Life on the Color Line Essay Example for Free

Life on the Color Line Essay A- Gregory Howard Williams wrote the book. Before you read the book you have no idea who he is. Once you read the book you find out that he is mulatto and was raised in a community that was extremely prejudice against blacks. The authors’ point of view is his own story. P-The book takes place in Virginia at the beginning of the book from 1943-1952, and then in Muncie, Indiana from 1952-1969. The source was produced in 1995. The meaning of the source doesn’t really change at all, but now that it is after the problems of racial segregation and discrimination, we are able to read it and look back on the problems of our society and make sure it doesn’t happen again. P- Other than what I learned from the book, I actually knew a lot. I knew that in the 1940’s-50’s there was a major problem with racial discrimination. I knew that the way whites treated blacks was terrible and unjust. I also knew that blacks looked toward whites as horrible people and that it was taboo to interracially date/marry. This helped me better understand why the whites were treating Greg the way that they were and why the blacks had a hard time accepting him into their community. A- The audience is for teenagers and adults. Its pretty graphic so it is intended to be taken seriously and with an open mind. It is it is more so towards teenagers and people with hard lives to show that they aren’t the only ones going through something difficult, because he went through some really complicated times and is now leading a successful, happy life. R-This book was produced in order to show what life was like for the mulatto race and how difficult it was for them. It is an inspirational book to tell people that they can go through anything if they keep their eyes on a goal and work towards it, no matter how hard it gets. T-The theme of the book was trials and success. It tells of his early child hood having to be both white and black in a community that was extremely prejudiced. It shows how he finds his way by keeping with the black influence and embracing it as his own lifestyle. It shows the difficulties he had with bullies and ignorant people and how he used academics as a way to stay out of trouble. It shows how he has to live with an alcoholic father and how he takes care of him even though he would probably be better off not worrying about him. It shows how he went through an extremely difficult childhood and was able to graduate college with a doctorate in law. S-This book is significant because it gives us a deeper look into how messed up our society was during the late 1900’s. It gives us a better understanding into the life that we aren’t familiar with because we usually just look at the black or white side of the story. Life on the Color Line makes us realize that it was just as hard for mulattos in that time as it was for blacks.

How Educational Systems Will Operate In Future Essay examples -- Techn

How Educational Systems Will Operate In Future The education system over the last 100 years has largely remained unchanged despite major technological advancements and the changing global economic environment that require new skills and experiences. Despite numerous pedagogical concepts being introduced in the education system, the traditional mode of instruction has continued to dominate today’s classrooms. However, though most educators have been hesitant in adopting technological advancements and applying them in education, the wave of change is inescapable. Future educational systems will have to embrace new ideas in order to be more effective in preparing students for the changing global economic demands. This paper reflects on the views of authors of two journal articles on the topic of how educational systems will operate in the future. The main ideas presented in this paper include teachers’ competencies in preparing students for a knowledge economy and how educational computing will operate in the future. According to Andrawes, students need to be equipped with skills needed in accessing and processing the wide array of information made available by the advancing technology. Educators also need to equip students with the knowledge of using computers and be familiar with the wide range of technologies (2011). In addition, it is incumbent upon the stakeholders in the education system to incorporate technologies used in the marketplace and the newly emerging ones into the school program. Beyond meeting these recommendations, Andrawes (2011) go further and propose that educational systems need to focus on providing education to people of all ages. In this regard, schools in the future will be continuous and constant facili... ...geluth, 2011). In addition, the instruction function will play a fundamental role in assisting in the development of new instructional resources and managing a personalized scope of instruction based on the nature of each project. Within the instruction function, a fully integrated assessment function will provide original tasks aimed at assessing the performance of each student. In addition, the assessment function will be crucial in facilitating prompt feedback and in designing and developing personalized assessment of each student. Besides these primary multiple functionalities, the PIES will accommodate secondary functions such as information on school personnel, general student data, communication, and PIES administration. Therefore, PIES will be a major development that points to how future educational systems will operate (Aslan & Reigeluth, 2011).

