Antonie van Leeuwenhoek, Father of Microbiology

Antonie van Leeuwenhoek, Father of Microbiology Anton van Leeuwenhoek (October 24, 1632–August 30, 1723) invented the first practical microscopes and used them to become the first person to see and describe bacteria, among other microscopic discoveries.  Indeed, van Leeuwenhoeks work effectively refuted the doctrine of spontaneous generation, the theory that living organisms could spontaneously emerge from nonliving matter. His studies also led to the development of the sciences of bacteriology and protozoology. Fast Facts: Anton van Leeuwenhoek Known For:  Improvements to the microscope, discovery of bacteria, discovery of sperm, descriptions of all manner of microscopic cell structures (plant and animal), yeasts, molds, and moreAlso Known As: Antonie Van Leeuwenhoek, Antony Van LeeuwenhoekBorn:  Oct. 24, 1632 in Delft, HollandDied:  Aug. 30, 1723 in in Delft, HollandEducation:  Only basic educationPublished Works:  Arcana naturÅ“ detecta, 1695, a collection of his letters sent to the Royal Society of London, translated into Latin for the scientific communityAwards:  Member of the Royal Society of LondonSpouse(s): Barbara de Mey (m.1654–1666),  Cornelia Swalmius (m. 1671–1694)Children: MariaNotable Quote:  My work...was not pursued in order to gain the praise I now enjoy, but chiefly from a craving after knowledge. Early Life   Leeuwenhoek was born in Holland on October 24, 1632, and as a teenager he became an apprentice at a linen drapers shop. Although it doesnt seem a likely start to a life of science, from here Leeuwenhoek was set on a path to inventing his microscope. At the shop,  magnifying glasses were used to count the threads and inspect the quality of cloth. He was inspired and taught himself new methods for grinding and polishing tiny lenses of great curvature, which gave magnifications up to 275x (275 times the subjects original size), the finest known at that time. Contemporaneous Microscopes People had been using magnifying lenses since the 12th century and convex and concave lenses for vision correction since the 1200s and 1300s. In 1590, Dutch lens grinders Hans and Zacharias Janssen constructed a microscope with two lenses in a tube; though it may not have been the first microscope, it was a very early model. Also credited with the invention of the microscope about the same time was Hans Lippershey, the inventor of the telescope. Their work led to others research and development on telescopes and the modern compound microscope, such as Galileo Galilei, Italian astronomer, physicist, and engineer whose invention was the first given the name microscope. The compound microscopes of Leeuwenhoeks time had issues with blurry figures and distortions and could magnify only up to 30 or 40 times. Leeuwenhoek Microscope Leeuwenhoeks work on his tiny lenses led to the building of his microscopes, considered the first practical ones. They bore little resemblance to todays microscopes, however; they were more like very high-powered magnifying glasses and used only one lens instead of two. Other scientists didnt adopt Leeuwenhoeks versions of microscopes because of the difficulty in learning to use them.  They were small (about 2 inches long) and were used by holding ones eye close to the tiny lens and looking at a sample suspended on a pin. Leeuwenhoek Discoveries With these microscopes, though, he made the microbiological discoveries for which he is famous. Leeuwenhoek was the first to see and describe bacteria (1674), yeast plants, the teeming life in a drop of water (such as algae), and the circulation of blood corpuscles in capillaries. The word bacteria didnt exist yet, so he called these microscopic living organisms animalcules. During his long life, he used his lenses to make pioneer studies on an extraordinary variety of things- living and nonliving- and reported his findings in more than 100 letters to the Royal Society of England and the French Academy. Leeuwenhoeks first report to the Royal Society in 1673 described bee mouthparts, a louse, and a fungus. He studied the structure of plant cells and crystals, and the structure of human cells such as blood, muscle, skin, teeth, and hair. He even scraped the plaque from between his teeth to observe the bacteria there, which, Leeuwenhoek discovered, died after drinking coffee. He was the first to describe sperm and postulated that conception occurred when a sperm joined with an ovum, though his thought was that the ovum just served to feed the sperm. At the time, there were various theories of how babies formed, so Leeuwenhoeks studies of sperm and ovum of various species caused an uproar in the scientific community. It would be around 200 years before scientists would agree on the process. Leeuwenhoeks View on His Work Like his contemporary  Robert Hooke, Leeuwenhoek made some of the most important discoveries of early microscopy. In one letter from 1716, he wrote, My work, which Ive done for a long time, was not pursued in order to gain the praise I now enjoy, but chiefly from a craving after knowledge, which I notice resides in me more than in most other men. And therewithal, whenever I found out anything remarkable, I have thought it my duty to put down my discovery on paper, so that all ingenious people might be informed thereof. He did not editorialize on meanings of his observations and acknowledged he was not a scientist but merely an observer. Leeuwenhoek was not an artist either, but he worked with one on the drawings he submitted in his letters. Death Van Leeuwenhoek also contributed to science in one other way. In the final year of his life, he described the disease that took his life. Van Leeuwenhoek suffered from uncontrollable contractions of the diaphram, a condition now known as Van Leeuwenhoek disease. He died of the disease, also called diaphragmatic flutter, on August 30, 1723, in Delft. He is buried at the Oude Kerk (Old Church) in Delft. Legacy Some of Leeuwenhoeks discoveries could be verified at the time by other scientists, but some discoveries could not because his lenses were so superior to others microscopes and equipment. Some people had to come to him to see his work in person. Just 11 of Leeuwenhoeks 500 microscopes exist today. His instruments were made of gold and silver, and most were sold by his family after he died in 1723. Other scientists did not use his microscopes, as they were difficult to learn to use. Some improvements to the device occurred in the 1730s, but big improvements that led to todays compound microscopes didnt happen until the middle of the 19th century. Sources â€Å"Antonie Van Leeuwenhoek.†Ã‚  Famous Biologists Antonie Van Leeuwenhoek Comments, famousbiologists.org.Cobb, M. An Amazing 10 Years: The Discovery of Egg and Sperm in the 17th Century. Reproduction in Domestic Animals 47 (Suppl. 4; 2012), 2–6, Faculty of Life Sciences, University of Manchester, Manchester, UK.Lane, Nick. The Unseen World: Reflections on Leeuwenhoek (1677) ‘Concerning Little Animals.’  Philosophical Transactions of the Royal Society of London Series B, Biological Sciences 370 (1666) (April 19, 2015): 20140344.Samardhi, Himabindu Radford, Dorothy M. Fong, Kwun. (2010). Leeuwenhoeks disease: Diaphragmatic flutter in a cardiac patient. Cardiology in the Young. Cardiology in the Young. 20. 334 - 336.Van Leeuwenhoek, Anton. Letter of June 12, 1716, to the Royal Society, quoted by the University of California Museum of Paleontology, Berkeley.Vision Engineering. Later Developments.

