Nitrogen cycle Nitrogen gas is a colourless‚ odourless and non-toxic gas which makes up about 78 percent of the atmosphere. Nitrogen is extremely important to living material; in fact plants‚ animals and humans could not live without it. Sprent (1987) argued that nitrogen cycle is the most important process to living organisms after the carbon cycle. But nitrogen exists as dinitrogen (N2) in the atmosphere‚ which living things‚ particularly plants‚ cannot synthesize (citation) The process of nitrogen
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What is huffing? The intentional breathing of gas or vapors with the purpose of reaching a high. What does huffing do to the brain? Changes the electrical activity of the brain. On a elecroencephalograpghy‚ (or EEG) the brain will show up as sharp impulses. What toxic effects and the "risks" that occur with this practice on the body. The brain: changes the electrical activity within the brain‚ possibly resulting in hallucinations and convulsions. Also the center of emotional behavior
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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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N10/4/CHEMI/SP2/ENG/TZ0/XX 88106105 CHEMISTRY STANDARD LEVEL PAPER 2 Thursday 11 November 2010 (afternoon) Candidate session number 0 1 hour 15 minutes 0 INSTRUCTIONS TO CANDIDATES • • • • Write your session number in the boxes above. Do not open this examination paper until instructed to do so. Section A: answer all of Section A in the spaces provided. Section B: answer one question from Section B. Write your answers on answer sheets. Write your session number
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Maggie Chaplin Mikal Kinley‚ Sarah Jefferson Ms. Schwab Advanced Biology 9/26/13 Urinalysis Lab I. Purpose; the purpose is to analyze and interpret data on the body’s utilization of carbohydrates‚ lipids and proteins. II. Introduction A urinalysis is the analysis of a urine sample. This test is common; it can be evaluated in a variety of ways. By; physical appearance‚ and chemical/ molecular properties. Your body’s urine is the excess of what the body doesn’t use. Things like carbohydrates
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with oxygen (in the air) to form aluminum oxide. b. Sodium oxide reacts with carbon dioxide to form sodium carbonate. c. Calcium metal reacts with water to form calcium hydroxide and hydrogen gas. d. Potassium nitrate decomposes to form potassium nitrite and oxygen. e. Barium metal reacts with Iron (III) sulfate to produce barium sulfate and iron metal. f. Barium chloride reacts with sodium sulfate to produce barium sulfate and sodium chloride. g. Bismuth (III) oxide and zinc metal react to produce
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Substance related disorders Definitions and terms Use This is when a person drinks alcohol or swallows smoke‚ sniffs or injects a mind altering substance. Abuse This is when a person is using alcohol or drugs for the purpose of intoxication or in the case of prescription for purpose beyond their intended use. Dependence It is the continuing use of alcohol or drugs despite adverse consequences to ones physical‚ social and psychological wellbeing Addiction
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As Bishop (2008) states routine urinalysis is relatively fast‚ simple and accurate test that detects abnormalities in composition of urine like protein‚ glucose‚ ketones‚ bilirubin‚ leucocytes‚ nitrite and blood. The findings may determine further specific investigations and tests i.e. leucocytes and nitrites in urine may suggest presence of bacteria in urine causing urinary tract infection (Midthun‚ S.J. 2004). The urine specimen should be sent to laboratory for culture where the organism is specified
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Nitrogen Cycle Questions 1. Nitrogen is both the __most abundant element__ and in organisms it is the raw material of two main macromolecules __ammonia and nitrite which build proteins and _nitrates which build your genetic material‚ DNA. 2. In the atmosphere it is found in the form of N2 which is __nitrogen gas____. 3. These Nitrogen molecules then need to go through a process called __nitrogen fixation__ in order to be converted into molecules that living organisms can use readily. 4. Two forms
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Urinary Analysis Bio 224L Wed. 9:30-10:50 Amie Gohn 11-30-11 Mr. Brown Introduction There are many different factors that can affect urine including volume‚ urine concentration‚ and pH levels. Factors that affect urine volume are fluid intake and reabsorption‚ which affects the amount of urine released. Urine concentration is measured by the concentration of dissolved solids present in a person’s urine‚ which is affected by water intake levels as
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