Lab Topic: Movement of Materials Across the Cell Membrane—Potato Tuber Cells Introduction: Osmosis is a form of diffusion in which water diffuses through a selectively permeable membrane from a region of high concentration to a region of lower concentration. This form of diffusion takes place when the molecules in high concentration are too large to move through the membrane. Three factors that determine cell membrane permeability are shape‚ size‚ and polarity. For this experiment‚ it must
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Osmosis in Potato Tissue Experiment Background Information Osmosis can be defined as the movement of water across a semi-permeable membrane from a region of high water concentration to a region of low water concentration. The semi-permeable membrane allows small particles through it but does not allow large particles such as sodium chloride. Osmosis will continue until a state of equilibrium is reached i.e. there is no area with a higher or lower concentration than another area
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Abstract The experiment was carried out to investigate at which point the potato has reached its isotonic environment. From the results‚ when the concentration increase to 0.3M‚ the mass of the potato slices decreased by -3.26%. We can conclude we see that as we increased the sucrose concentration it was a decrease in the percent change. Introduction All cells have membranes that are selectively permeable. In other words‚ they allow certain things in and certain substances are not allowed to
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IB Biology Potato Lab Table 1: Trial Number | Concentration of Sucrose Solution (M) ±0.2 ml | Initial Mass of Potato Core Slice(g) ±0.1 | Final Mass of Potato Core Slices (g) ±0.1 | 1 | 0.0 | 7.7 | 9.3 | 2 | | 6.0 | 8.1 | 3 | | 6.2 | 7.4 | 4 | | 10.2 | 13.2 | 5 | | 8.7 | 10.3 | 6 | | 4.9 | 6.0 | 7 | | 9.2 | 10.4 | 1 | 0.2 | 5.8 | 6.0 | 2 | | 11.6 | 12.1 | 3 | | 2.5 | 3.1 | 1 | 0.4 | 14.4 | 13.9 | 2 | | 2.6 | 2.8 | 3 | | 8 | 6.5 | 1 | 0.6 | 7.3 | 5.3 | 2
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people understand to this day. The movement of the resettlement is central to canadian history‚ from aboriginal people‚ whose ancestors. The history of immigration to Canada extends back thousands of years. The three topics of the waves are‚ The Irish potato famine in 1820-1850. It was the Great Hunger was a period of mass starvation‚ The causes upon what happen there was a disease going around and it got around the colony. The second incident was the europeans in 1860-1920. It was when the europeans
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concentration of sucrose solution on osmosis in a potato. Preliminary Experiments One preliminary experiment was done before the main experiment. From the preliminary‚ we were trying to find out how osmosis actually occurred in potatoes‚ and gave us a vague idea on what the main experiment would be like. This preliminary will aid my prediction‚ which is stated below. The following apparatus was used for the preliminary: * 1 large potato (skin intact) * 3 boiling tubes * Set
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use lithium batteries in its flashes‚ but Yongnuo introduced a flash‚ Canon compatible‚ that uses a lithium-ion battery. The Yongnuo Speedlite YN686EX-RT is compatible with Canon’s RT- series of flashes‚ but contrary to Canon’s units uses a lithium-ion battery said to be faster and offer 750 full-power flashes from a single charge. When lithium batteries became a common thing in the market‚ some photographers managed to fry their flashes‚ because they picked a set of AA lithium batteries and used them
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I. The Irish Potato Famine was a catastrophic event in Irelands history. Almost a million people died during this harsh time. They had lost their main food source and barely had food for one person let alone their families witch consisted of 5-7 people on average. At the time they were considered a part of Britain but Britain did not help much during their crisis. The Irish Potato Famine of Ireland in 1845 resulted in a great population loss‚ a changed economy‚ and a substantial emigration of citizens
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George Garton will likely be liable for battery because he intentionally blew smoke in Martin Trout’s face. In general‚ battery is defined as touching with the intent to harmfully or offensively contact another person. In this case‚ Mr. Garton’s actions were purposeful and showed intent. Also‚ Mr. Garton’s actions were offensive because smoke is an unpleasant substance. Therefore‚ the issue here is whether blowing smoke in Mr. Trout’s face is considered touching. Mr. Garton’s actions will likely
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concentration. Hypotonic solution is the solution with the lower salt concentration. My hypothesis is that the potato core will increase in size. When the solution is hypertonic‚ the potato will decrease in size making the potato hypotonic. Osmosis is really interesting‚ that is why I chose to write this report about it. Materials and Methods We first cut out six cores out of a potato. We trimmed them all to the same length using a razor. After we had cut them to the same size we weighed them using
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