Conclusion And Evaluation Of Osmosis Potato Lab - 889 Words

Saam Baharmand Period 5 11 October 2014 Conclusion and Evaluation of Osmosis Potato Lab Hypothesis: I believe that the O Molar (M) solution of sugar and distilled water will be isotonic because there is no sugar in the solution. This Hypothesis was not supported by the results of the lab. 1) The line graph of the data collected shows the least amount of change in mass (1.8%) in the potato soaked in the 0.2M sugar solution. This means that the potatoes soaked in the 0.2M solution were the most isotonic of all the potatoes. 2) The beginning mass of the potato soaked in 0.2M solution was 10.6g and the ending mass was 10.8g. This data collection proves that there was no significant loss or gain of mass in the potato (soaked in 0.2M sol.) thus making it isotonic. 3) The percent (%) change in mass of the potato in the 0.0M sugar solution was recorded on the graph at 31.8%. This means that there was a significant increase in mass of the potato thus making the solution hypertonic and the potato cells hypotonic. Variables Independent: 5 interval sugar solutions of 0.0M, 0.2M, 0.4M, 0.6M, and 0.8M (mixed with distilled water) Dependent: % Mass Change of potato after 24 hours in solution Quantitative Relationship: When the intervals of sugar solution change, the % mass of the potato changes as a result. The 0.2M solution proved to the most isotonic while the 0.0M and 0.6M potatos proved to be the most hypotonic and hypetonic respectively. The potato of the 0.2M sol.Show MoreRelatedPotato Cubes Mass Lab Report1117 Words   |  5 Pages 2. Research Question: How will a potato cube’s mass change if put in a mixture of Glucose and Salient together vs a potato cube just being put into a solution with Glucose or Salient. 3. Background Information: Diffusion is where particles move from areas of higher concentration to areas of lower concentration. Osmosis is the diffusion of water. Glucose (sugar) will not diffuse as much as Salient because there is already sugar inside of the potato so not as much water be affected by diffusionRead MoreEffect of Different Concentrations of Salt on Potato Cell Mass1461 Words   |  6 Pages Aim To investigate the effects of increasing salinity on potato cell mass. Background Information This experiment is based upon osmosis. Osmosis can be defined as the net movement of water molecules from a region with high concentration to a region with low concentration. This movement must take place across a partially permeable membrane such as a cell wall, which lets smaller molecules such as water through but does not allow bigger molecules to pass through. This processRead MoreMicroscopy, Cell Structure And Function1208 Words   |  5 Pagescell structure and function TASK 3 Write a scientific report on osmosis experiment showing the: Aim, Introduction, and Hypothesis. 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This will remainRead More Investigate the Osmosis of Potato Cells in Various Salt Solutions2525 Words   |  11 PagesInvestigate the Osmosis of Potato Cells in Various Salt Solutions Introduction I have been asked to investigate the effect of changing the concentration of a solution on the movement of water into and out of potato cells. I will be able to change the input of my experiment. The input variable will be the concentration of the solution. The 100% solution is sodium chloride dissolved in water (salt water). This will be referred to as the 100% solution from now on. But the type of solution is notRead MoreOsmosis Internal Assessment - Biology Higher Level3984 Words   |  16 Pages| The effect of salinity on osmosis of solanum tuberosum L.(potatoes) | Biology HL Internal Assessment – Year 10 | | Teresa Nguyen | | Table of Contents 1 DESIGN 2 1.1 Defining the problem 2 FOCUS QUESTION 2 HYPOTHESIS 2 BACKGROUND INFORMATION 2 INVESTIGATION VARIABLES 3 1.2 Controlling Variables 3 TREATMENT OF THE CONTROLLED VARIABLES 3 CONTROL EXPERIMENT 4 1.3 Experimental Method 4 MATERIALS 4 RISK ASSESSMENT 5 METHOD 5 2 DATA COLLECTION and PROCESSING 7 2.1 Recording RawRead MoreOsmosis in Different Concentrations2449 Words   |  10 PagesI am going to investigate osmosis when potato is placed in different   concentrations of sucrose. I am aiming to witness osmosis in 5   different concentrations of sucrose. I will use 5 varying   concentrations so that I have a wider spread to compare the results,   and check that I don’t have any anomalies   Prediction   Osmosis  is the process of diffusion of water molecules from a weaker   solution into a stronger solution, through a semi  permeable membrane.   The tiny pores in the membraneRead MoreThe Four Main Types Of Tissues2505 Words   |  11 Pagescell structure and function TASK 3 Write a scientific report on osmosis experiment showing the: Aim, Introduction, and Hypothesis. Risk assessment, Procedure, Results, Analysis and conclusion, Evaluation, Sources or error, Anomalous results, Biological or industrial significance, Health and safety. A.C.2.2 AIM: Investigating the effect of Different concentration of Sucrose on Osmosis in potato chips. INTRODUCTION: First of all, Osmosis is the net movement of water molecules from an area of high waterRead MoreDiffusion And Osmosis And The Cell Membrane2124 Words   |  9 Pagessolute concentrations on both sides of the membrane are equal. The diffusion of free water across a selectively permeable membrane, whether artificial or cellular, is called osmosis. The movement of water across cell membranes and the balance of water between the cell and its environment are crucial to organisms. (Diffusion And Osmosis - Difference And Comparison | Diffen). A semi-permeable membrane known as the cell membrane surrounds the living cells of both plants and animals. Both solute concentrationRead More The effect of osmosis in potato cells with different concentrations of sucrose solution1887 Words   |  8 PagesThe effect of osmosis in potato cells with different concentrations of sucrose solution Aim: To test the effect of different concentrations of sucrose solution to osmosis in a potato cells by putting potato pieces in test tubes of water containing different concentrations of sucrose solution. Scientific Theory: Osmosis is defined as the movement of water molecules across a partially permeable membrane from a region of high water concentration to a region of low water concentration

