Study and revision skills INFO This section covers the following ideas and material: An introduction to revision methods‚ including • concept mapping‚ flow charts and mind maps • planned revision timing • practising examination technique. General study methods Organisation of study time The examinations are looming large. Suddenly you realise that you do need your notes and experimental work from the last year or two. Are they in good shape? Well...! It is worth remembering that revision
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BIOENERGETICS ENERGY FLOW AND NUTRIENT CYCLING Ecosystem • It is an area which is self contained and life supporting. • It contains biotic (including plant‚ animal and microorganisms) and abiotic or physical factors (including nutrient cycling). • Examples include: coral reefs‚ deserts‚ savannahs and rain forests. • Several habitats and the communities associated with them make up an ecosystem. http://www.bloggersbase.com/images/uplo aded/original/c622477c9e5a5d2040c71563 31f799b10498611d.jpeg
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Effects of soil ph variation on radish plants growth Background information: the soil ph can have 2 different impacts on the growth of plant roots. First and most important is how it affects the concentration of nutrients present in the soil itself. This variable varies depending on the ph tendency‚ in particular‚ nutrients like phosphorous‚ potassium ‚sulphur‚ calcium and magnesium tend to drastically decrease in more acidic ph conditions (<6.0)‚ on the other hand iron‚ manganese‚ boron
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Identification of Bacterial Pathogens basic skills in diagnostic bacteriology Dr.T.V.Rao MD Dr.T.V.Rao MD 1 Identification of Microorganisms • For many students and professionals the most pressing topic in microbiology is how to identify unknown specimens. • Why is this important? • Labs can grow‚ isolate and identify most routinely encountered bacteria within 48 hrs of sampling. • The methods microbiologist use fall into three categories: ♣Phenotypic- morphology (micro and
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The natural gas industry in Trinidad and Tobago began with the discovery of gas on land at Mahaica in 1955 by Dominion Oil‚ however the first major natural gas discovery (One Trillion Cubic Feet (Tcf)) was off the East coast of Trinidad by Amoco in 1968 in the Teak offshore field. This was followed up in 1973 by a 2 Tcf find in the South East Galeota acreage. There was however production and utilization of gas before this date. Although the dates referred to mark the first large finds of natural
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with the fall of temperature but it is not necessary in all cases. However we must follow two behaviours: In endothermic process‚ solubility increases with the increase in temperature and vice versa. For example: solubility of potassium nitrate increases with the increase in temperature. In exothermic process‚ solubility decrease with the increase in temperature. For example: solubility of calcium oxide decreases with the increase in temperature. Gases are more soluble in cold
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C2.1.1 Structure and bonding a) Compounds are substances in which atoms of two or more elements are chemically combined. b) Chemical bonding involves either transferring or sharing electrons in the highest occupied energy levels (shells) of atoms in order to achieve the electronic structure of a noble gas. c) When atoms form chemical bonds by transferring electrons‚ they form ions. Atoms that lose electrons become positively charged ions. Atoms that gain electrons become negatively charged
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Life cannot exist without energy Energy flows in one direction thru the ecosystem eg. Green plants (autotrophs) harness light energy from the sun. An another consumers eat the autotrophs and other consumers. This flow of energy is a consequence on the laws of thermodynamics‚ were in sense that energy can neither be stored or created‚ but is transferred from one type to another. At which sun is converted to heat. The transfer of energy in an ecosystem‚ can be showed in a number of ways eg as a
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humans with likely tragic effects. In Caspian Sea‚ about 60% of untreated wastewater is released into it‚ also in Africa and Indo-Pacific‚ the volume is around 80 – 90%. From analysis‚ it has been estimated that influx of Nitrogen in the form of Nitrate or Ammonium that will run off into the marine environs would experience an increase to 14%. It has also been emphasized that hazardous substances that are very toxic to humans and animals which are tenacious in the environment and also liable to bio-accumulate
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used. Silver nitrate is used to precipitate the chloride ions in the unknown‚ which can be measured to determine the percent composition of chloride in the unknown. The results from these three major analyses helped to draw the conclusion that the unknown is in fact [Co(NH3)6]Cl3. -2.0 Synthesis/Analysis of Cobalt-Amine-Halide Compund (Procedure 1‚ pgs 16-7)) A cobalt (III) amine halide compound was prepared by making a solution of cobalt (II) chloride hexahydrate and ammonium chloride (NH4Cl)
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