Explain the role of the kidney in the homeostatic control of water balance P5: Explain dysfunction in relation to water balance and possible treatments M3: Discuss dysfunction in relation to water balance and possible treatments D2: Analyse the impact on the human body of dysfunctions in relation to water balance For P4‚ I’m going to outline the physiological overview of the kidneys and then I am going to explain the renal system. Also I am going to explain the kidneys in more detail. The physiological
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The fluid mosaic model of the cell membrane. What is the fluid mosaic model? The fluid mosaic model is a model conceived by S.J. Singer and Garth Nicolson in 1972 to describe the structural features of biological membranes. The membrane is described to be fluid because of its hydrophobic integral components such as lipids and membrane proteins that move laterally or sideways throughout the membrane. That means the membrane is not solid‚ but more like a ’fluid’. The membrane is depicted as mosaic
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the solution that contained AgNO3 in the sucrose concentration of 0.4M (Figure 2). In addition‚ the Elodea cells seemed to shrink as the sucrose concentrations’ increased without AgNO3. Therefore the results were that with the addition of AgNO3‚ osmosis was not inhibited. The internal osmotic pressure at different sucrose concentrations was 0 for 0.0M‚ 2.43 for 0.1M‚ 4.85 for 0.2M‚ 7.28 for 0.3M‚ 9.71 for 0.4M‚ 12.14 for 0.5M‚ 14.56 for 0.6M‚ and 24.27 for 1.0M (Table
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Title: Homeostasis Date: 19th January 2010 Aim: To observe‚ draw and label the parts of a nephron. Apparatus: Slide of the transverse section of a kidney Pencil Paper Microscope Method: The slide of the transverse section of a kidney was mounted on the microscope and observed under high power. Drawings of the parts of the nephron were made. Calculations of Magnification: Loop of Henle One Ocular Division = 0.22 µm Size of Specimen = 2 ocular divisions Conversion of Ocular
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solution from another by osmosis. The higher the osmotic pressure of a solution‚ the more water tends to move into it. Pressure must be exerted on the hypertonic side of a selectively permeable membrane to prevent diffusion of water by osmosis from the side containing pure water. Osmotic concentration refers to the measure of solute concentration‚ defined as the number of osmoles of solute per litre of solution. These particles must be osmotically active for the process of osmosis to take place. Keeping
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Earth‚ plants ... www.scienceclarified.com › Oi-Ph Osmosis in living organisms. Living cells may be thought of as very small bags of solutions contained within semipermeable membranes. For example‚ Figure 1 ... osmosis Facts‚ information‚ pictures | Encyclopedia.com ... www.encyclopedia.com › ... › Chemistry › Chemistry: General Water is the best example of a polar molecule‚ sometimes called a dipole. .... Crucial to the operation of osmosis in plants are "guard cells‚" specialized cells ....
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hemolysis to occur fastest‚ and the solution with the lowest temperature‚ 8 C‚ caused hemolysis to occur the slowest. The higher temperature a solution is the faster hemolysis will occur due to molecules moving faster‚ causing the rate of diffusion and osmosis to increase. Thus‚ the regulation of temperature and tonicity is essential to the survival of living cells. Introduction
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CORE ONE: MAINTAINING A BALANCE • IDENTIFY THE ROLE OF ENZYMES IN METABOLISM‚ DESCRIBE THEIR CHEMICAL COMPOSITION AND USE A SIMPLE MODEL TO DEMOSTRATE THEIR SPECIFITY ON SUBSTRATES. Enzymes are biological catalysts this means that they lower the energy required to start a chemical reaction within a cell but don’t get used up by that reaction. Every reaction and process in the metabolism of the cell is controlled by a specific enzyme. Enzymes are globular proteins whose shapes are specialised
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the process by which organisms balance water‚ or solvent‚ concentrations with salt‚ or solute‚ concentrations in tissues and cells (Campbell). Organisms must perform this process of regulation because of the “Fick’s Law of Diffusion”‚ also called osmosis‚ which states that‚ “The flow of solvent from a solution of lower solute concentration to one of higher solute concentration” will occur. This means that in an organism water will cross a semi-permeable layer‚ tissues in cell walls in this case‚ from
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& exocytosisDiffusion‚ facilitated diffusion‚ and osmosis. Types of Particles Transported proteins‚ ions‚ large cells‚ complex sugars. Anything soluble (meaning able to dissolve) in lipids‚ small monosaccharides‚ water‚ oxygen‚ carbon dioxide‚ sex hormones‚ etc. Examples phagocytosis‚ pinocytosis‚ sodium/potassium pump‚ secretion of a substance into the bloodstream (process is opposite of phagocytosis & pinocytosis) diffusion‚ osmosis‚ and facilitated diffusion. Importance In eukaryotic
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