Magic Colored Milk Science Project

Magic Colored Milk Science Project If you add food coloring to milk, not a whole lot happens, but it only takes one simple ingredient to turn the milk into a swirling color wheel. Here is what you do. Magic Milk Materials 2% or whole milkfood coloringdishwashing liquidcotton swabplate Magic Milk Instructions Pour enough milk onto a plate to cover the bottom.Drop food coloring into the milk. Dip a cotton swab in dishwashing detergent liquid.Touch the coated swab to the milk in the center of the plate.Dont stir the milk; it isnt necessary. The colors will swirl on their own as soon as the detergent contacts the liquid. How the Color Wheel Works Milk consists of a lot of different types of molecules, including fat, protein, sugars, vitamins, and minerals. If you had just touched a clean cotton swab to the milk (try it!), not much would have happened. The cotton is absorbent, so you would have created a current in the milk, but you wouldnt have seen anything especially dramatic happen. When you introduce detergent to the milk, several things happen at once. The detergent lowers the surface tension of the liquid so that the food coloring is free to flow throughout the milk. The detergent reacts with the protein in the milk, altering the shape of those molecules and setting them in motion. The reaction between the detergent and the fat forms micelles, which is how detergent helps to lift grease off of dirty dishes. As the micelles form, the pigments in the food coloring get pushed around. Eventually, equilibrium is reached, but the swirling of the colors continues for quite a while before stopping.

