The Catalase Lab Essay Example for Free

The Catalase Lab Essay Conclusion- The Researcher’s hypothesis, â€Å"If more catalase is added then more oxygen (kPa) will be produced in a faster rate because there is more catalase to react upon† and â€Å"if less catalase is added then less oxygen (kPa) will be produced in a slower rate because there is less catalase to react upon.† It was supported by the data obtained because the data obtained showed us that the data of the 5 filter paper obtained showed a faster reaction rate and there was an 85. 5 kPa increase (See Analysis). The data of the 1 filter paper obtained showed a slower reaction rate of 12 kPa average increase. Based on the regular result of the 2 filter paper that showed a reaction rate of 22 kPa average increase, that shows that the hypothesis was supported. In the researcher’s opinion, the experiment went well and got the results that we expected. The reason we got the result that we did was because the hydrogen peroxide had more catalase to break down which caused more bubbles which creates oxygen. More catalase, more oxygen that is produced by the breakdown of the catalase. It’s shown by the data that 5 filter papers produced more oxygen (85.5 kPa) than the 2 filter paper (22 kPa) and the 1 filter paper produced less oxygen (12 kPa) than the 2 filter paper. During the experiment, there were couple of errors that caused our data to be inaccurate that we could of improved on. One of our errors was during the 2 filter paper trial. During one of the trial, around the 5-10 second period, I let out a little gas out of the test tube which lowered the kPa pressure. It’s shown on the graph that the pressure has dropped around the 5-10 second range by 4 kPa so that made the result inaccurate. This affected our average of the 2 filter paper average gas pressure. This could have been prevented if I didn’t loosen up the stopper which lead to the escape of gas in the test tube. Another error that we had that we can improve on is the constant pressure that is put onto the stopper on the test tube to measure the gas pressure. It’s shown on the graph that trial 1 2 of each 1,2, 4 filter paper is not consistent showing the difference between trial 1 trial 2 This can affect the kPa average which shows inconsistency. This could have been prevented if we didn’t put so much pressure on the stopper on 1 trial and then not put as much pressure on the stopper on the next trial. Research shows that this can help determine how much oxygen can be produced is to get the hydrogen peroxide to react to the catalase. Research shows that the different environment can affect the production of oxygen in the experiment. More catalase leads to more oxygen production and less catalase leads to less oxygen production. This can be used to determine how chemical breaks different things down and what it produces in the end. Also shows that different environment can change results of different chemical reactions. Hydrogen Peroxide is used on cuts to clean out debris. The Hydrogen Peroxide bubbles because the catalase in the blood is in contact with the peroxide which bubbles out the debris.

Dyslexia :: essays papers

Dyslexia The problem that effects one out of every ten kids in the United States of America is dyslexia. Although to some people this disorder may be very noticeable, it can really sneak up on you. Most of the time kids with dyslexia aren't recognized until they are about eight or nine. The most important thing to remember is that is takes time to solve, and sometimes cannot be cured at all. Dyslexia develops during the first six months of gestation . Neurons are churned out in the brain's ventricular zone. Attached to fibers, the neurons travel to the cerebral cortex, which contains the language centers. Here they hit a barrier, stop and take their place in layers above previously deposited neurons, (which is normal). In the brains of dyslexics, how-ever, there are breaches in the barrier and the neurons enter them, leaving clumps of nerve cells called ectopias, which appear to interface with the brain's ability to receive and transmit certain messages. They are now finding that dyslexia can run in the family. If you or your other relatives have dyslexia that means that there is a chance that your own child could have it. Unlike what most people think, dyslexia is not to be blamed on the parent for negligence in teaching reading and writing. Dyslexia is not any ones fault it simply occurs when the barrier in the language center of you brain cracks. In some experiments done by the University of Montreal, they are comparing good adult readers to dyslexic adult readers. In most cases the adult dyslexics were at about the high school level. When the adult dyslexics were compared to third graders in matching sounds with letters, they scored below the eight and nine year olds that were tested. It's not just a visual problem, actually they can see the letters fine, it is more of a comparing problem. Dyslexics usually cannot spell simple words by just hearing someone speak them to them. Some of the most confusing words for them are cat and dog. Although over time the symptoms can be fine-tuned, they never go completely away. As said before dyslexia is not a disease it cannot be cured with any pill or medicine. The only cure so far is many long and slow classes of multisensory sessions. These sessions go through each letter, sound, syllable, etc. until other parts of the brain help the person to recognize the letters in another helpful way.

