have been working on an essay for a sociology class in which we were assigned to write about a “social problem.” Naturally‚ I had to write about marijuana! It’s written in a variation of APA format and I thought I might as well submit it so some of our readers could read it…maybe steal it for an assignment you’re putting off…feel free to critique as much as you want; after all‚ I am a student and that is how I learn. And I know I could have expanded a LOT more but it was just a simple school essay
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Water is the most important substance in our evolution and our daily lives. Without water‚ life as we know it would not have been possible. This essay will examine the water molecule in order to ascertain how it brought about Earth’s successful ecosystem and how important it is to us today. Each water molecule consists of one oxygen atom and two hydrogen atoms. The oxygen atom bears a slight electronegative charge while hydrogen possesses a more positive one. Because opposite charges attract‚ the
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Treating starch How is starch and cellulose treated to allow them to be used by the yeast? (1)Starch is a complex carbohydrate that is insoluble in water. It is supplied by traditional staple foods such as cereals‚ roots and tubers. Starch is used in cooking for thickening foods such as sauce. In industry‚ it is used in the manufacturing of paper‚ textiles and as a mould in the manufacture of sweets such as wine gums and jelly beans. Fermentation (2)As with any food preparation‚ there are
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UMUC Biology 102/103 Lab 3: Cell Structure and Function INSTRUCTIONS: On your own and without assistance‚ complete this Lab 3 Answer Form electronically and submit it via the Assignments Folder by the date listed on your Course Schedule (under Syllabus). To conduct your laboratory exercises‚ use the Laboratory Manual that is available in the WebTycho classroom (Reserved Reading or provided by your instructor) or at the eScience Labs Student Portal. Laboratory exercises on your CD may not be
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such as patient with abnormal haemoglobin. Apart from that‚ electrophoresis can also be used as a method to separate and purify proteins. MATERIALS AND REAGENTS: 1. Electrophoresis tank with voltage power supply. 2. 2.5 x 12 cm sized cellulose acetate paper. 3. Paper to line the table. 4. Tray for the dye and acetic acid. 5. Tray for the buffer. 6. Forceps. 7. Capillary tubes. 8. Clock. 9. Filter paper. 10. Scissors. 11. Spectrophotometer (570 nm wavelength) 12. 5% (v/v) of acetic
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Indicate whether each of the following statements about triglycerides is true or false. Indicate whether each of the following statements about triglycerides is true or false. 1. A triacylglycerol is composed of 3 glycerol molecules joined to a fatty acid. 2. The hydrocarbon chains of fatty acids vary in length as well as in the number and location of double bonds between the carbon atoms. 3. Fatty acids with one double bond in their hydrocarbon chain are called monounsaturated‚ while those with
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Basic chemistry of a cell Properties of water – – – Life on Earth began in water and evolved there for 3 billion years before spreading onto land. Modern life‚ even terrestrial life‚ remains tied to water. All living organisms require water more than any other substance. Human beings for example‚ can survive for quite for a few weeks without food‚ but only a week or so without water. – – – Water is deceptively simple. It is shaped something like a wide V‚ with its two hydrogen atoms joined
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properties of cohesion and adhesion – leaves pull water upwards from the roots through the xylem. Hydrogen bond Hydrogen Bonding In Cellulose: Cellulose is a polysaccharide and consists of linear chains of beta-glucose residues with the OH (hydroxyl) group pointing upwards and some pointing downwards. Individual cellulose chains are bound to each other by hydrogen bonds in order to form microfibrils which associate further more to form macrofibrils. These have high tensile
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Properties and applications of Materials Assignment 2 Task 1 (P1) I. Describe the structure including the atomic structure of the element copper. Copper has a symbol Cu. It is a metal with a very high thermal and electrical conductivity. Pure copper is soft and malleable when it is freshly exposed the surface has a reddish-orange colour. It has an atomic mass of 63.546 g.mol -1 and an atomic number of 29. The electrons per energy level for copper go 2‚8‚18‚1. Copper has an atomic number of 29‚ thus
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Luminol is a chemical that exhibits chemiluminescence‚ with a blue glow‚ when mixed with an appropriate oxidizing agent. Luminol is a white-to-pale-yellow crystalline solid that is soluble in most polar organic solvents‚ but insoluble in water (Bortoluzzi‚ Cadore‚ Gallon‚ & Imanishi‚ 2014). Method for the detection of traces of blood in the environment and‚ for this reason‚ can also be used to monitor cleaning and disinfection procedures in units at risk for contamination with blood. Microcrystalline
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