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Bio fuels of Yeast fermentation - Introduction Biofuels are an importance source of fuel due to the cause that they are infinite and can be found easily compared to fossil fuels. Fossil fuels are finite, hard to find and are not cost-effective as biofuels are. Another good thing about biofuels is that don’t contribute to global warming as much as fossil fuels do. Biofuels are mainly used for as a source of energy and sustainable transport. The ways that these biofuels are produces is that fact they convert living organism’s derivatives into biomass and use it as a fuel source (European Environment Agency, 2011)....   [tags: Carbon Dioxide, Glucose Solution]
:: 4 Works Cited
915 words
(2.6 pages)
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Home Remedies for Yeast Allergy - Home Remedies for Yeast Allergy The prime use of yeast is to ferment food items. Some food items that contain yeast include bread, cheese, wine, beer, cheese, vinegar, mushrooms, and dried fruits. Yeast belongs to the fungi family and is a microorganism that is found in the body and many food items that we eat everyday. Yeast is not harmful when taken in smaller amount and does not cause any kind of imbalance. When the amount of yeast in the body increases, the body may develop some allergic symptoms....   [tags: Health] 934 words
(2.7 pages)
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The Importance of Yeast for Humans - Yeast is a single- celled fungi which may grow fast if it is in the right condition and environment (The University of Arizona, n.d.). This fungi is egg shaped and very small and can only be seen with a microscope. The cell has a very thin membrane to it (HowStuffWorks, n.d.). Yeast are found in the water, in soil, on the skins of humans and animals, and on the surface of plants. A yeast cell reproduces asexually by budding. However, when conditions are adverse the cell reproduces sexually until conditions return to normal....   [tags: cell, fungi, reproduce, sugar, temperature] 704 words
(2 pages)
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Pathogenic Yeast: Cryptococcus Neoformans - Introduction Cryptococcus neoformans is a pathogenic yeast found in soil, plants, and animals. In humans infection occurs via inhalation and deposition of spores in the lungs, in most cases. In healthy people, infection will trigger an immune response via alveolar macrophages or dendritic cells. This leads to restriction of the pathogens to benign granulomas. Exposure to Cryptococcus neoformans leads to disease in immunocompromised patients and it can be fatal. Indeed, there is a high incidence of death in HIV patients who develop pneumonia and meningitis following infection....   [tags: lungs, degradative enzymes, drugs] 1376 words
(3.9 pages)
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The Affects of Different Yeast on the Rate of Fermentation - AIM: To see how different yeast affect and influence the rate of fermentation, how much alcohol is being produced and how this affects the overall quality of wine produced. BACKGROUND INFORMATION: Alcohol, is mostly thought of as ethanol which is the alcohol which is found in alcoholic beverages such as wine and beer. But there are many different varieties of alcohol such as methanol, propanol and butanol. In chemistry terms “alcohol” is a compound of a hydroxyl group which is covalently bonded to a carbon chain which can be seen in figure 1....   [tags: Chemistry ] 1156 words
(3.3 pages)
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The Effect of Sugar Substitutes on Yeast Respiration - Introduction The purpose of this investigation is to test the effects of multiple sugar substances on the respiration of yeast. Most people think of yeast when they think of what makes bread rise, cheese, alcoholic beverages, or other food products. Another type of yeast can also cause yeast infections, an infection of the skin. Yeasts (Saccharomyces) are tiny, microscopic organisms with a thin membrane and are usually oval or circular-shaped. They are a type of single-celled fungi of the class Ascomycetes, capable of processing sugar into alcohol and carbon dioxide (CO2 ) ; this process is known as fermentation....   [tags: microscopic organisms, health issues]
:: 12 Works Cited
1110 words
(3.2 pages)
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How to Stop Candida Yeast Infections - ... As discussed earlier, spores and molds procreate on left-over food items during night, even in the refrigerator, it is better to stay away from them in order to enjoy safe candida diet. I have noticed that a candida patient are susceptible to various types of allergies and also vulnerable to many chemicals along with breathing-in sensitivities. With reduction of yeast and sugary food items and drinks, these allergies and sensitivities get better and over a period of time they get eradicated totally, which in turn improve, espicially, the digestive system....   [tags: alcohol, body, children, behavior] 883 words
(2.5 pages)
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Fermentatiom By Yeast - Fermentation of glycine, water, sucrose, galactose, and glucose as induced by yeast. ABSTRACT This lab attempted to find the rate at which Carbon dioxide is produced when five different test solutions: glycine, sucrose, galactose, water, and glucose were separately mixed with a yeast solution to produce fermentation, a process cells undergo. Fermentation is a major way by which a living cell can obtain energy. By measuring the carbon dioxide released by the test solutions, it could be determined which food source allows a living cell to obtain energy....   [tags: essays research papers] 1325 words
(3.8 pages)
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Rate of Respiration in Yeast - Rate of Respiration in Yeast Aim: I am going to investigate the rate of respiration of yeast cells in the presence of two different sugar solutions: glucose, sucrose. I will examine the two solutions seeing which one makes the yeast respire faster. I will be able to tell which sugar solution is faster at making the yeast respire by counting the number of bubbles passed through 20cm of water after the yeast and glucose solutions have been mixed. Prediction: I predict that the glucose solution will provide the yeast with a better medium by which it will produce a faster rate of respiration....   [tags: Papers] 1551 words
(4.4 pages)
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The Effect of Temperature on Yeast Respiration - The Effect of Temperature on Yeast Respiration PLAN Aim: To determine the effect of temperature upon respiration of Yeast. Prediction: I predict that the respiratory rate of the yeast will increase in speed as the temperature of the water increases. However, it may reach a peak, and slowly decline as the temperature increases further. My reason for the above prediction is that, anyone who has cooked, knows that yeast is supposed to respond in warm water, so I believe that the warmer the water, the more bubbles of CO² produced....   [tags: Papers] 1406 words
