Biology laboratory work: Osmosis observation Measuring the dependence of net mass gain in potato pieces on concentration of sugar solution By Jonas Kulikauskas Siauliai Didzdvaris Gymnasium Hypothesis: The more sugar in solution‚ the more potato mass will decrease. Aim: To see how potato mass will change at different concentration solution. Research question: How the mass of potato will change at different concentration solutions? Variables: Dependent: solution concentration. Independent:
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Identifying and comparing the main components of blood. By Jason T Morrison. Blood‚ what an amazing substance. It has only been since being set this task by one of my tutors‚ Dr C Dublon that I have truly realised how amazing blood really is. Blood is not as some people may think just made up of one component‚ but many different components working together in an almost symbiotic relationship. The average human being carries approximately five litres of blood‚ which is equivalent to about 8% of their
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Osmosis is the selective diffusion of water and other molecules across membranes‚ which in the case of living organisms‚ the solvent (water) would have net movement across a selective permeable membrane. Osmosis only occurs when a membrane such as that of a cell is permeable to water molecules but not to specific solutes (Tortora & Derrickson 2014). Certain simple molecules such as oxygen‚ water and carbon dioxide can travel across the cell membrane by osmosis‚ a passive process similar to other
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process of osmosis and its importance to living organisms Osmosis is the process by which there is a net movement of water through a semi permeable membrane from an area of high water potential to an area of low water potential. Within a cell‚ osmosis has the following effect. If the water potential of the cell is lower than that around the cell water will move across a concentration gradient into the cell. If this is the case‚ the increase in water in the cell‚ may cause the cell to swell‚ which
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correct. High Power should show only a couple of cells that take up most of the viewing field. The micoscope is designed to view the slide at different spots‚ so not all drawings will look like this one. Images were snipped from the virtual microscope’s flash animation. Scanning (4) | Low (10) | High (40) | 3. Go to google and type "cheek cells" into the search box. Click on "images" to see all the images google has found on the web showing cheek cells (there should be hundreds). What do all of
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Osmosis Osmosis is just a special case of diffusion - where water diffuses through a membrane which has different concentrations on either side. Permeable means "allows anything to pass through". Membranes in cells allow small molecules (water) to pass through‚ but prevent bigger ones from passing. This is called "selectively permeable". Take a look at the following animation; If a selectively permeable membrane separates the two solutions‚ water moves through it in both directions at
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minute of every day‚ someone needs blood. That blood can only come from a volunteer donor‚ a person like oneself who makes the choice to donate. When one makes a blood donation‚ they are joining a very select group. Currently only three out of every one hundred people in America donate blood. From its beginning‚ the American Red Cross has formed a community of service‚ of generous‚ strong‚ and decent people bound by beliefs beyond themselves. The American Red Cross blood donor embodies this principle
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Gladys Martin July 2005 Indications for Blood Transfusions Goal of transfusing: Preserve oxygen delivery to tissues and avoid myocardial ischemia. One can do this by increasing the oxygen-carrying capacity of blood by raising the Hgb concentration of patients with acute/chronic anemia. Each unit will raise the Hct by 3 to 4 percent unless there is continued bleeding. Background: Transfusion trigger based on the 10/30 rule‚ give 2 units. However‚ with the discovery of transfusion-related HIV and
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The film “There will be Blood‚” was directed and screen written by Paul Thomas Anderson and was released in 2007. The main character was an unexpected and mysterious man named Daniel Plainview‚ who surprised everyone at least one time during the whole film. It is a good movie because you have to really look deep and tie everything together and figure it out‚ showing that there is a deeper meaning then its made out to be. The film is in the perfect genre category‚ which is drama. The conflicts in
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BLOOD DISORDERS Pamela Butler Axia University of Phoenix Health & Diseases Blood disorders can affect one ’s life and health in many ways. Blood disorders come in many types and have many symptoms and treatments. However‚ with proper knowledge of symptoms‚ lifestyle factors‚ and family history one can prevent and treat these disorders before becoming life threatening. After reviewing each scenario provided it is established that each individual is suffering from a different
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