Bibliography: Diffusion and osmosis. (n.d.). Retrieved from http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/diffus.html McGraw-Hill. (2006). How osmosis works. Retrieved from http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_osmosis_works.html
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a few types of diffusion. Three (3) of those are: Facilitated Diffusion- refers to diffusion of substances across a cell membrane with the help of transport protein. Dialysis- refers to the diffusion of solutes across a semipermeable membrane. Osmosis- refers to the diffusion of the solvent across semipermeable membrane. The concept of diffusion is widely used in physics (particle diffusion)‚ chemistry‚ biology‚ sociology‚ economics‚ and finance (diffusion of people‚ ideas and of price values)
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Circumference (cm) 0 its a raw hard egg 8cm 24 the shell of the egg has dissolved 8.5cm 48 its bigger than the size before. has a smooth glide to it. 9cm 72 it expaned. 9.5 Conclusion: Be sure to answer the following reflection questions in the conclusion of your lab report: Reflection questions need to be answered using complete sentences. Some questions may
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transport in which it does not have need of an active role for the membrane. Osmosis and dialysis are also occasionally called passive transports because they too do not require an active role for the membrane. Osmosis is movement of water across a semipermeable membrane of low concentration to a solution of high concentration. On the other hand diffusion is movement of molecules from a high concentration to a low concentration. Osmosis is a form of diffusion but a distinction would be that it deals essentially
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Membrane Functions: Aim: To demonstrate the process of osmosis using a chicken’s egg Hypothesis: I predict that the egg’s mass after 10 min. in the 5% salt solution would increase due to and balancing out the solution. In the 10% salt solution‚ the egg’s mass would decrease since there is a high amount of salt. In the dilute water solution‚ the egg’s mass will increase‚ as the membrane would take in that water. Materials: 1- One fresh egg 2- One plastic spoon 3- One plastic fork
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a probable name for this organism (1 point) b.Explain why the student came to this conclusion. (2 points) 4.Where in the cell are the chloroplasts located? (5 points) 5.In the Spirogyra cells that you observed on the virtual microscope‚ about how many circular green chloroplasts could you count in a single cell? (2 points) 6.What were the percent differences between the volumes of the potatoes in the osmosis experiment for each salt solution? (8 points) a. 0% b.1.75% c.3.5% d.7% 7
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{Online‚ Biology. “Osmosis.” Osmosis‚ Biology Online‚ 25 Dec. 2016‚ 2:27‚ www.biology-online.org/dictionary/Osmosis.} This means that water will flow through the naked egg’s outer membrane from the outside to the inside. This is because inside the egg has a lower concentration of water than outside the egg. Since osmosis is based around mainly water and substances with extremely low acidity‚ we decided to use plain water
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Osmosis in Potato Cells Interpretation My results show what I predicted would happen. My prediction was that as the concentration of sucrose increased the amount of water moving in or out of the potato would change. A low concentration of sucrose solution would make the potato increase in length and mass (become turgid). A high concentration of sucrose solution would make the potato shrink (plasmolysed) We can see this occurred‚ as at 0.1mol of sucrose solution the potato’s size increased by an
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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 of all dissolved solutes is not equal in both sides‚ the water molecules will need to move in or out of the cell. It moves depends on whether the cells environments is isotonic‚ hypotonic or hypertonic. Isotonic is
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concentration of solute in the potato’s cytoplasm by measuring the change in mass after the process of osmosis. Materials and Equipment: Refer to Biology 12 Lab Manual – Investigation 13 Procedure: Refer to Biology 12 Lab Manual – Investigation 13 Data and Observations: The Potatoes change in mass after the process of Osmosis Test Tube # | Concentration of Sucrose Solution (mol/L) | Initial mass (g) | Final mass (g) | Change in mass (g) | Percentage change
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