(4 pages)
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Yeast - Yeast Yeast are a tiny form of fungi or plant-like microorganism (visible only under a microscope) that exist in or on all living matter i.e. water, soil, plants, air, etc. A common example of a yeast is the bloom we can observe on grapes. As a living organism yeast needs sugars, water and warmth to stay alive. In addition, albumen or nitrogenous material are also necessary for yeast to thrive....   [tags: Free Essays] 410 words
(1.2 pages)
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The Effect of Different Sugar Sources on Yeast Respiration - ... Since 2006, there have been 1,500 species of yeast identified by scientists. Yeasts make up only one percent of all fungal species found in the fungi kingdom. Yeasts can be found anywhere, throughout nature, on top of plants, in soil, and more commonly on the bodies of humans and other animals. Yeast is commonly used when brewing alcohol (beer, wine, and whisky), and for making leavened bread and cheese. Carbohydrates are a major molecule in biological systems, made up of saccharides that can be strung together into disaccharides, trisaccharides, and polysaccharides or as small molecules called sugars....   [tags: sugar substitutes, saccharin] 655 words
(1.9 pages)
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Monitoring the Growth of Yeast - Monitoring the Growth of Yeast Introduction Yeast is a microscopic fungus, of which there are hundreds of species. It is extremely important brewing ingredient because different strains give different beer types their distinctive and characteristic flavors. When a brewery has found an ideal yeast, it will be retained for many years. However, fresh batches are produced regularly from samples kept under special laboratory conditions to prevent the built up of microbiological contamination....   [tags: Papers] 715 words
(2 pages)
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Anaerobic Respiration of Yeast - Anaerobic Respiration of Yeast Aim: To investigate the effect of temperature on anaerobic yeast respiration. Basic outline plan: I plan to force a solution of yeast and glucose to anaerobicly respire. I plan to measure the gas collected at allotted intervals during a set period of time, when the solution is at different temperatures. I will need equipment to accurately measure the volume of gas collected, and an indicator to show me that all no oxygen is present in my solution....   [tags: Papers] 1529 words
(4.4 pages)
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Gas Production by Yeast - Gas Production by Yeast The apparatus we used in the first experiment are as follows: Syringe, fresh yeast, three solutions of glucose at concentrations of 1%, 5% and 10%, enamel dish, boss head, small crystallising dish, glass rod, spatula, 10cm measuring cylinder, stop clock, thermometers and a water bath. Prediction I predict that as I increase the concentration of glucose, the more bubbles will be produced. Method My partner and I placed one spatula of fresh yeast into a glass beaker, 5cm3 of 1% glucose was added to the beaker slowly bit at a time, my partner and I mixed the two together thoroughly....   [tags: Papers] 721 words
(2.1 pages)
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Yeast Two-Hybrid - The initial transformation task required two yeast strains (both as Mav203; Leu–, Trp–, His–), with one containing the pDBLeuDa4 bait plasmid, and the other with just the pDBLeu plasmid. The two strains were each transformed with a pPC86DMID1(Y) prey plasmid, where (Y) referred to a full-length positive control (MID1) , a DBB strain (MID1DBB), and a DCC strain (MID1DCC). The transformation process with the two strains and three prey plasmid DNAs resulted in 6 (2x3) transformation mixtures (Table 1)....   [tags: Biology, DNA] 1209 words
(3.5 pages)
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Can Antibiotics Be Found in Plants? - I chose this topic is because there are so many types of plants and foods that have antibiotics in them but lots of people don’t know that. The scientists that make fake antibiotics don’t just kill the bad antimicrobials they also kill of the good antimicrobials. I want to find a natural source of antibiotics grows abundantly so we can make antibiotics that only kill the bad antimicrobials. I could make pills that do the same thing that antibiotics do but without all of the many side effects. If I could make natural antibiotic pills I could get them manufactured by doctors at hospitals and sell the natural antibiotics....   [tags: immune, yeast, foods]
:: 6 Works Cited
695 words
(2 pages)
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Signs, Symptoms, and Treatments for Candidiasis - ... In the most severe cases, candida can travel throughout the body, causing a type of blood poisoning called candida septicemia”(Silverman 1). “ Candidiasis of the blood and inner organs are extremely rare. The effects of candida on the endocrine, immune, and nervous systems are caused by changes in absorption of nutrients rather than by the candida itself” (Silverman 1).Some of the signs and symptoms are: a cottony feeling of the mouth, loss of taste, creamy white patches of the mouth, difficulty swallowing, pain, burning mouth or tongue, painful cracks at the corners of the mouth and thick whitish patches on the oral mucosa....   [tags: thrush, infection, yeast] 2043 words
(5.8 pages)
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Yeast Investigation - Yeast Investigation Introduction In this investigation I am going to try and find the optimum temperature at which the new strain of yeast respires using trial and improvement. I will test from 20°c to 70°c as this is the most suitable. This means that little heating will be needed to get the maximum respiration in the yeast and therefore the most efficient alcohol production. Yeast respires glucose an aerobically producing carbon dioxide and ethanol as waste products....   [tags: Papers] 458 words
(1.3 pages)
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Fungal Infections in Immunocompromised Hosts - ... In addition, Candida albicans possesses cAMP dependant pathways such as Efg1 transcription factor that controls and regulates its morphogenesis. The species also secretes virulent factors: phospholipase A, B and C which are hydrolytic and proteolytic to destroy many host factors, and speed up adherence and penetration into the host. Consequently, increasing fungal infections are seen in immunocompromised host mainly: HIV and cancer patients. More research is desirable to reduce mortality and morbidity caused by this yeast pathogen....   [tags: patients, infections, yeast] 1235 words
(3.5 pages)
