Saturday, January 25, 2020
osmosis in potato chips :: essays research papers
GCSE Biology: Osmosis in a Potato Aim To investigate the effect of placing a piece of potato in a given strength of sugar solution. Prediction I predict that, as the solution becomes more concentrated the more the cell will shrink, as the water, of higher concentration inside the potato cells, flows down a concentration gradient into the solution, which has a lower concentration of water molecules. If we say that the percentage change when the potato is placed in the 1M solution is x%. I predict that when the solution is 0.5M the percentage change will be 0.5x%, and when the solution is 0.25M strength I hypothesise the change will be 0.25x%. Variables Description: Dependant Variables The dependant variable is plotted on the y-axis. In this experiment this is the change of mass of the potato when it is placed in different strengths of sugar solution. Variables Description: Independant Variables The independant variable is plotted on the x axis and is what you choose to change in the experiment. In this experiement it is the strength of the sugar solution. Variables Description: Constant Variables These stay the same all the way through the experiment and are the fair test rules. In this experiment that are that the amount of sugar solution used must always me 10.0ml. This is to be placed into the test tube. The solution needs to always be at the same temperature. We will make sure that all experiments are at 20 degrees centigrade before we start the experiment. The size of the potato sample that we place into the solution also needs to be kept constant. A mass of 2.5-2.6g is sensible. The diameter is fixed as the potato cork borer always measures to the exact same measurement. We also needs to make sure that the potato is left in the solution for the same time, 30:00 minutes. Equipment †¢Ã‚     Potato †¢Ã‚     Standard Sugar Solution †¢Ã‚     Wash Bottle †¢Ã‚     Test Tubes and Test Tube Rack †¢Ã‚     Cork Borer †¢Ã‚     Scalpel †¢Ã‚     Cutting Board †¢Ã‚     Scales accurate to 2.d.p †¢Ã‚     10ml Syringe †¢Ã‚     Paper towels †¢Ã‚     Ruler †¢Ã‚     Stop Watch Method 1.     Firstly, the cork borer needs to be used to cut out a piece of potato at least 4 cm in length. This allows room for trimming off untidy edges. 2.     3.     On the cutting board the cylindrical piece of potato needs to be cut to 35mm. Using a ruler, measure this as accurately as possible and cut the potato to 35mm in length using a scalpel. 4.     Using the scaled weigh the potato to 2.
Thursday, January 16, 2020
School of Rock Review
You and your whole family will love the brand new film about to hit the big screen.. School of Rock! The lead role, Dewey Finn, is played by the legendary Jack Black (and I must admit, nobody could do any better) and direction is done by Richard Linklater, who appears to do an amazing job. After being kicked out of his garage band for the latest 10 minute long guitar solos, wannabe rock star, Dewey Finn must find a way to earn some money to pay his rent. Living in his best friend Ned's spare room with the constant furious temper of Ned's fiancà ¯Ã‚ ¿Ã‚ ½, Patti, Dewey is desperate to find a way to put a new band together better than any other, in order to fulfil Dewey's dream of winning Battle of the Bands. Teaching children would not be the most obvious of solutions, but when Dewey sees his chance to earn some extra money, he can't get to the chalkboard quick enough! After a day of Dewey putting his feet up and listening to children endlessly begging for learning and education, he soon comes to realise that the children have a very special talent for music. Suddenly, Dewey's enthusiasm for his teaching job no longer is the centre of attention in his mind; spotting a peculiar way to put a band together, he then replaces curriculum lessons with a schedule based around rock, consisting of homework involving listening to Dewey's collection of rock CD's. With the Battle of the Bands contest getting even closer, Dewey has to match his snobby school children to his hard-rocking competition. School of rock has everything a successful rock band needs, from lead guitarist to groupies, just inside the classroom. There's a feel good feel to the film, changing Dewey for the better, he learns to genuinely see the talent in the children. What impressed me most about School of rock is the hilarious comedy enough to make you wet your pants. Not everyone will enjoy School of Rock, and it's one of those films that'll require you to be in a good mood to enjoy, but if you are – you definitely will.
Wednesday, January 8, 2020
Executive Pay Should Be Regulated to Prevent Executives...
| | |Executive pay should be regulated to prevent executives paying themselves too much. | | | Table of Contents 1. Introduction 3 2. Case of Bank of America CEO Compensation 3 3. Arguments on Steep Executive Compensation 4 4. Conclusion 6 References 6 1. Introduction In this period of severe economic recession in Europe and America, executive pay†¦show more content†¦Now days the executives are paid rewards on the basis of the risks they faces in the high competitive markets not on the basis of their achievements. Following are the arguments against the immerse increment in the salaries of the executives: 1. Since 1980 to 2002, the competition and the growth in markets have become tougher and as a result there is a high responsibility. The executives are earning high amount just because they are running and managing companies which are growing very rapidly. Over the years the high increase inflation is generated were the ways in which payment was granted to the people, the change towards the shares from the stock options. T Those two things were happened at the same time. From 2002, the people reacted critically towards the the ways in which these executives were paid. The governance accusations of the shareholders pressurized that these executives are giving protection to themselves and are paid excessively high (Brick et al 2006). Now the executives can be eliminated in an easier way. Companies are paying them because these executives can be replaced very easily. Basically it is the title they paid on the basis of the risks they bear and outstanding performance for the coming year. On the other hand they are paid because stakeholders wanted them to be with the international market. If the companies have to give the response to a problem, there is a counter argument to sustain the option ofShow MoreRelatedEnron s Impact On The Natural Gas Industry2699 Words  | 11 PagesIntroduction: Enron was founded in 1985 as a result of a merger between Houston Natural Gas and InnerNorth of Omaha. During this time period there was a series of deregulations in the utilities industry which was highly regulated at the time. Enron original business was selling natural gas. Jeff Skilling developed the idea of a â€Å"gas bank†which was the middlemen for consumers and suppliers. Enron decided that if they were to increase their growth they needed to enter other markets due to theRead MoreThe Inequality Of The United States2537 Words  | 11 Pagesissues, conclusions and recommendations of each issue by the approach that has been made from the opening statement above. 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Box 433 Moorgate Place London EC2P 2BJ Tel: (07 I) 628-7060 ext.2565 Fax: (071) 6281874 From 1 Ja/rrrar~y 1 9 9 3 c/o The London
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