Flu Vaccination- Benefits and Contra-indications Research Paper

Flu Vaccination- Benefits and Contra-indications - Research Paper Example Active immunity allows the immune system to recognize infected bacteria or viruses as soon as the body comes in contact with them and triggers the production of anti-bodies to tackle them. Vaccination against diseases resists the spread of harmful illnesses in a society, contributing towards a healthy environment. Influenza, more commonly known as Flu, is a respiratory illness that is contagious and is characterized by symptoms like fever, body ache, coughing, sneezing and cold. It can become an epidemic because of its viral nature and once initiated, it is imperative to contain the spread of this disease through proper medication and vaccination. Flu vaccination is generally an annual vaccination program that encourages individuals to ensure protection from the attack of influenza through the year. Since influenza is of several types, it ensures protection against the most major kinds of this disease. It generally offers protection from two strains of type influenza A (H1N1 and H3N2) and one strain of type influenza B. This vaccine can be administered through vaccine injections called flu shots, or through inhalation. Flu vaccination is not mandatory but encouraged in many countries by their respective health ministries. It is more commonly given to young children, pregnant women, elderly, or individuals with health conditions that make them susceptive to such diseases.

Should the English language be the international language Essay

Should the English language be the international language - Essay Example English has now become the language of international communication† (Kirkpatrick 1). Today English is the official language of many international organizations like the United Nations and the International Olympic Committee. For a language to be given the status of an international language, it needs to meet certain criteria. For example, neutrality, it is important for the language to be neutral. It should be able to express many concepts as a natural language; English is considered one of the most expressive languages as it has more words than any other language. It should have flexibility, where speakers have the flexibility even to coin a new word. English as a language meets these criteria to a certain extent. English also has continuity. It is one of the only languages that come closest to meeting al the criteria, therefore closest to be an international language. Many people believe that learning to read, write, and speak English would give them a better future, with many more opportunities open to them. At a global level, knowing to communicate in English gives people more access to higher levels of the labor market, and enables people to interact at a global level. Knowing English also gives people greater access to growing technologies and therefore, provides wider access to knowledge. It is considered a necessity to know English to survive in a global community where competition is high and so is the survival rate. It is easier for a person who knows to communicate in English to survive in today’s world than for a person who does not know English. It does not matter what the accent of that person is, or whether that person is a native speaker or not. Today, it is important to know English if you wish to benefit from technological and scientific research and benefit from business contacts. English is the primary ‘lingua franca’ language today, which means it is one of the

The Importance of Slavery in the Development of Early America Research Paper

The Importance of Slavery in the Development of Early America - Research Paper Example They started to transport slaves from Africa to America during the sixteenth century. In the subsequent years, slavery became an economic, political and social factor in the development of early America, which resulted in the American Civil War or the American Revolution. This paper analyses the importance of slavery in the political and social development of early America and its contribution to the civil war. South America and North America were entirely different as far as the prominence of slavery was concerned. Negro slavery was absent in the North, whereas it occurred in many forms in the Southern parts of America in the last few centuries. â€Å"There has been one school of thought which regards presence of Negro slavery in the south and its absence in the north as the essence of sectional controversy† (Potter 30). From the onset, slavery had been the most serious cause of sectional conflict (Potter 52). In other words, the views and attitudes of the people in the south ern and northern parts of America were different. People in the North were more liberal in their nature, attitudes and beliefs, whereas people in the South were more conservative in their thoughts. It should be noted that European countries such as Britain were in control of Southren America in the eighteenth century. Britain had colonies in most parts of the world during this period. Africa was in control of Britain during this period, which made the slave transportation from Africa to America an easier task. Howe pointed out that â€Å"almost 14 million Negros were held in hereditary slavery during this period in America† (Howe 52). Slavery in the eighteenth century has created many social changes in America. Exports of slaves from Africa to America happened frequently during this period. Even though an independent American state was established in the eighteenth century, the process of exportation of slaves from Africa to America has not stopped. Americans were not in a mo od to give the luxury they enjoyed due to slavery. To sustain slavery as much as possible, they prevented black people from getting education, income and opportunities for employment. Even though human right issues were discussed very seriously in America during this period, nobody took slavery as a serious human right violation issue until the 1780s. In fact, the black community was not much interested in avoiding slavery in the eighteenth century. They were particular about improving their economic conditions rather than avoiding slavery or acquiring equal status with whites. Poverty was the biggest problem faced by the negros during this period. â€Å"For Negros, economic circumstances were more important than legal status (Slavery) in shaping their conditions of life† (Potter 31). It should not be forgotten that the negros were deprived of opportunities for education and, as a result of that, they were unaware of the things like human rights. For them, acquiring enough fo od at any cost was the major objective of their life. Even though dominant white people did everything possible to sustain slavery in America, they failed to prevent black people from becoming aware of freedom and liberty. For example, black people were used extensively for maritime employment by the white people in the eighteenth century. It was impossible for white people to execute maritime works without slaves. Maritime works were often done without much supervision from the