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Whiskey from Sratch Malting - Whiskey from scratch Malting Malting is fundamentally controlled germination and is stopped before the grain shoots start to grow. This stage is broken up into three sub-stages; steeping, germination and kilning. Steeping is where the grain is soaked with water because the grain embryo will only grow immersed in water. The water used in steeping must be alkaline to help prevent bacteria souring of the water. Steeping is usually done for 48 hours at 14 °C and the moisture content is increased from 12 % to 45 % (Boulton, 2013)....   [tags: alpha and beta amylase, yeast]
:: 33 Works Cited
1218 words
(3.5 pages)
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The Effect of Temperature on the Rate of Respiration in Yeast - The Effect of Temperature on the Rate of Respiration in Yeast Preliminary Experiment Aim To investigate the time it takes for the yeast in glucose suspension to reach the same temperature as the water it is placed in. Apparatus ========= · Stopwatch · Plastercine · 2 Thermometers · Ice Cream Tub · Kettle · Syringe Method ====== · First I will fill up the ice cream tub with water at one of the temperatures I would be using for the main experiment (80degrees will be tested) · Next I will check the temperature of the yeast in the syringe and record it....   [tags: Papers] 1588 words
(4.5 pages)
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The Effect of Temperature on the Rate of Respiration in Yeast - The Effect of Temperature on the Rate of Respiration in Yeast I have chosen to investigate the affect temperature has on the rate of respiration in yeast. I will use an experiment to determine whether the yeast's rate of respiration will be quicker, slower or if it does not change when the temperature is varied. Scientific Knowledge The first thing to say about enzymes is that they are proteins and they are found in all types of organisms from humans to viruses....   [tags: Papers] 1232 words
(3.5 pages)
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Investigating the Effect of Temperature on the Fermentation of Yeast - Investigating the Effect of Temperature on the Fermentation of Yeast To fully investigate the effect of temperature on the rate of fermentation of yeast Background Information Yeast is a single-cell fungus, occurring in the soil and on plants, commonly used in the baking and alcohol industries. Every living thing requires energy to survive and through respiration, glucose is converted into energy. There are two types of respiration available to living cells are: 1....   [tags: Papers] 3692 words
(10.5 pages)
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Yeast Respiration Experiment - Yeast Respiration Experiment Temperature (°C) [IMAGE]Number of Bubbles 10 0 20 14 30 17 40 17 50 19 60 24 70 35 80 48 Data Analysis and Conclusion The data shows a clear rise in yeast respiration as the temperature is raised. Although an optimum temperature is not evident, it can be seen that temperatures exceeding 60°C speed up the reaction. This shows the general rule that reactions become faster when the temperature is increased....   [tags: Papers] 355 words
(1 pages)
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Immobilized Enzymes (Yeast) - Immobilized Enzymes (Yeast) Abstract Catalase is an enzyme found in living cells and is used to break down peroxides. Yeast cells, which contain catalase, are used to catalyse the decomposition of hydrogen peroxide solution into water and oxygen gas. The yeast cells were immobilized in sodium alginate beads in this experiment. Immobilized enzymes are widely used in biotechnology processes. They can be reused and is more stable at extremes of temperature and pH, thus improves the economy of the process....   [tags: Papers] 2880 words
(8.2 pages)
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The Effect of Temperature on the Rate of Reaction of Yeast - The Effect of Temperature on the Rate of Reaction of Yeast Aim My aim is to view the effects of different temperatures on the rate of respiration of yeast in a glucose solution. I will do this by measuring the rate of which carbon dioxide is given off (CO2) by the yeast. Scientific knowledge ==================== From previous experiments I have learnt several things about yeast and enzymes. I have learnt that an enzyme is a natural catalyst, (something that speeds up the experiment without altering the out come.) Yeast is a fungus that is used in fermentation this is because it respires anaerobically and aerobically, the anaerobic respiration is the use...   [tags: Papers] 1309 words
(3.7 pages)
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The Effect of Temperature on Anaerobic Respiration of Yeast - The Effect of Temperature on Anaerobic Respiration of Yeast We wanted to find the effect of temperature on anaerobic respiration of yeast. We investigated how a mixture of yeast, water, sugar, and flour were affected. Diagram ======= Apparatus ========= 1g of yeast 0.5g of sugar 10g of flour 6 measuring cylinders - to put the sachets in and the 20cm3 of water Measuring cylinders to measure the water Thermometers - to keep the same temperature in the water baths Water baths - at 20ºC, 30ºC, 40ºC, 50ºC, 60ºC Hot air oven - at 70ºC Beakers - to use to put the yeast mixture in the cylinders....   [tags: Papers] 1044 words
(3 pages)
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Factors that Affect the Rate of Respiration in Yeast - Factors that Affect the Rate of Respiration in Yeast Introduction ============ Yeast is one of the living cells, which can respire aerobically, and anaerobically in this investigation I am just taking into consideration respiration as whole. The equation of respiration in yeast is: Equation: There are different variables in this experiment. These consist of the range in temperature, concentration of glucose, amount of hydrogen carbonate solution used and amount of water used for the water bath....   [tags: Papers] 1643 words
(4.7 pages)
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The Effect of Temperature on the Rate of Respiration in Yeast - The Effect of Temperature on the Rate of Respiration in Yeast There are two types of respiration in yeast: Aerobic: [IMAGE] Anaerobic: Glucose [IMAGE] Carbon dioxide + ethanol + energy Respiration is controlled by enzymes, which are proteins which speed up one or more biological reactions. Within any cell many chemical reactions are going on at any one time. Yeast has many different types of enzymes that speed up respiration. Prediction I predict that as temperature increases, the rate will also increase, until a certain optimum temperature, after which, the rate will decrease until the rate is zero as respiration has stopped completely....   [tags: Papers] 1871 words
(5.3 pages)
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Investigating How Sugars are Metabolised by Yeast - Investigating How Sugars are Metabolised by Yeast Aim The aim of this experiment is to investigate which of the five different forms of sugars namely; glucose, fructose, sucrose, maltose and lactose undergo the most metabolisms by yeast. Variables Independent Variable Type of sugar Controlled Variables Temperature of water Amount of yeast Time of reaction Dependant Variable Amount of Carbon dioxide produced during the metabolic reaction Apparatus List Electronic Stopwatch Thermometer 10cm³ syringe Burette Thin rubber tubing Hot Water bath Stirring rod Clamp Stand Diagram Method * Prewarm Yeast and...   [tags: Papers] 1203 words
