the plasma membrane. • Hypotonic : ➢ Having a lesser osmotic pressure in a fluid compared to another fluid‚ as in a ‘hypotonic solution’ – compare: hypertonic and isotonic • Hypertonic: ➢ Having a higher osmotic pressure in a fluid relative to another fluid. • Isotonic: ➢ Having the same (or equal) osmotic pressure and same water potential since the two solutions have an equal concentration of water molecules. MATERIALS:
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concentration to a lower concentration. Osmosis is a diffusion that allows movement of water through a selectively permeable membrane. Osmosis occurs until it reaches equilibrium‚ or when the concentration on each side is the same. This is called an isotonic solution. A solution with differing concentrations is hypertonic on the side that is higher in concentration‚ and hypotonic on the lower concentration. The purpose of this experiment is to show the effects of osmosis on the de-shelled egg. I hypothesize
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means that they do not require energy or pumps. There are different environments created due to diffusion. There are hypotonic‚ hypertonic‚ and isotonic environments. Hypotonic is when the solution has a lower solute concentration compared to the water potential. The hypertonic solution has a higher solute concentration and lower water potential. In an isotonic solution‚ there is no net movement and there is an equal concentration of solutes and water. In our lab‚ we modeled diffusion and osmosis with
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solutes. We can say that the osmolarity of a solution is the total concentration of osmotically active solutes. An isotonic solution has the same osmolarity of a tissue‚ a hypertonic has a higher and a hypotonic solution has lower. When testing hypertonic and hypotonic solutions to find out if water enters or leaves it is possible to deduce what concentration of solution will be isotonic and with this find the osmolarity. Water moves across the cell membrane by osmosis‚ and if the total concentration
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solution C was isotonic. To confirm the tonicity of unknown solutions A‚ B and C‚ a potato strip was placed in 3 separate tubes containing each unknown solution. After each potato strip soaked for twenty minutes it was proven; unknown solution A was hypertonic due to the flaccidity of the potato strip. Unknown solution B proved to be hypotonic because the potato felt extremely rigid. Lastly‚ the potato strip soaking in unknown solution C was flexible which proved to be isotonic. From those results
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ocean’s water is hypertonic (lower water concentration) and the human body is hypotonic (higher water concentration)‚ causing the water inside the human body to move from its high concentration to the ocean’s low concentration. Bag 1 represents an isotonic solution‚ where the
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for the topic of osmosis‚ the movement of water from high to low concentration. Five artificial cells were created‚ each being filled with different concentrated solutions of sucrose. These artificial cells were placed in hypertonic‚ hypotonic‚ or isotonic solutions for a period of 90 min. Over time‚ the rate of osmosis was measured by calculating the weight of each artificial cell on given intervals (every 10 minutes). The resulting weights were recorded and the data was graphed. We then could
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Summaries: What does health mean to individuals? Health is the interaction between the physical‚ social‚ emotional‚ mental and spiritual dimensions. Many terms have emerged to express the nature of health‚ such as well-being‚ wellness‚ health‚ status‚ and state of being. Health is dynamic‚ changing over time and means different things to different people during different times in their life. Health can be viewed as relative in relation to another period of time or in relation to one’s potential
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Osmosis 4/13/13 MLT1 Lab 9 Performed at Home Microbial Growth There are three types of environments in which cells are located which include isotonic‚ hypotonic and hypertonic. In an isotonic environment‚ the amount of water and solute are the same both inside and outside of the cell. As water drifts into the a cell‚ the same amount flows out creating a balanced environment both inside and outside of the cell. When there is a high level of
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