Diabetes in Developing Countries Free Essays

Diabetes in developing countries Deaths from diabetes, which has two primary forms including type1 and type2 diabetes, have become a significant problem in the world. Nowadays, diabetes is still a disease not having precise method to cure. As a result of surplus blood sugar, it has a negative effect on the human body and leads to several complications, such as vision problems, kidney damage, nerve damage and heart and circulation problems (Pollock, 2006). We will write a custom essay sample on Diabetes in Developing Countries or any similar topic only for you Order Now Consequently, the increased risk of these diseases makes it become one of the major causes of deaths. For example, according to the WHO (2011), more than 346 million people were diagnosed with it worldwide and between 50% and 80% of them died from CVD. With the development of health care, the mortality in developed countries was decrease, while the situation in developing countries is so serious that 80% of diabetes deaths exist in low and middle income countries (WHO, 2011). For instance, such countries in The Middle East, Pacific Islands and Southeast Asia had 115million diabetic patients in 2000 and the WHO (2011) predicts that the number will double between 2005 and 2030. To mitigate the effects of diabetes, the causes of it need to be detected. Type 1 diabetes, which is known by lacking insulin production, results from several causes and possible factors. First, genes attribute mainly to it. More than 18 genetic locations related to it have been discovered by researchers and they have found that people with an especially HLA complex which means human leukocyte antigen, are more likely to develop it. A good illustration of it is other autoimmune disorders may caused by such complexes, such as rheumatoid arthritis, ankylosing spondylitis, or juvenile rheumatoid arthritis (Smith, 2010). The second factor is a viral infection which may affects the disease by attacking immune system. For instance, Kamiah (2010) states that a series of diseases from gastrointestinal problems to myocarditis can created by the coxsackie B virus. In addition, there are some special conditions which may attribute to it. For example, certain drugs including corticosteroids, beta blockers, and phenytoin, rare genetic disorders such as Klinefelter syndrome and Wolfram syndrome, and hormonal disorders such as acromegaly and hyperthyroidism all raise the possibility of it (Simon, 2009). It has been one of the most increased diseases worldwide, however, type 2 diabetes is more common. Unlike type 1 diabetes, causes of type 2 diabetes, which results from the ineffective use of insulin (WHO,2011), usually are multifactorial. First, being overweight or obese is a primary reason for it. The increased risk of it may bring several complications including heart disease, stroke and some cancers. A good illustration of this is 82% of people with it are caused by overweight or obese and such complications (Vann,2009). The second is genetic factors which have been found more than 10 genic material associated with it. For example, there are more possibilities for people to get it if they have close relatives having it, such as parents and siblings. Thirdly, ethnic origin also plays a part in it. For instance, NHS (2010) points out that people with it from South Asian, African, and Middle Eastern are six times likely than people in the UK. In addition, incorrect living styles such as poor eating habits, too much TV time and physical inactivity also have a negative effect on it. It is often not a single factor but two or more causes above combined to lead to it. According to the CDC (2010), such combinations give rise to approximately 95% of it in the U. S. As can be seen from data, diabetes in developing countries has become a huge problem and the mortality from it has a continued increase worldwide. Not only government, but people should change their attitudes and aware the importance in order to prevent it. How to cite Diabetes in Developing Countries, Essay examples