(3.4 pages)
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Different Types of Fermentations - ... Belonging to a group of fungi, yeast is a microscopic one-celled organism. Yeasts are found in the soil, water, on the surface of plants, and on the skin of humans. Like other fungi, yeasts obtain food from the organic matter around them; they secrete enzymes that break down the organic matter into nutrients they can absorb. Yeasts obtain food from fructose, glucose, and other monosaccharaides (simple sugars), which are found in most fruits. Yeast enzymes chemically break down the sugars into products that the cell can use....   [tags: wine, grapes, grape juice, yeast] 1059 words
(3 pages)
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BEER! Uniting people and events since yeast met sugar! - ALASKA Ales On Top Of The World BEER. Uniting people and events since yeast met sugar. Catalyst. (Kat-el-lyst) noun. A substance that precipitates a process or event, especially without being involved in or changed by the consequences. The bonding agent which triggers the adherence or connection of two elements. Alaskans are a social bunch, and all things considered, it’s hard for me to think of anything that has brought more of us together than a good beer. Today, I am here to tell you that I believe Beer is a catalyst....   [tags: Alcohol] 937 words
(2.7 pages)
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An Investigation to Show the Effects of Changing Temperature in Yeast Respiration - An Investigation to Show the Effects of Changing Temperature in Yeast Respiration Brief Investigate one of the variables that effect respiration in yeast. Background Knowledge ==================== Yeast is one of the various single celled fungi that form masses of miniature circular or oval cells by budding. When placed in sugar solution the cells multiply and convert the sugar solution into alcohol and carbon dioxide. Yeasts are used as fermenting agents in baking, brewing and the making of wine and spirits....   [tags: Papers] 848 words
(2.4 pages)
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Investigating Alcoholic Fermentation and the Affects of Yeast on Dough - Biology Lab Report Investigating Alcoholic Fermentation and the Affects of Yeast on Dough Aim: The aim was simply to investigate whether or not yeast had any affect on causing dough to rise when baked and to experiment with alcoholic fermentation eg. to see if it gave off carbon dioxide. Introduction: Following a few weeks of fermentation theory, groups of three to four were assigned and told to conduct a series of experiments involving the affects of fermentation. My group consisted of myself, Won Jin, Brendan and Sun-Ho and we chose to investigate alcoholic fermentation and the affects of yeast on dough, more specifically to see if yeast caused the dough to rise in anyway....   [tags: essays research papers] 952 words
(2.7 pages)
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The Effects of Concentration of Sugar on the Respiration Rate of Yeast - The Effects of Concentration of Sugar on the Respiration Rate of Yeast Investigating the effect of concentration of sugar on the respiration rate of yeast We did an investigation to find how different concentrations of sugar effect the respiration rate of yeast and which type of concentration works best. Respiration is not breathing in and out; it is the breakdown of glucose to make energy using oxygen. Every living cell in every living organism uses respiration to make energy all the time....   [tags: Papers] 1192 words
(3.4 pages)
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Investigation Into the Effect of Temperature On the Rate of Respiration of Yeast - Investigation Into the Effect of Temperature On the Rate of Respiration of Yeast Preliminary Work For my preliminary work, I am working with 35ml of yeast. I think that this is the best volume to use as it is about ¾ of a test tube full, and it allows for the yeasts expansion when heated. I am trying to find out the best range of temperatures to be used in finding out the respiration of the yeast, and I am also trying to find an equilibration time that can be used in the main experiment, as the time taken for the yeast to heat up to the desired temperature....   [tags: Papers] 1314 words
(3.8 pages)
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The Effect of Glucose Concentration on Anaerobic Respiration in Yeast - The Effect of Glucose Concentration on Anaerobic Respiration in Yeast Aim:To investigate the effect of glucose concentration on anaerobic respiration in yeast. Equipment list: 2* conical flask Delivery tube with bung Dropper Yeast Glucose Limewater Water bath Stopwatch Measuring Cylinder Method:I am going to do 5 tests & each test will be performed 3 times to get an average result. In one conical flask, I will mix together 25ml of yeast & 25ml of a glucose solution, with a delivery tube with a bung in the top of it and leave it for 5 min so it gets acclimatised; in the other conical flask I will put enough water to cover the end...   [tags: Papers] 750 words
(2.1 pages)
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How Temperature Affects the Rate of Respiration in Yeast Cells - How Temperature Affects the Rate of Respiration in Yeast Cells Aim: The aim of this investigation is to find out how temperature affects the rate of respiration in yeast cells. [IMAGE]Apparatus: The pieces of equipment I will be using are as follows: * Measuring Cylinder (10cm³ and 50cm³) [IMAGE] * Test Tubes * [IMAGE]Distilled Water * [IMAGE]Glucose solution (0.5g-1.0g) [IMAGE] * Yeast suspension (0.5g-1.0g) [IMAGE] * Water Baths (Electronic) [IMAGE] * [IMAGE]Test Tube racks * Gas Syringe (200ml) * Stop Clock [IMAGE] [IMAGE]Method: In a preliminary study,...   [tags: Papers] 873 words
(2.5 pages)
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An Examination and Analysis of the Role of Yeast in the Evolution of Societal and Religious Views of Beer and Alcohol in America - Understanding the process of brewing will help explain the time limitations of brewing and storing beer, and will ultimately help explain how this tug of war came into existence, as the process of brewing itself is largely responsible for the limited availability of beer early in American history. The process begins with malted barley which is heated to, and held at, a temperature between 60o and 71o C. This process is known as mashing and serves to activate the amylase enzymes which convert the complex starches into fermentable and unfermentable sugars....   [tags: brewing processs, anaerobic fermentation]
:: 11 Works Cited
1571 words
(4.5 pages)
