igure shows the effects osmosis on animal and plant cells put in three different
ID: 135937 • Letter: I
Question
igure shows the effects osmosis on animal and plant cells put in three different types of surrounding fluid. H2o Animal cell: plasma membrane Hao 4a. Which animal cell looks like the egg in corn syrup? Plant cell: plasma membrane cell wall 4b. Which animal cell looks like what could have ?? happened to the egg in water if the egg didn't have a strong shell membrane around it? wilted Net movement of water out of cell Balanced water movement Net movement of water into cell cytosol, a watery substance with a high concentration Inside the cell membrane, each cell contains of dissolved molecules and ions. Sa. . For a cell in pure water, which has a higher concentration of free water molecules? the cytosol inside the cell or the water in the beaker Y Will more water diffuse into the cell or out of the cell? Explain your reasoning. wWoter wll be dbssbed water cell cytosol 5b. Does the cellin pure water match A- or B_- or C in the figure at the top of the page? 6a. For a cell in very salty water, which has a higher concentration of free water molecules Assume that the very salty water has a higher concentration of dissolved substances than the cytosol.) the cytosol inside the cell or the very salty water in the beaker Will more water diffuse into the cellor out of the cell?Explain your reasoninExplanation / Answer
The movement of water across a selectively permeable membrane like a cell membrane is called osmosis and osmosis occurs from a region of low solute concentration to a region of high solute concentration. This kind of water movement heplps to equalise the solute concentration on either sides of a membrane,that is interior and exterior of a cell in this case.
Dissolved substances in a sovent is called as solute and in the given question the concentration of dissolved substance including salt (solute) is more in the water in which the cell is placed than the cytosol. So, water will move from the cytosol towards high solute concentration that is towards the very salty water in the beaker. Such a movement of water away from the cytosol results in the shrinking of both plant and animal cells.
This is the major reason for wilting of plants which is shown the figure A. So it is said that salt can kill plants.
Movement of water into the cell makes the cell turgid and helps in the maintan the upright structure of the plant as shown in figures B and C.
The slug dies when salt is sprinkled over it because water from the body of the slug moves towards salt outside its body and the slug slowly shrinks and dies.
Salt increases osmosis.
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