Enzyme Catalysis Essay

Enzymes are proteins that act as catalysts to regulate metabolism by selectively speeding up chemical reactions in the cell without being consumed during the process. During the catalytic action, the enzyme binds to the substrate – the reactant enzyme acts on – and forms an enzyme-substrate complex to convert the substrate into the product. Each type of enzyme combines with its specific substrate, which is recognized by the shape. In the enzymatic reaction, the initial rate of activity is constant regardless of concentration because the number of substrate molecules is so large compared to the number of enzyme molecules working on them. When graphed, the constant rate would be shown as a line, and the slope of this linear portion is the rate of reaction. As time passes, the rate of reaction slowly levels with less concentration of the substrate. This point where the rate starts to level is called the Kmax, in which the peak efficiency of enzymes is reached. In order to start the reaction, reactants require an initial supply of energy called activation energy. The enzymes work by reducing the amount of free energy that must be absorbed so that less required energy leads to faster rate of reaction. The rate of catalytic reactions is affected by the changes in temperature, pH, enzyme concentration, and substrate concentration. Each enzyme has an optimal temperature at which it is most active; the rate of reaction increases with increasing temperature up to the optimal level, but drops sharply above that temperature. Most enzymes have their optimal pH value that range from 6 to 8 with exceptions, and they may denature in unfavorable pH levels. An increase in enzyme concentration will increase the reaction rate when all the active sites are full, and an increase in substrate concentration will increase the rate when the active sites are not completely full. The enzyme used in this lab is catalase, a common catalyst found in nearly all living organisms. Catalse is a tetramer of 4 polypeptide chains, each consisting of more than 500 amino acids. Its optimum pH is approximately 7, and optimum temperature is about 37 Â °C. The primary catalytic reaction of catalase decomposes hydrogen peroxide to form water and oxygen as shown by the equation: 2 H2O2 > 2 H2O + O2 . Within cells, the function of catalase is to prevent damage by the toxic levels of hydrogen peroxide by rapidly converting them to less dangerous substances. In this lab, we will show how catalase from 2 different sources (pure and potato extract) affects the rate of reaction by using titration to measure and calculating the decomposition rate of hydrogen peroxide (H2O2) to water and oxygen gas with enzyme catalysis. Part II – Material and Methods In Part 2A, I tested for catalase activity by using the seriological pipette to transfer 10mL of H2O2 into a beaker. The serological pipette was utilized in all transfer of substances in this lab because of its high quality and accuracy in measurement, especially with delicate control of volume and graduations that extend all the way to the top. Then, I used another serological pipette to add 1mL of catalase in the beaker. After observation, I analyzed and recorded the results. The above procedure was repeated with the boiled catalase solution using another beaker and serological pipette. I analyzed and recorded the results after examination. In Part 2B, I established the baseline to determine the amount of H2O2 present in the nominal solution without adding the enzyme. I used serological pipettes (for the same reason mentioned above) to transfer 10mL of H2O2 in a beaker previously labeled as baseline and 1mL of distilled H2O into the same beaker after that. Next, I added 10mL of 1. 0M H2SO4 into the beaker and mixed the solution by gently swirling the beaker. The sulfuric acid was used to lower the pH and thereby stopping the catalytic activity. Using the serological pipette, I removed 5mL of the mixture into a different beaker to assay for the H2O2 amount through titration. This was done particularly through the titration technique because it can determine the concentration of a reactant – in this case, remaining amount of H2O2 – with volume measurements. After recording the initial burette reading, I placed the assay beaker underneath a burette containing KMnO4 and gradually added the titrant with controlled drops while gently swirling the beaker until the color of the mixture turned permanently pink or brown. Then, I recorded the final burette reading. The potassium permanganate was specifically used because its excess amount will cause the solution to change color, and the amount used to change the color is proportional to amount of remaining H2O2. In Part 2D, I measured the rate of H2O2 decomposition with enzyme catalysis in 5 different time intervals of 10, 30, 60, 120, and 180 seconds. After labeling 5 beakers with each time interval, I transferred 10mL of H2O2 to each beaker with the serological pipette (for the same reason mentioned in Part 2A). For the 10 second time interval, I added 1mL of catalase extract and swirled the beaker for 10 seconds. Next, I added 10mL of H2SO4 to stop the reaction. I repeated the above procedure 4 more times, varying the 10 second time interval to 30, 60, 120, 180 seconds. Then, using the serological pipette, I removed 5mL sample from each of the 5 beakers and found the amount of remaining H2O2 by titration with KMnO4. The reason and procedure for titration was identical to those in Part 2B. Part IV – Discussion In Part 2A, the enzyme activities of catalase and boiled catalase were observed. According to the data, the bubbles began to form in the mixture when the catalase was poured into H2O2. The bubbles are the O2 that results from the breakdown of H2O2 as the catalase takes effect. In the case of boiled catalase, there were no bubbles, which points to the absence of oxygen. This absence shows that unlike previous catalase, boiled catalase had no effect on the rate of reaction. The data supports the background information provided in the Introduction. The boiling of the catalase will alter its temperature above its optimal level, and that explains the significantly decreased reaction in the boiled catalase mixture compared to the catalase mixture. In Part 2B, the data represents the amount of H2O2 used in the reaction without enzyme catalysis, hence establishing the baseline. The collected data of initial reading and final reading was used to calculate the baseline of 4. 