecule in maintaining the homeostasis in the environment. Ozone, the molecule O 3, makes a layer in the stratosphere, situated 10 to 15 kilometers from the earths surface. The dioxide molecule, O 2 and Oxygen atom O, collide with each other result in the formation of Ozone, O 3. In this reaction, the molecule O 3 contains an excess of energy. Once the molecule is formed, it is not stable enough to last long. The energy-rich O 3 molecules discards the excess energy by coll...
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