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Free research essays on topics related to: chemical reactions

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  • Test Tube Degrees Celsius
    1,267 words
    Enzyme Action: Testing Catalase Activity Enzymes are proteins that serve as catalysts and accelerate chemical reactions in living organisms. Enzymes accomplish this by lowering the energy of activation of the organism it is acting upon, however enzymes will only lower the energy of activation for specific organisms, reducing chaotic chemical reactions. The reaction is carried out in its entirety in the active site of the enzyme. The substrate (organism acted upon), binds itself into the active s...
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  • Side By Side Endoplasmic Reticulum
    2,193 words
    ... e detoxification processes by which enzymes act on chemicals and drugs to change their structure and reduce their toxicity. The smooth endoplasmic reticulum of skeletal muscle stores calcium ions that function in muscle contraction. The Golgi apparatus is composed of flattened membranous sacs, containing cisternae, that are stacked on each other like dinner plates. The Golgi apparatus modifies, packages, and distributes proteins and lipids manufactured by the rough and smooth endoplasmic ret...
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  • Rate Of Reaction Bunsen Burner
    1,230 words
    Investigate 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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  • Rate Of Reaction Carbon Dioxide
    1,229 words
    ... onward sources, from a textbook, encyclopedia, and preliminary work that I have done in class. I have shown my results on a bar chart and a line graph. On the line graph, I have drawn a curve of best-fit. There were no anomalous results. From my results, and my graph, I have found out that as the temperature of the enzymes (yeast in this case) is increased, the rate of reaction speeds up. However, when the temperature reached a certain point, (about 40 degrees Celsius), the enzymes became de...
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  • Source Of Energy Amino Acids
    1,317 words
    The topic I have chosen is Osteoporosis and how it is related to a deficiency of calcium. Throughout my human nutrition course the importance for proper nutrition and adequate dietary supplements has been constantly emphasized. Nutrition is the science that deals with food and how the body utilizes it. All living things need food to live. Food supplies energy, which people need to perform certain actions and bodily functions. Food also provides substances that the body needs to build and repair ...
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  • Endoplasmic Reticulum Organic Molecules
    1,136 words
    ... m is used to breakdown glycogen to glucose. The endoplasmic reticulum is versatile and grows and shrinks according to the cell's activities. Chloroplasts which are found in plant cells are used in the process of photosynthesis. They fall into the category of plastids but they are differentiated in that they contain chlorophyll. These organelles produce chemical reactions from the energy that the sun gives them. The Golgi complex's structure is made up of many flattened membranes sacs that ar...
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  • Chemical Reactions Three Types
    890 words
    Chemical Chemical Reactions CHEMICAL REACTIONS Chemical reactions are the heart of chemistry. People have always known that they exist. The Ancient Greeks were the firsts to speculate on the composition of matter. They thought that it was possible that individual particles made up matter. Later, in the Seventeenth Century, a German chemist named George Ernst Stahl was the first to speak of chemical reaction, specifically, combustion. He said that a substance called phlogiston escaped into the ai...
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  • Atomic Theory Chemical Reactions
    379 words
    Atomic Dalton Theory Dalton s Atomic Theory John Dalton developed the first useful atomic theory of matter around 1803. In the course of his studies on meteorology, Dalton concluded that evaporated water exists in air as an independent gas. Solid bodies cant occupy the same space at the same time, but water and air could. If the water and air were made of discrete particles, evaporation might be viewed as a mixing of water particles with air particles. He performed a series of experiments on mix...
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  • Fatty Acids Petri Dish
    4,956 words
    Plan The initial variable to be considered will be the effect that caffeine and temperature has on the heart beat and if it has a direct or indirect effect on the daphnia's lifespan. If there is enough time to consider a second variable however, the effects of a temperature or alcohol on the daphnia's body system will also be considered alongside the initial variable of caffeine. These will then be slotted into the same graph which will show us how the figure correspond to the results. In order ...
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  • Greenhouse Gases Nitrous Oxide
    1,193 words
    QUESTION 1: Technology owes Ecology an Apology. Indeed, in my opinion, technology does owe ecology an apology. This is because ecological imbalances were as a result of the Industrial revolution, which could be said to be the beginning of the non-ending technological advancement cycle. During Industrial revolution, we began altering or climate and environment through changing agricultural and industrial practices. Before the industrial revolution, human activity released very few gases into the ...
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  • Red Blood Cells Carbon Dioxide
    1,614 words
    Effect Of Photosyntheses And Respiration On The Effect Of Photosyntheses And Respiration On The Environment Introduction: The environment can be defined as the surroundings in which as organism lives, including the climate, the physical and chemical conditions of its habitat and its relationship with other living things. Given the above understanding, it is therefore important that the right environment factors are in existence for some chemical reactions to take place. In the absence of optimum...