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Dr. Indrani Bose's Seminar, “Using RNA Interference to Understand the Virulence and Biology of the Yeast Cryptococcus Neoformans - ... There are a few antifungal medicines in use today, these are Amphotericin B, Flucytosine, and Fluconazole. But there are various negative effects of using these drugs. “The long-term use of drugs that target ergosterol, such as fluconazole or amphotericin B, can result in renal and liver toxicity” (2). Another issue is that Cryptococcus neoformans eventually develops resistance to these medications. Dr. Bose stated that her long term goal is to discover better drugs to eradicate this disease from developing in humans....   [tags: meningoencephalitis, fungus, genes] 771 words
(2.2 pages)
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Population Growth Of Yeast And Effects Of Various Substrates On This Population Growth - Population Growth Of Yeast And Effects Of Various Substrates On This Population Growth Plan: 1. Introduction; Yeast is a unicellular fungus which reproduces asexually by budding or division, as in the case of the genus Saccharomyces, which is important in fermentation in food (walker, 1998). Yeasts are widely distributed in nature. Like bacteria and moulds, they can have beneficial and non-beneficial properties in food production. The most well known examples of yeast fermentation are in the production of alcoholic drinks and the leavening of bread....   [tags: Papers] 1245 words
(3.6 pages)
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Temperature's Effect on the Production of Oxygen From Yeast and Hydrogen Peroxide - Temperature's Effect on the Production of Oxygen From Yeast and Hydrogen Peroxide Planning Aim --- My aim is to discover how temperature effects the production of oxygen from yeast and hydrogen peroxide. I will mix yeast with hydrogen peroxide and use an upturned measuring cylinder to measure how much oxygen is produced. To find out how much hydrogen peroxide and yeast I will use, I will carry out pre-tests....   [tags: Papers] 2104 words
(6 pages)
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The Effect on the Rate of Respiration of Yeast Cells with Glucose when the Temperature is Varied - The Effect on the Rate of Respiration of Yeast Cells with Glucose when the Temperature is Varied Aim The aim of the experiment is to investigate the effect of temperature on the rate of respiration of yeast cells with glucose. As yeast cells use up glucose in respiration, carbon dioxide gas is given off. Measurements of the volume of carbon dioxide gas given off within a set amount of time can be used to measure the rate of reaction. A fast rate of reaction would be indicated by a large volume of carbon dioxide gas being collected within this set amount of time....   [tags: Papers] 4673 words
(13.4 pages)
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The Effect of Substrate Concentration on the Rate of Reaction Between Yeast Catalase and Hydrogen Peroxide - The Effect of Substrate Concentration on the Rate of Reaction Between Yeast Catalase and Hydrogen Peroxide Useful info The Enzyme Catalase is a protein molecule which is found in living cells. It is used to speed up reactions in the cells. It is a very specific enzyme and just performs one particular reaction. Catalase is an enzyme found in cells in potatoes and liver and is used for removing Hydrogen Peroxide from the cells. Hydrogen Peroxide is the poison produced during metabolism....   [tags: Papers] 1242 words
(3.5 pages)
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Investigate the Effect of pH on Immobilised Yeast Cells on the Breakdown of Hydrogen Peroxide - Investigate the Effect of pH on Immobilised Yeast Cells on the Breakdown of Hydrogen Peroxide Safety: ======= * Extreme alkaline and acids are used so must wear gloves, goggles and apron. * Be very careful not to make contact with any of the chemicals, as they will be irritable and some corrosive to the skin and eyes. * There must be no running and any other normal laboratory rules should be followed as usual. * Hydrogen peroxide is corrosive and so should not be touched. * A lab technician should immediately wash up spillages....   [tags: GCSE Chemistry Coursework Investigation] 1534 words
(4.4 pages)
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Alcohol Producing Yeast - Food and energy security have always been essential needs in various ways. This is due to their limited resources and their increasing demand by a growing human population [1, 2, 3]. At the same time demands of ethanol has been increasing since it is considered to be an alternative transportation energy source other than food consumption [4, 5]. Considerable attention has been given to ethanol production from various available sugar substrates such as molasses, sugar cane juice [6]; starchy materials like rice, millet, corn, sorghum, wheat, potato, cassava [3, 5, 7, 8, 9, 10]; as first generation ethanol and cellulosic materials as second generation ethanol [11]....   [tags: Environment, Fossil Fuel, Crude Oil] 540 words
(1.5 pages)
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What Affects the Rate of Breakdown of Hydrogen Peroxide by Enzymes - What Affects the Rate of Breakdown of Hydrogen Peroxide by Enzymes Aim === The aim of this experiment is to find out how temperature and concentration affect the breakdown of hydrogen peroxide by an enzyme (yeast). I hope to achieve reliable results that will confirm my predictions. Prediction ========== I predict that if the concentration is high in the yeast then the speed of oxygen produced in the reaction with hydrogen peroxide will also be high. This is because the amount of yeast that can react with the hydrogen peroxide can get no higher and will have the maximum affect on the reaction....   [tags: Papers] 866 words
(2.5 pages)
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Good Laboratory Practices - ... Yeast is a chemo-organotroph and takes energy from organic compounds. Yeast is typically an aerobe or facultative anaerobe. Some yeasts are opportunistically pathogenic and can cause disease in immunocompromised person. Yeast cells are also responsible for spoilage of food. Yeast changes carbohydrates to alcohol and CO2 by the process called fermentation. This is the reason what makes yeast an important part of brewing industry. Yeast is one of the most studied eukaryotic microbe and is an important model organism....   [tags: practical research skills and tools]
:: 4 Works Cited
2978 words
(8.5 pages)
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Rate of Fermentation - Rate of Fermentation Problem set: Plan an investigation to find out what increases the rate of fermentation. Scientific knowledge: Yeast Yeast is a microorganism which grow by feeding on sugars. In food manufacture, yeast is used in fermentation and leavening. The fungi feed on sugars, producing alcohol (ethanol) and carbon dioxide. The carbon dioxide is used in beer and wine manufacture. In sparkling wines and beer some of the carbon dioxide is retained in the finished beverage....   [tags: Papers] 1030 words
