stable as possible. Homeostasis is necessary because human cells are efficient but very demanding. The phrase homeostasis is a bit confusing; conditions inside our bodies are not constant but are kept within a narrow range. Some factors such as temperature and blood PH change slightly while others such as blood glucose very considerably throughout a normal day without producing any harmful effects. A brief description of homeostasis is that it is maintenance of a constant internal environment in response
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hiker’s heat gains and losses‚ and what mechanisms would come into effect to keep his temperature at the desired 37ºC. Humans are subject to vast changes in environmental temperatures‚ but our complex biochemical systems have a major limitation in that enzymes only operate within a relatively narrow temperature range. Accordingly the human body have anatomical and physiological mechanisms that keep body temperatures within acceptable limits‚ regardless of environmental conditions. This homeostatic
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Experiment: At this experiment we are investigating does the temperature affect how quickly the particles diffuse to an even concentration throughout the water‚ we are going to do this experiment by using food coloring to see how quick the food coloring diffuse in hot water and cold water. Materials: • • • • • • • • One beaker Hot plate Ice Water Food coloring Thermometer Timer Eye dropper Hypothesis:I think the food coloring will spread faster‚ because the particle in the hot water have more
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By analyzing the data collected in the experiment and subsequently constructing graphs as shown above in figure 5 that plot the change of temperature against time with the inclusion of the different quantities of the isomer of pentane used. There are many kinds of trends which can be speculated about through analyzing the result graphs. Some of the different ways to identify trends within a graph‚ the main one being trend lines‚ the r2 value of the graph. A r2 value is a statistical measure of how
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50cm3 water with a temperature above 50? b. Prediction and Hypothesis. Make a prediction about what you expect to be the outcome. Explain your prediction using scientific ideas. I predict that the bigger the surface area to volume ratio‚ the lesser the heat will be lost. And the smaller the surface area to volume ratio the more heat will be lost. Variables Independent Variable. The surface area‚ volume ratio of the beaker Dependent Variable. The temperature of the water/The
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Paragraph 1: Crystal chemical relationship between quartz (SiO2) and FePO4 The following describes the crystal chemical relationship between quartz (SiO2) and FePO4. At temperatures below 980 K‚ FePO4 exists as alpha- FePO4. Beyond the temperature mark of 980 K (at 980 K or higher)‚ FePO4 exists as beta- FePO4. The geometrical symmetry of single cell of α- FePO4 is trigonal while the geometrical symmetry of β- FePO4 is octahedral structure. At the alpha phase‚ the cell parameters shoots up by a
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must use the latent heat of fusion‚ and when the phase change is from liquid to a gas‚ we must use the latent heat of vaporization. Theory When a solid has reached its melting point‚ additional heating melts the solid without a temperature change. The temperature will remain constant at the melting point until the entire solid has melted. The amount of heat needed to melt the solid depends only on the mass of the solid. We have: Q = MLf EQ. 1 Where Q is the amount of heat absorbed
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occurs when the body is unable to control its own temperature: “the body’s temperature rises rapidly‚ the sweating mechanism fails‚ and the body is unable to cool down. When heat stroke occurs‚ the body temperature can rise to 106 degrees Fahrenheit or higher within 10 to 15 minutes. Heat stroke can cause death or permanent disability if emergency treatment is not given.” (Prevention‚ 2014) Heat Stroke symptoms: High body temperature. A body temperature of 104 F (40 C) or higher is the main sign of
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which will keep the highest temperature for the longest amount of time? Hypothesis: My hypothesis is that the metal insulated mug with the lid will retain the highest temperature for the longest amount of time. Likewise‚ the mug that will lose heat the fastest will be the plastic mug with no lid. Independent Variable: The variable that was purposely changed was the amount of time the mugs sat on the counter each trial. Dependent Variable: I hypothesize that the temperature of the liquids will change
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Research Question Investigate the effect of temperature on the rate of respiration of various parts of plants (germinating seeds and dormant (non-germinating) seeds)‚ by measuring the oxygen consumption and change in gas volume of respirometers containing either germinating or non-germinating seeds at different temperatures to measure the rate of respiration of these beans at different temperatures. Hypothesis 1.Germinating seeds have a higher rate of respiration as compared to non-germinating
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