Experiment #7 Fall 2014 Dehydration of an alcohol NAME Nick Weinberger POSTLAB 1. Show the mechanism for the dehydration of -tetralol under conditions employed in the lab. Show all intermediates‚ and show electron flow with arrows. 2. What general mechanism most likely applies to this reaction (SN2‚ E2 etc)? E1 3. Why was acid employed in this reaction? The acid was used to protonate the leaving group (OH) to form water which is a much better leaving
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Good morning Mr. X‚ my name is Melissa and I am here to better explain your condition to you in more lemans terms to aid you to a healthier style of living. Hypertension is a blood pressure that is above the recommended 120/80 (systolic/diastolic) range. The systolic pressure is the pressure of the blood as it flows out during contraction while the diastolic pressure is the pressure of the blood within the artery as it flows into the heart during the rest period. Blood volume‚ the amount of blood
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Hyperthermia and Homeostasis Definition of homeostasis is the attempt to keep equilibrium of the internal organisms despite the external environment. Homeostasis is everywhere in your body‚ think of the heart for a second. If you have a high blood pressure your cells send signals to your brain to slow the heart rate down to keep equilibrium‚ or if you have low blood pressure your heart will beat faster. Hyperthermia relates to homeostasis through numerous different systems in the body. In
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Homeostasis‚ in general‚ the sleep-wake cycle is regulated by two separate biological mechanisms in the body which interact together and balance each other. Studies say that high levels of adenosine leads to sleepiness. According to the two process model of sleep regulation the timing and structure of sleep are determined by the interaction of a homeostatic and a circadian process. The original qualitative model was elaborated to quantitative versions that included the ultradian dynamics of sleep
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vaporisation and secondly mass transfer is taken place as the water goes away from the food stuff (Earle‚ 1983). The Rate of drying depends on the type of food‚ the processing conditions and the design of the drier (Fellows‚ 2000). The practical of dehydration of tomatoes was carried out in a cabinet dryer that was operated at the temperature of 80°C. In the cabinet dryer the food material was spread out on the trays and heating was facilitated by an air current sweeping across the trays (Earle‚ 1983)
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Homeostasis A state of balance in the body Whoa Homeostasis “the tendency of a system‚ esp. the physiological system of higher animals‚ to maintain internal stability‚ owing to the coordinated response of its parts to any situation or stimulus tending to disturb its normal condition or function” - Dictionary.com Unabridged (v 1.1) “The ability or tendency of an organism or a cell to maintain internal equilibrium by adjusting its physiological processes.” - American Heritage Stedman’s Medical
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Biology Topic 1 MAINTAINING A BALANCE What is this topic about? To keep it as simple as possible‚ (K.I.S.S.) this topic involves the study of: 1. ENZYMES & HOMEOSTASIS 2. TEMPERATURE REGULATION 3. INTERNAL TRANSPORT SYSTEMS 4. EXCRETION & WATER BALANCE but first‚ an introduction... Living Things are Made of Cells Homeostasis All living things are composed of microscopic units called cells. You learned in a previous topic about the structure of a cell and the functions of the
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RESPIRATION * The release of energy from food * All living cells need energy to carry out M R S G R E N‚ contraction of muscles‚ build up of larger molecules (e.g. proteins)‚ maintains steady body temperature (homeostasis) * Aerobic: * needs oxygen * only occurs when a certain amount of oxygen is available * C6H12O6 + 6O2 6CO2 + 6H2O + Energy * releases large amount of energy (2900 KJ) * Anaerobic: * without oxygen * [glucose lactic acid]
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wonder why the body shivers when it gets cold? Homeostasis keeps body conditions steady and constant. So‚ this means that when the body shivers‚ that is homeostasis taking place trying to keep your body temperature at a constant degree. Homeostasis maintains normality in the body in many different ways. Some examples include osmoregulation‚ thermoregulation‚ chemical regulation‚ and behavioral homeostasis. While homeostasis controls these processes‚ homeostasis must also go through a separate process of
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Homeostasis is an organism’s process of maintaining a stable internal environment to a set point for sustaining life (Editors 2017). Homeostasis keep the internal conditions different from those outside. Homeostasis is important because it maintains a steady body temperature; a steady blood level; hormones; blood pressure. Our blood and body temperature would have dramatic swings without homeostasis. For example‚ Diabetes and its symptoms are examples of when blood sugar levels are out of homeostasis
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