(2.9 pages)
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The Effect Of Substrate Concentration On The Activity Of The Enzyme Catalase - The Effect Of Substrate Concentration On The Activity Of The Enzyme Catalase A Level Biology Project Aims This is an experiment to examine how the concentration of the substrate hydrogen peroxide affects the rate of reaction of the enzyme catalase. Introduction This is a real A-level school project and as such is intended for educational or research purposes only. Extracts of this project must not be included in any projects that you submit for marking. Doing this could lead to being disqualified from all the subjects that you are taking....   [tags: biology experiment, chemistry experiment] 2003 words
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What is Fermentation? - ... You want to fill the conical tube to at least 50 ml of water (Cressy). Take the four conical tubes filled with water and place two in each beaker, to do this you must invert the tube and cover the release hole as to not lose any water (Cressy). Then place the beakers with the tubes in the bath so they can be at the same temperature as the bath (Cressy). Next mark all of your test tubes in number order to be sure which tube contains what concentrations and pH (Cressy). Having mixed a solution to the specifications of 2.5 ml of glucose in all tubes, 3 ml of yeast in 2 tubes of pH 5, 2 tubes of pH 9, and the single pH 7 tube, the remaining two tubes will contain no yeast as they will be neg...   [tags: metabolic process, oxygen molecules]
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The Relationship Between Food Concentration, And Respiratory Activity - The Relationship Between Food Concentration, and Respiratory Activity In this experiment different concentrations of sucrose were tested to determine which leads to the most respiratory activity in yeast. Yeast is a heterotrophic anaerobic fungus which lacks chlorophyll. Yeast is used commercially to ferment the sugars of wheat, barley, and corn to produce alcohol, and in the baking industry to raise or expand dough. Yeast or alcoholic fermentation is the anaerobic process of respiration by which sugars, such as glucose and sucrose, are converted into ethanol and carbon dioxide (CO2 )....   [tags: essays research papers fc]
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A Comparison of the Laboratory and Industrial Processes - A Comparison of the Laboratory and Industrial Processes When going through the process of fermentation in a laboratory they use certain methods to achieve their goals and some of the methods that they use are completely different from the ones that are used in the industry of fermentation. A fermenter is a container that maintains optimum conditions needed to grow a particular organism I will be using different criteria’s to compare the laboratory and industrial process of fermentation in this assignment; some of them are listed below: * Equipment Used * The Quantity of the Product * Method Used * Quality of the Product Before I get righ...   [tags: Papers] 1067 words
(3 pages)
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Mutation of Bacteria from Virus Sensitivity to Virus Resistance - The usage of antifungal agent 5-fluorocytosine (5-FC) as a treatment of cryptococcal diseases has been ineffective due to the development of resistance during the treatment [1]. Block et al. conducted fluctuation analysis in order to characterise the nature of 5-FC resistance to see if the resistance was a result of interaction between yeast cells and 5-FC or due to spontaneous mutation. The procedure was carried out in accordance to the experiment performed by Luria and Delbruck [2]. Initially, the minimal concentration of the 5-FC and 5-fluorouracil (5-FU) that inhibited the growth of Cryptococcus neoformans or simply minimal inhibitory concentration (MIC) was determined....   [tags: antifungal agent, fluorocytosine, treatment]
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The Process of Beer Production - The Process of Beer Production Beer is produced mainly through a process known as fermentation. Fermentation is a result of anaerobic respiration of the yeast in the "wort" – the mash of barley and wheat that the beer is brewed from. How does this work, and what is anaerobic respiration. Some organisms can survive while they get their energy without oxygen gas being directly involved in their "breathing". Respiration is a complex chain of chemical reactions that releases energy from energy-rich molecules, such as sugars....   [tags: Papers] 415 words
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Growing Microorganisms - Growing Microorganisms Introduction/ Aim: Yeast are a tiny form of fungi or plant-like microorganism (visible only under a microscope) that exist in or on all living matter i.e. water, soil, plants, air, etc. The yeast life cycle, like that of all higher organisms, includes a step known as meiosis, where pairs of chromosomes separate to give new combinations of genetic traits. People in today’s society use yeast for controlled fermentation of food and drink; it is also used for baking....   [tags: Papers] 1721 words
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An Experiment to Investigate How Amount of Sugar or Temperature Affects the Rate at Which the Product of Fermentation (carbon dioxide) is Released - An Experiment to Investigate How Amount of Sugar or Temperature Affects the Rate at Which the Product of Fermentation (carbon dioxide) is Released Yeast is a single celled fungus. When it is carried in the wind it sometimes lands on fruit, where it feeds on the sugar. They turn this sugar into ethanol and carbon dioxide. No oxygen Sugar + Yeast à Carbon Dioxide + Ethanol This reaction is known as fermentation. I am going to see the effects of temperature over how much carbon dioxide is released....   [tags: Papers] 585 words
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Investigation Into The Effect Of Changing The Substrate Concentration On The Enzyme Catalyse - Investigation Into The Effect Of Changing The Substrate Concentration On The Enzyme Catalyse Introduction ============ I am experimenting the effect of substrate concentration on the action of the enzyme catalyse. I will investigate this by experimenting to see how long it takes to fill a test tube full of the gas from the reaction, which is oxygen. I will use different amounts of catalyse in the form of yeast to test how long it takes to fill the test tube with oxygen, which is one of the products from the reaction....   [tags: Papers] 1019 words
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Designing, Creating and Calibrating a Timing Device - Designing, Creating and Calibrating a Timing Device Overview: Using our knowledge from Biology, Chemistry and Physics, we were to design a timing device to measure the length of music played on the final day of this project. In our group, we separated into three teams to create three different timing devices. This report is on one of the timing devices, named the Fermentation Clock created by Elaine Wong and Aki Kuboyama. The Fermentation Clock is a simple device in which dilute hydrogen peroxide is added to yeast, which is one of the Biology experiments for studying fermentation....   [tags: Papers] 715 words