Invasion of the Drones Essay

The constitutional issues that the people have raised on drones are the right to privacy, which is guaranteed in the fourth amendment. The Fourth Amendment protects against â€Å"unreasonable searches and seizures. † It guarantees Americans’ right to privacy and requires police to obtain warrants or have â€Å"probable cause† to search someone’s property. This could violate the constitution because should police be require to obtain warrants to take photos and collect other information with the Drones? Then in the Fifth Amendment it guarantees Americans accused of crimes the right to â€Å"due process† under the law. The accused are entitled to a legal representation and to see the evidence that’s being used against them. This could violate the Constitution because drone strikes aimed at killing American terrorist suspects in foreign countries could violate the Amendment. I share the concern for the violation of the Fourth Amendment, because I would feel that I’m under watch all the time, and that at any time the Police could be collecting information or taking pictures of me because they have the equipment to do so. Then what if they used these pictures and information to give them a probable cause to search my house, but they didn’t find what they were looking for. The technically violated my privacy for no reason. When most people hear the word drone, they probably this of how the drones have been used in the last decades. Which were the drones were used to kill suspected terrorist in hot spots like Pakistan and Yemen. Or one particular incident that attracted a lot of attention was in September 2011, the C. I. A. drone strike in Yemen killed an American citizen, a radical cleric who preached holy war, which violated his Fifth Amendment rights. This might affect the public’s receptiveness to the domestic use of drones because a new federal law paved the way for drones to be used commercially in the U. S. nd made it easier for government agencies to obtain them. The Department of Homeland Security even offered grants to help local authorities buy drones. Various sensors, included cameras can even be attached to the drone. Senator Patrick Leahy said that this fast-emerging technology is cheap and could pose a significant threat to the privacy and civil liberties of millions of Americans. It is another example of a fast-changing policy which we need to focus to make sure it is used correctly.

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FIN 4604: Sample Questions III 1). Assume that the Swiss franc has an annual interest rate of 8% and is expected to depreciate by 6% against the dollar. From a U.S. perspective, the effective financing rate from borrowing francs is: a) 8% b) 14.48% c) 2% d) 1.52% e) 14% 2). Assume that the U.S. interest rate is 11% while the interest rate on euros is 7%. If euros are borrowed by a U.S. firm, they would have to ________ against the dollar by _______ in order to have the same effective financing rate from borrowing dollars. a) Depreciate; 3.74% b) Appreciate; 3.74% c) Appreciate; 4.53% d) Depreciate; 4.53% 3). When a U.S. firm borrows a foreign currency and has no offsetting†¦show more content†¦e) The World Bank 12). Assume U.S. interest rate is 7.5%, New Zealand rate is 6.5%, the spot rate of the NZ$ is $.52, and the one-year forward rate of NZ$ is $.50. At the end of the year, the spot rate of NZ$ is $.48. Compute effective financing rate for a U.S. firm that takes out a one-year, uncovered NZ$ loan? a) –1.7%. b) 0.0%. c) 14.7%. d) 15.4%. e) 8.3%. 13). A negative effective financing rate for a U.S. firm implies that the firm: a) Will incur a loss on the project financed with the funds. b) Paid more interest on the funds than what it would have paid if it had borrowed dollars. c) Will be unable to repay the loan. d) None of the above. e) Paid back an amount less than originally borrowed 14). A U.S. firm plans to borrow Swiss francs today for a one-year period. The Swiss interest rate is 9%. It uses today’s spot rate as a forecast for the franc’s spot rate in one year. The U.S. one-year interest rate is 10%. The expected effective financing rate on Swiss francs is: a) Equal to the U.S. interest rate b) Less than the U.S. interest rate, but more than the Swiss interest rate c) Equal to the Swiss interest rate d) Less than the Swiss interest rate e) More than the U.S. interest rate 15). Assume Jelly Corporation, a U.S.-based MNC, obtains a one-year loan of 1,500,000 Malaysian Ringgit (MYR) at a nominal interest rate of 7%. At the