This Chip Can Tell If You’ve Been Poisoned Quick detection. This 2-cm-wide chip (inset) can quickly test for botulism‚ a deadly disease caused by theClostridium botulinum bacterium. When you are dealing with a deadly poison that can be found in food and is a potential terrorist weapon‚ you want the best detection tools you can get. Now‚ researchers in France have demonstrated an improved method to detect the most deadly variant of the botulinum neurotoxin‚ which causes botulism. Their test
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How does Lady Macbeth persuade her husband to murder the king? Lady Macbeth is very determined to become Queen after she reads the letter from Macbeth about the meeting with the witches. She thinks that it is meant to be that he will become the King "shalt be what thou art promised" and that she will become the Queen. Macbeth knows that if he wants to become the King of Scotland he will have to kill the current King‚ Duncan. Lady Macbeth knows her husband too well and that he will not
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Since potato cells were used for this type of experiment‚ in an Isotonic solution the solute and water concentration are the same as inside the cell in which the isotonic solution contains 0.9% NaCl. In other words‚ water moves in and out in the same amount without causing any changes. In a hypertonic environment‚ the solute concentration is greater and water concentration is less outside the potato cell in which the hypertonic solution contains 10.0% NaCl. This solution will cause the potato cells
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Osmosis using potato cores and sucrose solution 1.0 Abstract This experiment’s ultimate goal is to find the water potential of the potato cell. This was achieved through placing potato cores in different concentrations of sucrose (0.2%‚ 0.4%‚ 0.6%‚ 0.8%‚ 1.0%‚ 2.0%‚ 3.0% and 4.0%) solution and to observe how much water was gained or lost through osmosis to reach a prediction of the concentration within the potato cell. The results displayed that the concentration of sucrose within the potato cell is
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of a Potato Mishal Hasan Abstract Students in Biology find it difficult to understand the concept of tonicity and osmolarity in a real time situation. In this investigation‚ several concentrations of sucrose were used to determine the osmolarity of a potato. It was found that the concentration of sucrose was close to 3.6 in the potato used showing that it was isotonic. Anything above caused the potato to gain weight showing that it was a hypotonic solution and anything below caused the potato to lose
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History Summative: The Baby Boom The Baby Boom was one of the most important events in Canadian history and continues to impact how we live our lives today. After World War 2 ended‚ between the years of 1945 and 1965‚ there was a huge increase in population known as the Baby Boom. The Baby Boom occurred because soldiers came home from war with a victory and were finally ready to start a family with their wives or girlfriends in a time when there was a good economy. In 1959‚ 20 percent of all women
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Osmosis was clearly shown since the potato cylinders decreased or increased at different concentrations of sucrose. The results supported my hypothesis because for the 0.0 sucrose concentration the average percent change in mass was 16.9%. For the 0.2 concentration the percent change was 3
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foam that can be measured. ANALYSIS QUESTIONS 1. a) Describe the effect of damaging the potato on the catalase activity. With the increased level of damage to the potato‚ there appeared to be more activity within the reaction between the catalase and the H2O2. b) Explain at the cell level why crushing or macerating the potato has this effect. When you crush or macerate the potato‚ you are breaking the cell walls of each individual cell. Once this happens‚ the catalase is
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ABANDONED BABIES Problem of abandoned babies is becoming more serious. This case raises concerns for all parties. Many cases have been reported on abandoned new born babies. Where the baby normally discarded on garbage‚ toilets‚ in the rivers‚ and so on. solution to this problem needs to be done as smoothly‚ so that it cannot continue to spread and become more serious. To solve the case of dumping a baby in Malaysia‚ there are several points of the protection of infants were established. one
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Title: Osmosis and water potential Aim of the experiment: Finding the water potential of potato. Biological principles: Independent variable: concentration of the solution. Dependent variable: percentage changed in weight of the potato strips. Controlled variable: size of the potato strips‚ it can be controlled by cutting the length of the strips. Procedure: Table 1. Concentration of sucrose solution table Concentration/ M | Sucrose Solution/ ml | Distilled
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