Comparison Of Environment Between India And Bhutan Environmental Sciences Essay

Comparison Of Environment Between India And Bhutan Environmental Sciences Essay The world is challenged by many environmental issues. Keeping in mind its pros and cons many countries around the world are adopting different methods to combat those issues. With rapidly changing world, it has its own desires to accomplish .Once a peaceful place, now with economic development it has changed a lot. Even rural areas have moved from a stone age to a modern one. The pollution from these modern facilities has highly degraded the pristine environment and thus contributing significantly in global warming. In order to become rich over night, the people from rural areas do carry out poaching activities such as killing of wild boar, tigers, rein, deer ,bears and other endangered species, thus again degrading the environment due to unbalanced natural lifestyle which directly contributes to areas become barren, water sources getting dried and these factors directly contributes to high investment plan in saving both planet earth and human life. With so many economic activities and peoples undying desire to make wealth has resulted in some serious environment concerns. Never the less, as a saying goes necessity is the mother of invention.The economic development activities should take place with sound ecological knowledge. Now with lots of awareness programs on environment conservation being conducted by Royal Government of Bhutan, the people from different districts has geared towards saving the planet earth in their own small ways by doing lots of mitigation works to restore the greenery and go green once again. SOME OF THE ENVIRONMENTAL ISSUES IN BHUTAN Some of the major environmental issues in Bhutan are Deforestation as People in Bhutan are mostly farmers and illiterate who earn their living through agricultural products. Illegal logging of timber has been popular and it is also the part of black marketing for those products. In order to make more room for agricultural works, forests are being felled. Trees are being out for timbers which are sold at double the price. In the wake of these activities, wild life forced to survive in increasingly fragmented spaces around Bhutan. This has lead to loss of biodiversity and degradation of ecological services. Vast areas of forest in Bhutan is destructed for agricultural practices and exploited for products like wood, timber without planting new growth. This is a serious issue which has to be looked upon in Bhutan (CBD, 2002). Due to deforestation, mainly cutting beyond limits for fuel extraction has resulted major land degradation and soil erosions in Bhutan. It is a manmade as well as natural phenomenon .The total area under forest is 72.5% of the country and the cultivated area is only 7.8 %( CSO).There has been also case of minor forest fire caused by the people. With the modern agricultural practice, people in rural areas has cautiously adopted the method of using excess chemical fertilizers and use of heavy equipments such as power tiller which eventually resulted in decline capability to produce agricultural products. Air pollution is defined as undesirable change in physical or biological characteristics of air, water and land brought about by mans activities that may harmfully affect living organisms and other resources. Air pollution resulted in declined crop output and developed concerns about public health. The number of industries are increasing and as a result the GDP has gone up from 0.01% in 1982 to3.2% in1992(MoP 1996).The sources of air pollution are burning of fossils fuels, automobiles, industries like the fertilizer plants, thermal plants, textile industries and steel plants as shown in figure 1. 2. Water pollution is a major problem associated with the developing countries.The major pollutants are the organic matter of the sewer, metallic substances and other inorganic chemicals from the industries, hot water, oil, inorganic fertilizers and pesticides as shown in figure 1.1. Fig1.1Fig1.2 Left: Water pollution.Right: Air pollution. Waste disposal is an emerging problem in Bhutan especially in urban areas such as in Thimphu, Phuentsholing, Gelephu and Bumthang. In the absence of improperly disposed of vacant land. All of these are serious health hazard apart from being eyesores. They boost numbers of insects vector like flies. Mosquitoes, scavengers such as stray dogs, pigs and rats which spread dangerous diseases. The wastes can be classified into: A=Biodegradable-The biodegradable wastes are those that can be decomposed. For example, kitchen wastes, animal dung, etc. B=Non-biodegradable-The non-biodegradable wastes are those that cannot be decomposed and remain as such in the environment. For example, plastics, nuclear wastes, glass, etc. Over grazing is one of the main issues in rural areas as raising cattle and other domestic animals have contributed to livelihood of many people. Usually people in rural areas have access to all sorts of facilities but keep animals at the backyard of our homes is very natural. These habits of keeping animals have resulted in plant material faster than it naturally grows. This had lead permanent loss of plant cover. Poaching has been practiced a long time back during the times of my grandparents and still this modern day such act lives alive. It is a fast way to earn lump sum amount and since most of people in rural areas are uneducated, they do not know the consequences of such practices. So many wild animals have been killed mainly to export their skin and bones which fetch high prize in the market. Stories of killing endangered species such as tigers, leopards had been recorded. Example: people in my village have killed two bears, a tiger and a wild boar for the reason associated with destruction of their crops and domestic animals. SOLUTIONS TO COMBAT THOSE ISSUES The mother earth is so kind. We are gifted with every necessity. For economic growth, different countries set up factories and technology which caused great deal of pollution. The rapidly changing world has many environmental issues to be combated. To do so, some solutions are laid below. People should be showed with the knowledge of converting a bare agricultural space by planting trees for their own good. For every one tree they cut, two trees should be planted. Farmers should be taught the right ways to plant trees. Planting trees around homes will be good for self. Planting trees are healthy activities as it will conserve soil, water and air pollution. It will create conditions more conducive to flora and fauna. Then our country look so beautiful and peaceful with all different kinds of trees ,flowers, wild animals,etc.and it will lead to increase in income or revenue for the economy for the economy as many tourists will visit our country. So it should be encouraged in the urban as well as in rural. Control of water pollution is mainly by sewage treatment, effluent treatment and public awareness by not letting them to dump sewage or garbage into the river and air pollution can be controlled by reducing number of factories, industries and vechiles.Air pollution can be controlled by methods depending on the source and the pollutant. Some of the methods used are good quality fuel, vehicles running on alternate sources of energy and using solar cookers or bio gas, planting of