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  • Hydrogen Peroxide Graduated Cylinder
    1,654 words
    Situations That Govern the Pace of an Enzymatic Reaction: Enzyme Concentration, Temperature, and phone Saunders BSC 1010 C; T, R: 11: 50 - 12: 05 Lab: T: 12: 15 - 3: 05 INTRODUCTION: An enzyme is any one of many specialized organic substances, composed of polymers of amino acids that act as catalysts to regulate the speed of the many chemical reactions involved in the metabolism of living organisms. The word enzyme comes from the Greek phrase? en yeast? . Many scientists who studied enzymes in t...
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  • Earth Surface Theory Is Based
    1,417 words
    According 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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  • Carbon Dioxide And Water H 2 O
    640 words
    This paper is on the processes of fermentation, cellular respiration, photosynthesis, diffusion, osmosis, and enzyme activity. What do these six processes have in common? Fermentation is a chemical process that breaks down organic materials. This process is carried out by such microbes as bacteria, molds, and yeasts. For example, molds or fungi act upon mixtures of molasses and mineral salts to produce penicillin. Yeast breaks down sugar gotten from malted grain into ethyl alcohol and carbon dio...
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  • Amino Acids Fatty Acids
    807 words
    Today, weve realised that the very first life on Earth was indeed originated from abiotic surroundings. In fact, organic molecules have been successfully generated from abiotic elements by scientists To understand how this creation of life from abiotic material occured, we have to consider a critical idea. Life originated from its abiotic surroundings. Thus, it is important for us to learn about the physical and chemical environments of the primitive Earth. The atmosphere of primitive Earth cons...
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  • Upper Atmosphere Ozone Layer
    591 words
    Ozone, pronounced OH Zone, is a form of oxygen that is present in the earths atmosphere in small amounts. Ozone in the upper atmosphere is a major factor in making life on earth possible. But ozone in the lower atmosphere contributes to air pollution. Ozone is used commercially in water purification process and as a bleaching agent. Ordinary oxygen molecules have two oxygen atoms, ozone has three. Ozone is produced naturally through photochemical and electric discharge reactions. Photochemical p...
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  • Mad Cow Disease Anti Psychotic Drugs
    2,398 words
    Table of contents 1. Memory Mechanism Found At Nerve Cell Connections In The Brain Source: Science Daily Date published: May 19, 2000 2. Drug Psychotherapy Combo Found Highly Effective in Depression Study Source: Science Daily Date published: May 24, 2000 3. Suckling Behavior of Newborn Rats Can Be Manipulated Through Use of Scents, New Research Shows Source: Science Daily Date published: May 29, 2000 4. Study Opens Doors to Significant Changes in Medications for Schizophrenia Source: Science Da...
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  • Rapid Eye Movement 2000 From The World Wide
    3,095 words
    Dreams When we sleep we do much more than just rest our weary bones; we tap into our subconscious mind (Ullman and Zimmerman 1979). The subconscious has much to offer about oneself. The average human being spends one third of their life in sleep and during each sleep approximently two hours is spent dreaming (Ullman and Zimmerman 1979). These dreams are important because they are the voice of our subconscious. Dreams and theories on dreams go as far back as 2000 BC in Egypt. One of the first org...
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  • Chemical Reactions Environmentally Friendly
    1,110 words
    OXFORD AND Untitled OXFORD AND CAMBRIDGE SCHOOLS EXAMINATION BOARD. General Certificate Examination Advanced Level Chemistry (Salter's) Paper 3 mock. ROBERT TAYLOR U 6 JW. THE ROLE CATALYSTS IN CHEMICAL REACTIONS, THEIR IMPORTANCE IN INDUSTRY, PROBLEMS AND NEW DEVELOPMENTS. A Catalyst is a substance that alters the rate of a reaction. The catalyst remains unchanged at the end of the reaction. The process is called catalysis. In this report I aim going to explain the role of catalysts in chemical...
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  • Play A Role Chemical Reactions
    1,867 words
    PROBLEM: BATTERIES TEND TO FAIL AT EXTREME TEMPERATURES. TESTABLE QUESTION: HOW AND WHY DO DIFFERENT BATTERY TYPES FAIL AT EXTREME TEMPERATURES? ELECTRO CHEMISTY BATTERY FAILURE HONORS CHEMISTY RESEARCH PROJECT HISTORY OF THE BATTERY The battery s origins may be followed back to very ancient times. We know that many of the wise men could have been exploring and testing electricity. For example, a clay vase, thought to be several thousand years old, was discovered in 1932 near Baghdad. It contain...
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