7mL KMnO4, which is proportional to the amount of H2O2. The 4 groups combined data as a class and took the average of the 4 baselines by liminating the highest and lowest number and taking the average of remaining 2 numbers. The established baseline was 4. 4mL. In the Charts A1 through B2 of Part 2D, the collected data of initial reading and final reading was used to calculate the amount of KMnO4 by subtracting the initial from the final. Since the amount of KMnO4 is proportional to the amount of H2O2 remaining, it was used to calculate the amount of H2O2 used in the reaction by subtracting it from the baseline. The computed data and the time intervals were graphed into 2 scatter plots separated by the type of catalase (pure and potato extract) with the lines of best fit drawn. The trend that should have shown in all 4 graphs was a steady increase from zero in the beginning and a gradual leveling off into a horizontal line towards the end. However, the actual results did not exactly come out as expected. In Graph A1, the data of Group 1 did steadily increase in the beginning, but the amount in 120 seconds was off and the data of Group 3 started with a negative amount, which went up and down throughout the time intervals. In Graph B1, the data of Group 2 started with a steady increase and slightly declined towards the end although the graph started at a negative number. In the same graph, the data of Group 4 also started negative and declined further, but it increased rapidly in the time intervals of 30-120 seconds and slightly declined at the end. Out of all the groups, the data of Group 2 was the most closest to the expected and the data of Group 4 was the most skewed. Overall, most groups had a line of best fit that began with a steady line that gradually smoothed out into a curve after, which matched the expected graph. Generally, the rate was the highest in the beginning from 0 to 120 seconds because that was when the H2O2 and catalase were first combined and the substrate molecules outnumber the enzyme, allowing the enzyme to collide with substrates more frequently. The rate was lowest towards the end after 120 seconds because that is a while after the hydrogen peroxide began to be decomposed and there is less of the substrate to bind with the enzyme, which means slower rate of reaction. This corresponds to the both graph’s line of best fit, which relatively supports the background information. The rate of enzyme activity on the reaction would decrease with lowered temperature since the lowered average kinetic energy of the molecules decrease the chances of the enzyme colliding and binding with the substrate. Also, the enzyme may be denatured with low enough temperature. The function of catalase is inhibited by sulfuric acid. The sulfuric acid removes the enzyme’s function as a catalyst by transfiguring the protein conformation, which is critical to the binding of the enzyme to its substrate because the specificity is entirely dependent on the structure. Part V – Error Analysis The data from Part 2D did not completely support the background information, which could be explained by errors that was made in the lab. One major error in the data was the negative amount of H2O2 used in the 10 second time interval with exception of Group 1. This may be the result of a human error made in the process of titration. A student may have had trouble controlling the amount of KMnO4 with the burette, unable to record the exact amount at which the color of the mixture changed and adding too much KMnO4. This would have resulted in larger amount of KMnO4 used, thus, leading to a smaller amount of H2O2 used in the solution, which could result in a negative number. Another major error was the up and down fluctuation in the graph drawn from the data of Group 3 and Group 4. This could be due to any measurement error made during the lab, such as the measurement for the sample used in the assay. The directions called for 5mL of the mixture to be titrated; however, students may have measured wrong or mistaken the amount to more or less than 5mL. The assay of more than 5mL would result in a smaller amount of H2O2 used and the assay of less than 5mL would result in a larger amount of H2O2 used, which would account for the incorrect fluctuation of the graphs. Part VI – Conclusions In this lab, I conclude the following: Part 2A: ?Catalase reacts with H2O2 and produced H2O and O2 while boiled catalase does not engage with the substrate. This is shown by the formation of bubbles in the catalase mixture and the absence of bubbles, which indicates absence of oxygen, in the boiled catalase mixture. The function of catalase is affected by temperature because the boiling of the catalase denatured its catalytic ability, thus leading to absence of bubbles in the boiled catalase mixture. Part 2B: ?The amount of H2O2 remaining in the catalyzed reaction is generally less than that in the established baseline due to faster rate in the decomposition. In the data of Group 1, the amount of KmnO4 (proportional to the remaining amount of H 2O2) is 4. 4mL, 4. 2mL, 3. 9mL, 4. 2mL, and 3. 9mL over different time intervals. They are less than or equal to the baseline of 4. 4mL. Part 2D: ?The rate of catalytic reaction changes over time; the rate is constant in the beginning and gradually decreases towards the end, leveling off into a curve from a line. This is best illustrated in the best fit line of Group 2 data in Graph B1. ?The rate is highest when the reaction begins and becomes lower as time passes. The slope of the linear portion of all graphs in the data is greater than the slope of the gradually curving graph with increasing time interval.