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Synthetic Biology: Transplanting an Artificial DNA to a Living Bacterium Mycoplasma - ... This is followed by transplanting the artificial DNA into a living bacterium Mycoplasma capricolum with its own DNA. They then allowed the bacterium which now contains both artificial and synthetic DNA to multiply. This means that the daughter bacteria will contain both artificial and authentic DNA. To remove the authentic DNA bacteria, they used an antibiotic that kills the bacteria with authentic DNA but not the bacteria with artificial DNA. They then allowed the artificial bacteria to produce proteins....   [tags: prokaryotic and eukaryotic] 554 words
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Exploring the Properties and Functions of Enzymes - Exploring the Properties and Functions of Enzymes Introduction In this experiment I will attempt to investigate how the change in temperature effects the catalyse reaction and what the optimum temperature is. Key factors Key factor (variable) Reason for controlling How it is going to be controlled Temperature of hydrogen peroxide H202 I am going to control this variable because if the temperature of the hydrogen peroxide was higher or lower then the right temperature the test wouldn’t be fair and my results could be affected because a different temperature would r...   [tags: Papers] 3628 words
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Preparation of Ethanol and Ethanoic Acid - Preparation of Ethanol and Ethanoic Acid AIM: To obtain pure samples of Ethanol (CH3CH2OH) and Ethanoic Acid (CH3COOH) from fermented Yeast (Saccharomyces Cerevisiae). BACKGROUND INFORMATION: The use of yeast in food production is the oldest and most extensive contribution made by any group of microorganisms. A most common substrate that yeast can work with is GLUCOSE. Glucose is a monosaccharide, which are sweet crystalline sugars that dissolve easily in water to form sweet solutions....   [tags: Papers] 4639 words
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Alcohol and its effect on Society. - Alcohol consumption, production and sale has been an integral part of many societies over the course of human existence. The exact origin of alcohol is as of yet unknown, however it is generally regarded that early farmers noticed the rich aroma and flavour of fermenting fruit (Narconon alcohol rehab, 2010) and as such recreated the substance in consumable amounts. The first ever known record of organised alcohol manufacture dates to approximately ten thousand years, where the drink was produced from fermented honey, also known as mead....   [tags: Alcohol Consumption, Society, Culture, History]
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Histories of Product Regulations an Article by M. Markel - ... Later it produces more mold (fungi) and produces more and more spores and the cycle continues (McDunnigan). Chlorophyll is not needed for fungi to get food from (Urbauer). Tiny holes in the bread are always full with mold spores (Anissimov 1). Fungi gets food from whatever they are growing on (Urbauer). Enzymes are also called proteins (Chen). Molds need water to over throw the light needed for proteins (Chen). Proteins work in mold better in warm temperatures (Chen). Proteins do not work good in cold temperatures (Chen)....   [tags: bread and jam, fda]
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The Effect of Sugar Level on the Rate of Fermentation - The Effect of Sugar Level on the Rate of Fermentation Aim: The aim of this experiment is to find out whether the rate of Fermentation is affected by the amount of sugar. Apparatus: The equipment used is: · Bunsen burner. · Heat proof mat. · Boiling tube. · Delivery tube. · Water bath. · Water flask. · Thermometer. · Stop watch. · Yeast and Sugar. · Digital weighing scale. · Water. · Measuring cylinder. · Test tube. · Tripod Method: · Fill the water bath with water (not to the maximum)....   [tags: Papers] 1042 words
(3 pages)
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The Brewing Process of Beer - The Brewing Process of Beer The first and most important step in brewing is cleanliness. "Brewing is ninety percent janitorial," said Frederick Bowman, founder of Portland Brewing. (Bowman) The first step in the actual brewing process is malting. Malting is what is done to the barley to prepare it for brewing. The steps of the malting process release the starches that are contained in the barley, while minimizing haze and off-flavors. Grain is allowed to soak in 60° F. water to increase the moisture content of the grain to about 40-45%....   [tags: Brewery Alcohol Beer Essays]
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Review of Research Paper on the Interphase of Mitosis - Introduction The eukaryotic cell cycle, mitosis, is a succession of events that occur for the reproduction and growth of these multi-cellular organisms. Characteristic events in mitosis can divide the cell cycle into different stages, or phases. This paper focuses on the interphase of cell cycle, which is when DNA replication occurs, and the cell is engaged in metabolic activities to prepare itself for cell division. The idea that these two processes are related arises much controversy in what their relation is exactly....   [tags: Biology Eukaryotic Cell Cycle] 1278 words
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James Rothman, Randy Schekman and Thomas Südhof's Research on Transport Vesicles - ... It was also found that if temperatures became to high or to low, it would lead to a build up of vesicles at key locations, and prohibit cell transport. When the temperature became to hot class I genes would cause a change in the organelle and cell membranes that would not allow vesicles to bind to target sites, so they could carry out their protein transport. To correct this a class II gene would need to come in and consume the build up of vesicles at target sites to complete the cellular transportation....   [tags: cells, fusion, genes] 645 words
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Effect of Substrate Concentration on Enzyme Activity - Background An enzyme is a biological catalyst which speeds up biochemical reactions, such as digestion and respiration, but they remained unchanged at the end of the process (Walpole, Merson-Davies, and Dann 53). Problem Question What is the effect of the substrate concentration on enzyme activity. Hypothesis As the concentration of the substrate increases, the rate of reaction also increases until it reaches its maximum point where all enzyme molecules are already active due to the solution becomes saturated with the hydrogen peroxide....   [tags: reaction, experiment, plateau ] 1204 words
