Enzymes and their importance in plants and animals (25 marks) Enzymes are biological catalysts‚ which accelerate the speed of chemical reactions in the body without being used up or changed in the process. Animals and plants contain enzymes which help break down fats‚ carbohydrates and proteins into smaller molecules the cells can use to get energy and carry out the processes that allow the plant or animal to survive. Without enzymes‚ most physiological processes would not take place. Hundreds of
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This paper is an analysis conducted on Nucleic Acids through a variety of tests specifically‚ Dische‚ Murexide‚ Wheeler-Johnson and Phosphate Tests in order to exemplify structural features of nucleic acids as well as identify the principle involved in each chemical test. Different procedures and different test compounds were applied‚ and results were noted as for changes in colors of precipitates or solutions. For Dische Test‚ light blue was obtained for RNA and dark violet for DNA. For Murexide
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Activity 4.1.3: Testing the Waters | Introduction Many chemicals dissolve in water because it is an excellent solvent. Once dissolved‚ these chemicals are not visible to the human eye. Therefore‚ many chemicals might be present in water without providing any visible evidence. Additionally‚ some substances can be present in very low concentrations and still cause health concerns. For these reasons‚ drinking water needs to be tested for contamination. A variety of chemical tests are used to detect
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MALACAÑANG Manila PRESIDENTIAL DECREE No. 1185 FIRE CODE OF THE PHILIPPINES WHEREAS‚ death and injury to persons and loss and damage to property by fire have reached alarming proportion that the economic and social gains of the society are being continually undermined; WHEREAS‚ in order to effect a meaningful reduction of the alarming fire losses‚ there is a need to develop national consciousness and involvement of all persons in the prevention and suppression of fires; WHEREAS‚ fire prevention
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1.0 General Description 1.1 General 1.1.1 Project Capacity This project is planning to install 2×300MW units‚ The configuration of unit is Pulverized coal fired boiler with condensing steam type turbine‚ and Limestone-gypsum wet Flue Gas Desulphurization system adopted. 1.1.2 Site Conditions(supposed for the technical proposal for the present.) 1. Location The power station is located at Boalkhali Chittagong Bangladesh 2. Fuel & Transportation The source of coal for the power station
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Chemistry SCH3U Unit 1 Lesson 1 Key Questions 1. List three physical properties and one chemical property of a) an iron nail * conducts heat and electricity well * solid at room temperature * ductile * rusts in water (chemical) b) gasoline * liquid at 20deg C * boils between 20 and 200 degrees Celsius * not soluble in water * flammable in the presence of oxygen (chemical) 2. People in a workplace should have access to MSDS sheets so that * chemicals
Free Atom Chemical bond Periodic table
SEWAGE TREATMENT Sewage is a mixture of domestic and industrial wastes. It is more than 99% water‚ but the remainder contains some ions‚ suspended solids and harmful bacteria that must be removed before the water is released into the sea. The treatment of wastewater is divided into three phases: pretreatment‚ primary treatment and secondary treatment. Pretreatment Large solids (i.e. those with a diameter of more than 2cm) and grit (heavy solids) are removed by screening. These are disposed of in
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dioxide from burning fossil fuels leading to acid rain‚ carbon dioxide from burning of fossil fuels and methane from cattle and rice fields leading to greenhouse effect and global warming. * LAND POLLUTION - pesticides‚ herbicides‚ and nitrates wash into rivers and lakes affecting food chains. Habitat reduction by Humans Human beings are dependent on the Earth’s diversity of species for our survival. Wild species play a vital role in the maintenance of the planets ecological
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the country to invest huge in the public‚ co-operative and in private sectors. At present‚ India has more than 63 large sized plants of fertilizers‚ manufacturing wide assortment of fertilizers including nitrogenous‚ phosphatic‚ Ammonium Sulphate (AS)‚ Calcium Ammonium Nitrate (CAN) urea‚ DAP and complex fertilizers. Apart from it‚ there are other 64 small and medium scale Indian manufacturers producing fertilizers. MICHAIL PORTES FIVE FORCES MODEL : Mchail
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of sediment being compacted over a long time - eroded more easily than other kinds of rock - can contain fossils but no crystals - eg chalk + limestone (from calcium carbonate) - metamorphic rock has crystals - formed by heat + pressure on sedimentary rock - contains interlocking crystals - eg marble (from limestone or chalk) quarrying limestone - produces local jobs in rural areas + improves economy - quarries can be landscaped after - used 4 making cement (heated w powdered clay)
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