as salt is present in low concentrations to an area in which the solute is present in high concentrations. There are three types of osmosis: hypertonic is when there is high concentration and the cell has no water inside it (shrunk)‚ hypotonic is when there is low concentration and the cell has swelled up or in other words has a lot of water inside it‚ isotonic is when the water comes in and out of the cell and stays the same shape. All the carrots we put in the salt solution was from the same carrot
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placed in different solutions: i. hypotonic solution : A cell placed in it will gain water. ii. hypertonic solution: A cell placed in it will lose water: Also known as plasmolysis. iii. isotonic solution: A cell placed in it will neither gain nor lose water 10) Cells of Plants‚ fungi & bacteria: Contain both plasma membrane & cell wall. Cell wall is rigid‚ non-living & outer most covering‚ composed mainly of cellulose. 11) When placed in hypertonic solution‚ a living plant cell shows
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decreased in mass‚ (A2‚ B2‚ C2‚ D2‚ E2‚ and F2)‚ have had the opposite reaction occur. Diffusion and osmosis has moved water out of the cell‚ causing a decrease in mass. This is due to the dialysis cell containing a hypotonic solution as its environment at which it was submerged is hypertonic. This then causes the cell to shrink in mass. Due to the different data shown in Graph #1 and Graph #2‚ we know that the cells and environments contained different concentration gradients because not all data is
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hypothesized that osmosis will occur when there is an uneven distribution of solute in a solvent. The more abundant the solute is in solvent‚ the higher the rate of osmosis through the diffusion gradient forming a hypertonic or hypotonic solution. Solvent with equal or no solute forms an isotonic solution. Throughout this lab‚ data was collected and compiled to analyze these effects across selectively permeable membranes. The results indicated that the water molecules indeed move from high concentration
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substances to move across a membrane concentration gradient a gradual change in the concentration of solutes in a solution as a function of distance through a solution. crenation A process resulting from osmosis in which red blood cells‚ in a hypertonic solution‚ undergo shrinkage and acquire differentially permeable some substances pass through freely while other do not-small uncharged molecules pass through the cell membrane following their concentration gradient diffusion movement of molecules
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- Molecules move from hypertonic to hypotonic‚ until it reaches an isotonic state (or equilibrium). At that point‚ molecules will move equally across the membrane. 10-1 Cell Growth surface-area-to-volume-ratio: the ratio of surface area to volume cell division: division of a cell (also called
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change in mass Exercise 1D 1) If a potato core is allowed to dehydrate by sitting in the open air‚ would the water potential of the potato cells decrease or increase? As it dehydrates‚ the solutes become more concentrated so the solute potential becomes more negative and it decreases. 2) If a plant cell has a lower water potential than its surrounding environment and if pressure is equal to zero‚ is the cell hypertonic (in terms of solute concentration) or hypotonic to its environment? Will the cell
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| |concentration of solutes compared to another solution |e. hypotonic | | |f. isotonic | |__A__ the movement of molecules from an area of higher |g. hypertonic | |concentration to an area of lower concentration as a result of
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Ethylene Glycol‚ each measured at a different temperature(C)‚ and timed to see how many seconds hemolysis would take. Results of this lab do support the proposed hypotheses‚ as hemolysis did occur to the red blood cells introduced to both hypotonic solutions of NaCl‚ and the rate at which hemolysis took place was much more rapid as the temperature was increased. The solution with the most rapid hemolysis time was 0.18% NaCl and following close behind was the 0.45% NaCl. This makes sense because
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NaCl‚ an influx of water occurs: the cells swell‚ the integrity of their membranes is disrupted‚ allowing the escape of their hemoglobin in the process of hemolysis because the solution is hypotonic. When 0.7% NaCl was added to the bloods‚ there is no net influx or efflux of water because the solution is isotonic. When 0.16 M NaCl was added to the bloods‚ the cells lose their normal biconcave shape‚ undergoing
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