Effect of Osmosis on RBC’S Objectives : 1)Find the difference between three Red Blood Cell’s samples that undergo Osmosis in : a)0.5 % Distant Water solution. b)0.9 Nacl solution. c)10 % Nacl solution. 2)What materials did you use. 3)Define the procedures that the three samples undergo. 4)Give a brief result for your experiment. Materials : Sterilized lancets ; 3 blood samples ; 3 slides ; antiseptic wipes ; bandages ; tooth picks ; 0.5 % d.w solution ; 0.9 % Nacl solution ; 10% Nacl
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No. 104 June 2012 Peer Pressure Peers play a large role in the social and emotional development of children and adolescents. Their influence begins at an early age and increases through the teenage years. It is natural‚ healthy and important for children to have and rely on friends as they grow and mature. Peers can be positive and supportive. They can help each other develop new skills‚ or stimulate interest in books‚ music or extracurricular activities. However‚ peers can also have a negative
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Osmosis and Diffusion Lab Observations: Diffusion: | Before | After | Color of liquid sack | clear | blue | Color of liquid in beaker | dirty yellow | golden | Glucose present Stick Test | no | yes | Color of the test stick | No change in color | Green | Osmosis: | Fresh | Salt | Beginning mass of potato | 2.51 | 2.16 | Texture of potato | Dry | Dry | Overnight mass | 3.12 | 1.84 | Overnight Texture | Hard‚ strong | Squishy‚ pliable | Data and Analysis: Diffusion:
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My Investigation on osmosis Osmosis is a special kind of diffusion. While diffusion can describe the movement of any kind of molecule‚ osmosis is only about the movement of water molecules. To show this diffusion I will be using potato discs‚ of the same size and mass‚ in different concentrations of sugar solution to find out whether the mass of the discs increases or decreases depending on the concentration. I predict that when the sugar solution is 0% the mass will increase as there is
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“College Pressures” by William Zinsser‚ the master of Branford College‚ one of the Residential colleges at Yale University‚ details the various types of stresses that today’s college students encounter. Zinsser claims that there are four different kinds of pressure: economic‚ parental‚ peer‚ and self-induced. The economic pressures are due to the ever-increasing high cost of a college education and the desire to get out of college with as little debt accrued as possible. Economic pressure is tied
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bar graph plotted‚ it could be seen that when there was a high concentration of sugar the mass of beetroot decreased. This happened because water moved from the inside of the beetroot‚ where there was a high water potential into the sugar solution‚ which had a lower water potential. In the other four beakers where the concentration of sugar solution was less‚ the mass of the beetroot increased. This happened because water moved from the dilute sugar solution where there was a high water potential‚
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Peers become an important influence on behavior during adolescence‚ and peer pressure has been called a hallmark of adolescent experience.[1][2] Peer conformity in young people is most pronounced with respect to style‚ taste‚ appearance‚ ideology‚ and values.[3] Peer pressure is commonly associated with episodes of adolescent risk taking (such as delinquency‚ drug abuse‚ sexual behaviors‚[4] and reckless driving) because these activities commonly occur in the company of peers.[2] Affiliation with
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Cell Transport And Homeostasis The roles of different types of cell-membrane proteins in the preservation of body organs donated for transplant is very vast. Certain cell-membrane proteins carry several different types of nutrients that are beneficial and are sometimes very important to keep organs that are to be transplanted healthy and fresh. Organic nutrients are some very good preservers. One of the most transplanted organs is the kidney. It is important that this organ has nutrients
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Introduction In this experiment‚ I measured the impact of two different topical chemicals on growing bacteria over the course of a week. Bleach‚ water‚ hand sanitizer and hand soap were all variables used to observe the effects of the bacteria swabbed from my palm and fingers. Bleach has been the go to product for killing germs and it is because of the similar effects it has with high temperature on the proteins in bacteria. I hypothesized that bleach would be the most efficient way for killing the
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Transport System of Organisms Problems faced by Multicellular Organisms: a)Big size-the total surface area to volume (TSA/V) is decreased . Rate of diffusion of substances into and out of all body cells is low. b)Cells are often located far away from the external surface of the body. How multicellular organism overcome these problem? a)Have specialized structure to increase the surface area for the exchange of respiration gases. b)Have transport system to get gases respiration in and
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