trees that remove the pollutinggases and clean the atmosphere and creating public awareness about the effects of air pollution. Soil or land conservation is of the important environmental problems in Bhutan that should be looked upon. People should be discouraged from using chemical fertilizers. Instead they can be inspired to use natural fertilizers. Use of heavy equipments can be also discouraged, so that soil retains its fertility as shown in figure 1.3and 1.4 Fig.1.3Fig.1.4 Left: Soil conservation.Right:Soil erosion. Poaching can be stopped by not demanding poached goods. Local leaders can be involved with programs that support and conserve animals. Boundaries should be identified to build parks for those animals so, that species are free from man. Local leaders take the initiatives or measures to protect animals that fall under endangered species. Migration from rural to urban areas can be controlled and solved by developing and bringing changes in rural areas. Government should provide better facilities such as health, education, safe drinking water and on top of that by providing job opportunities thus removing poverty, inequality and unemployment. Then people in rural areas will not migrate to urban areas. Waste management can be controlled by disposing in right disposal areas and places. It can be controlled by collecting or storing waste and transporting them for recycle. It can be controlled by showing different programs like malaria, skin diseases, water borne diseases etc.So that people will aware of those diseases and they will not throw their wastes where ever they like. The main strategy of Nature Conservation Division is to conserve ecosystem but the people and its socio economic development is equally important. People of Bhutan have been interacting with nature for many years and is viewed important to respect their right and aspirations. However for any major development interventation, the effect on biodiversity and protected areas should be carefully assessed. Therefore all development projects within the protected areas buffers on and biological corridor should be given higher priority for environment impact assessment, as is introduced by National Environmental Conservation. Adaption management is more focus on flexibility of plans to adjust to changing circumstances and insights. It is usually based on circular management process and allows the information about the past and to improve the management in the future .This kind of approach is favorable due to complex ecosystem and their interaction with the people for its uncertainty .The strategic plans of Nature Conservation Division is not fixed rather dynamic to meet the new opportunities and immediate needs, for flexible budgeting and rapid disburse not procedure. Almost all the protected areas in Bhutan are inhibited by people. The NCDs (Nature Conservation Divisions) strategy to pressure the environment is through involvement of different sectors of government and particularly the local people .Local knowledge and tradition is very important tool to tackle the forces that destroy the environment. Since the beginning of development planning in the 1960s, Bhutan has placed environmental conservation as the main concern while developing policies for socio-economic development (RGoB, 2002; Wangchuk, 2006). The Forest and Nature Conservation Act of Bhutan 1995 has given more importance in the active involvement of rural communities in forestry activities. It brought about major changes in forest management by paving the way for community and private forestry (CF, PF) for the benefit of rural communities. The community forest was established in Bhutan initially to conserve the environment as government realized the importance of local participation in the conservation. (Chhetri, Schmidt Gilmour, 2009). Before the introduction of community forest in Bhutan, people were not concerned and responsible about the forest and the natural resources it provided. As the development taking place rapidly in the country, there was growing pressure on the natural environment because of increase in demand of raw materials for construction especially wood beside stone, sand and other natural resources. There was support and cooperation from local people and became latter as effective poverty reduction methods. The people at the local level benefited from the ecosystem goods as they could not only consume for themselves but also could sell and earn income as a result they realize the importance of preservation of it. Therefore, community forest became popular and spread to all parts of the country. When the forest was a national property, people were not concerned and everybody wanted to extract as much benefit as they could without eco-friendly methods but when the forest was converted into community forest thereby entrusting responsibility and authority to people themselves, people began to know its benefits and started conserving it and now its successfully working in Bhutan. Example: Tshaphel community forest in Haa had ever harvested even a single timber from their community forest, in October 2011, they sold 3068.86cft of timber to the sawmill owners in Haa and earned a total sum of Nu.361, 731.43. The 33 households of the village earned a net profit of Nu.116, 796.92(Namgyal, Jan 11 2012). National Environmental Protection of Bhutan was launched in 2007 as environment has always been at the center of development concept in Bhutan. As we all know that environmental protection is one of the key pillars of Gross National Happiness. Poaching and hunting was prohibited and now people have minimized poaching and hunting. The forest official should submit their annual report to the department of forest. Illegal cutting of trees is prohibited and therefore charged higher than government penalties. Comparison of environment between India and Bhutan. The total population of Bhutan was 725940.00 in 2010 and 2011(The world bank) where as in India it was estimated 1.21 billion in April 1st, 2011.Due to more population in India the number of vehicles are increasing which lead to more pollution such as air, noise and water pollution and there are more waste compared to Bhutan. In India people are cutting down too many trees in order to establish an industries and factories which lead to deforestation and pollution. As a result they have no fresh water to drink and fresh air to breath. In Bhutan people are more into conservation and protection of the forest. Almost 69.1% of Bhutan is covered with forest (U.N.FAO) where as in India forest coverage is very less. CONCLUSION Today, with increased in modern facilities has highly degraded the pristine environment. Sea levels have risen, temperature is increasing and we do not get fresh water to drink. Air around are not safe to breath and there are so many issues that has made our mother earth irresistible. Global warming is the biggest concern. We are destroying homes for the animals. It is seen and heard that our mother is very dirty. We cannot be so harsh on our mother earth. We are being so unkind and doing nothing for our future generation. Nothing is impossible Yes we can do it. We can protect and preserve our environment. It is time that we join our hands and combats all the environmental issues such as deforestation, forest fire, global warming, waste management, pollution, over grazing, poaching, etc.

