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    that the molecules move across the cell membrane is that the carbon dioxide molecules spread out rapidly out your red blood cells down their concentration gradient to your lungs. When water molecules move freely through your cell membrane is called osmosis as we learned last unit. The reason why molecules move across the cell membrane is because they are small molecules that have no charge like oxygen which the cell membrane need to survive. So basically the molecules that move across the cell membrane

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    Osmolality Lab

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    this lab was to determine the concentration of NaCl or sodium chloride that is isotonic to elodea cells. First off‚ what is osmosis? Osmosis is this huge net of molecules moving through semi-permeable membrane to high concentration to direction where everything becomes balanced. This brings us to what osmolality is. Osmolality is related to osmosis and we know that osmosis has something to do with water so that being said‚ osmolality is number of osmoles of solute per liter in solution. So‚ what

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    Cell Membrane Permeability and Osmosis Experiment 3 Objectives: To demonstrate the mechanism involved in Osmosis; To demonstrate the tonicity of solutions by subjecting the cells to different concentration of solute. To view‚ under the microscope‚ any change in the shape and volume of the cells after subjecting them to different concentrations of solutes; To demonstrate the permeability of cell membrane by subjecting the cells to different solutes; To demonstrate the mechanism involved in

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    fluid balance

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    Ions‚ atoms and molecules are constantly in random motion; this is mainly marked in liquids and gases as they are further apart. When there is a small amount of molecules of a substance in an area and a large number is another area and they have no barrier between them the random motion causes numbers to even up; this is called diffusion. Diffusion is when molecules move from a high concentration to a low concentration. The concentration gradient is when the concentration is different for each

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    solutions that have the same concentration of solutes relative to one another ___B__ the movement of molecules across a selectively permeable membrane with the aid of specialized transport proteins a. diffusion b. facilitated diffusion c. osmosis d. active transport e. hypotonic f. isotonic g. hypertonic 2. What is the main difference between simple diffusion and facilitated diffusion? FACILITATED IS MOVEMENT WITH THE HELP OF CARRIER PROTEINS 3. What is the main difference between

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    There are different types of transport to suit the sizes of molecules as well. Passive transport includes diffusion‚ osmosis‚ and facilitated diffusion. Diffusion is a net of movement of molecules from an area of high concentration to an area of low concentration that doesn’t require energy. It moves molecules such as oxygen into the cells and carbon dioxide out of the cell. Osmosis is the diffusion of water across a semipermeable membrane. It occurs because of the concentration of a solute in a

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    PotatoLabReport

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    Potato Lab Report: Effects of Sucrose Solutions on Potato Cells and Water Potential Abstract: Osmosis is a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one‚ thus equalizing the concentrations on each side of the membrane. In this experiment‚ we learn about Osmosis and Diffusion through potato cores in different concentration of sucrose‚ (water‚ .2‚ .4‚ .6‚ .8‚ 1.0). We realized

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    Diffusion Lab Report

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    THE EFFECT OF THE WATER CONCENTRATION GRADIENT ON THE RATE OF OSMOSIS Investigation Folio: Summative Stage 1 Biology: SEMESTER 1 2014 MARCIA SHAW - 151003X INTRODUCTION Diffusion: is when something spreads more widely from a higher concentration gradient to a lower concentration gradient. Diffusion is the process from which molecules‚ atoms or ions mingle together and move from an area of high concentration to an area of low concentration as a result to their kinetic energy. for example

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    salt (Na)‚ 0.897% Na‚ 5.0% Na‚ and distilled water with a 0.0% Na solute concentration. My hypothesis is that cellular form and contents will either change or maintain form and consistency when introduced to these various different environments as osmosis occurs until a dynamic equilibrium has been reached between the membrane and its environment. It was found that when RBC’s are introduced to various solute concentrates their form and consistency did changed with highest amount of hemolysis evident

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    the beetroot cells. Osmosis‚ which is the net movement of water particles from a region of higher water potential to a region of lower water potential through a selectively-permeable membrane until equilibrium is reached‚ occurs the most for the beetroot cells which are submerged in the 4ml of 50% alcohol. This is because‚ the 4ml of 50% alcohol is the most concentrated solution among the 5 set-ups‚ hence would be the most hypertonic solution to the beetroot cells. Hence‚ osmosis would occur more rapidly

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