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Nobel Prize for Cell Signaling Pathways - ... There are two processes that are involved in the bulk transport of large molecules. After these large particles are packaged in vesicles, if the molecules are to be secreted from the cell, the transport vesicles fuse with the plasma membrane in a process called exocytosis. James Rothman discovered that “this process is done very precisely as specific protein complexes on the transport vesicles and specific proteins on the plasma membrane bind together to cause this fusion” (1)...   [tags: cell, regulation, genomic, organisms] 1259 words
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Analysis of the Decomposition Rate of Hydrogen Peroxide With Catalase As a Catalyst - Analysis of the Decomposition Rate of Hydrogen Peroxide With Catalase As a Catalyst Aim: To measure the rate of decomposition of Hydrogen Peroxide with Catalase from a Yeast solution using PH as a variable. Hypothesis: The enzyme Catalase speeds up the Hydrogen Peroxide decomposition as its active sites match the shape of the Hydrogen Peroxide molecule. This process will only work at certain PH levels as the Enzyme sites may become disfigured at extremes. Logic suggests that Catalase will work well at PH7 Neutral, but due to the nature of Catalase removing Hydrogen Peroxide from human body cells a slightly acidic solution might work just as well....   [tags: Papers] 654 words
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Analyzing the Origin of Adaptive Mutations in Saccharomyces Cerevisiae - Biological mutations play an integral role in the long-term survival of populations due to the potential benefit that the genetic variance provides. The main objective in this laboratory was to utilize the replica-plating technique to determine whether copper-tolerant mutants in Saccharomyces cervisiae arise spontaneously or if they are induced by their environment. This type of baker's yeast is ideal for mutation experiments due to the specimens quick reproduction ability. Following several serial dilutions, individual yeast colonies were able to be produced on a agar medium....   [tags: Papers] 1288 words
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Beer Brewing Process - Beer is processed by steeping, boiling, and fermenting malt and hops to make or prepare by mixing, steeping, soaking, or boiling a solid in water. This process has been used by prehistoric nomads even before they learned how to make bread (Raley). In prehistoric times, beer was so valued that it was sometimes used as a form of compensation for workers (Raley). The 1850’s brought the modern era of brewing in the United States with Anheuser-Busch, Miller, Coors, Schlitz, and Pabst brewing companies (Raley)....   [tags: steeping, boiling, fermenting malt & hops]
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Mrs. Goo Cheese - The store that Mrs. Goo-Cheese ran with her sister was located on the shore of the pond. It was made from logs that were flattened on the tops and bottoms with notches on the ends. This allowed the logs to fit together tightly to keep out the wind and the rain. Inside, the walls were lined with shelves containing merchandise that was new while bins made from an assortment of cardboard boxes formed two isles that ran up and down the middle of the building. In one of those bins, Oliver and Timmy were placing the day's crop of radishes....   [tags: marketing short story] 607 words
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Investigation in to the factors that affects the rate of fermentation of Glucose - Investigation in to the factors that affects the rate of fermentation of Glucose Aim: To investigate the factors that affects the rate of fermentation of Glucose. Background knowledge. ENZYMES Fermentation is a form of an anaerobic respiration where by glucose is partially broken down so only a small amount of energy is released. The yeast cells use the enzymes, ZYMASE to break down sugars unable to obtain. GLUCOSE CARBON DIOXIDE + ETHANOL(+ENERGY) C6 H12 O6 6CO2 + C2H5OH (210KJ) Enzymes have several properties....   [tags: GCSE Chemistry Coursework Investigation] 1250 words
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Investigating the Effect of Concentration on the Rate of Enzyme Catalysed Reaction - Investigating the Effect of Concentration on the Rate of Enzyme Catalysed Reaction To investigate the effect of concentration on the rate of enzyme catalysed reaction I must know all the factors that affect it in order to investigate in this. Here are all the factors: Temperature- Enzyme like it warm but not too hot. Enzymes are biological catalysts, which speed up chemical reactions. They work most efficiently at the optimum point (37°C). If they are below 37°C they will work slower....   [tags: Papers] 2265 words
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Preparation of Ethanol and Ethanoic Acid - Preparation of Ethanol and Ethanoic Acid Introduction to report ---------------------- This report contains 5 practical experiments to produce ethanoic acid from ethanol. The first practical is the preparation of ethanol from glucose using yeast during the process of fermentation; this has been demonstrated in class. In this practical the glucose is converted into ethanol and carbon dioxide by respiratory enzymes from the yeast. The ethanol solution will be between 5-15% and the ethanol will be separated from the yeast by filtering....   [tags: Papers] 3009 words
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Test Design for Oculopharyngeal Muscular Dystrophy - Test Design for Oculopharyngeal Muscular Dystrophy INTRODUCTION: Oculopharyngeal muscular dystrophy (OPMD) is an inherited neuromuscular genetic disorder. It has an autosomal dominant pattern of inheritance (Fried et al. 1975) in that the abnormal gene can be transmitted from only one parent. A child of an affected parent has a 50% chance of being affected. The disorder is found to be more prevalent among French-Canadians and is characterized by its late onset (approximately 50). Affected persons experience dropping eyelids (optosis), difficulty with swallowing (dysphagia), and some develop shoulder, hip or leg weaknesses (MDA publications 1998)....   [tags: Papers] 2032 words
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Enhancing Bread’s Shelf Life Utilizing Oregano as a Natural Preservative - Introduction BACKGROUND OF THE STUDY Mold is a type of microscopic fungi. The growth of mold can be useful in the production of numerous antibiotics, foods (such as cheese, soy sauce and others), enzymes and beverage but they can also be harmful to humans and some other food. Mold derives the energy to survive from organic matter on which they live. This is the reason why mold causes decomposition in organic matter. Bread molds grow quickly at a temperature between 15°C to 30°C. Molds in bread can be poisonous and can cause infections if eaten....   [tags: Origanum Vulgare]
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