Investigation in to the factors that affects the rate of fermentation o

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. 1) Specific actions-Zyamse in yeast works on glucose. 2) A small amount is required as the enzyme is used again and again as it is uncharged at the end therefore one of my variables could be varying the quantity of yeast. 3) Each enzyme has its own specific temperature at which it works best. This is the factor at which I am going to investigate zymase in yeast. There are some enzymes which work best in cold eg. Fridge. And others that can stand considerably high temperatures. All enzymes are proteins as they are made by living cells. Therefore high temperatures cause protein to become DENATURED, destroyed, exaclty the same way as the cooked white of an egg cannot be changed back to its runny state. When proetin of an ezyme is denatured it no longer functions as a catalyst. COLLISION THEORY 'Rate of reaction simply depends on how hard and often the reacting particles collide with each other.' The basic idea is that particles have to collide with each other in order to react. MORE COLLISIONS INCREASE THE RATE OF REACTION. 1) Temperature increases the number of collisions. 2) Concentration (or pressure) in creases the number of collisions. 3) Sizes of solid particles (or surface area) incr... ...ature of 40-50Â °, therefore the molecules reacted faster and harder, collision theory, which starts to give off a gas, CO2. The glucose changes into a gas, Kinetic theory. My graph of my results shows that the Carbon Dioxide produced did not react as fast as the enzyme which is working as a catalyst has either stopped or died. My prediction has been a success. GLUCOSE CARBON DIOXIDE + ETHANOL(+ENERGY) C6 H12 O6 6CO2 + C2H5OH (210KJ) Evaluation: I really enjoyed doing this experiment, which is unusual! I did my research well. Using different types of materials, Internet, Library, Revision books. I think it would have been better if I had of done each temperature three times so that I could have found an average. It would have been abit more fairer and bit more accurate. I also missed the first week so it was a little bit confusing at first but it turned out okay.