Abortion A Medical Procedure - 1213 Words

Abortion is, as defined by Merriam-Webster’s Dictionary, â€Å"a medical procedure used to end a pregnancy and cause the death of the fetus.† A procedure done within the first 9 weeks of pregnancy is done with medicines and the effects are similar to that of a natural miscarriage. This medicine can also be used from 9-20 weeks into pregnancy with heavier doses of the medicine. From 7-15 weeks of pregnancy, a suction termination is performed. This is where they use anesthetic and a suction tube is inserted into the womb and the fetus and surrounding tissue is removed. A late abortion from 20-24 weeks of pregnancy will require an overnight stay at a hospital. There are two options: a surgical two-stage abortion and a medically induced abortion. The first stage of a two-stage abortion will stop the heartbeat of the fetus and the second stage will be performed the next day and will involve removing the fetus and tissue. A medically induced abortion is where they give you a medicine that causes labor-like contractions and the procedure is similar to a late miscarriage. Abortion has been around for as early as 1550 BC. It was done before â€Å"quickening† or when the baby started to move by inserting a plant fiber covered with honey and crushed dates. In 1821, Connecticut put up a law about selling the poison that made abortions happen, but didn’t have a law about the women who took it. The early 1900’s were when most of the states in the U.S. had banned abortion. All 50 states had outlawedShow MoreRelatedIs Abortion A Medical Procedure?966 Words   |  4 Pages Abortion is the name given to a medical procedure, which involves the killing of a foetus, which is a baby. You are one in 250 million sperm cells that made it to the egg to create you surroundings Even at the 6th day you are special, around 2/3rd of embryos fail at this stage, but you made it. You proved that you were healthy enough to be embedded in your mothers lining. By week four your tiny little heart already has a beat. At week four your face has already started to take shape, and at 8Read MoreAbortion Is A Medical Procedure Essay1522 Words   |  7 PagesAbortion is a medical procedure done to terminate a human pregnancy and is performed, generally, within the first 28 weeks of conception (WebMD, n.d.). In America, abortion is a hot button topic for debate. Many laws have been enacted and changed over the years to control who can or cannot have this procedure done throughout the states. Abortion has a vast history, variety of procedures, and some interesting data specific to the state of Arkansas. Even before Roe VS. Wade, women had been terminatingRead MoreAbortion : The Only Medical Procedure1251 Words   |  6 PagesAbortion in Queensland is the only medical procedure that is still considered a criminal offence in the Criminal Code Act 1999 (Qld). 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Abortion alone is very dangerous, therefore there are many risks that the patient must consider before agreeing to it. First the patient must decide to what type of abortion they want to go with because there is medical abortion and there’sRead MoreSelf-Induced Abortion Essay1171 Words   |  5 Pagesgoing to the Hospital to get a proper procedure. Immigrant women, like this one, are deciding to abort their own baby instead of leaving the procedure to medical experts. Many consequences arise when immigrant women used different types of methods to abort their child because the fear of deportation or being shun by their community. Immigrant women should leave the abortion method to medical experts regardless of personal problems that might arise later on. Abortion is defined as the removal of a fetus