The enzyme potato catalase Essay Example for Free

The enzyme potato catalase Essay Analysis Instead of filtering out poor data for my results I have decided to select the best result to concentrate on. I removed quite a few results. The reasons for removing results was either because of missing data, anomalous data (not following the trend of others that I believed to be correct), and unusual entries such as amount of oxygen collected decreasing as the experiment went on. This most likely was because of inaccurate readings as other explanations, such as the oxygen dissolving in the water, are unlikely. These are the result I have chosen: The effect of hydrogen peroxide (substrate) concentration upon the rate of oxygen production in the presence of Catalase Concentration of Hydrogen Peroxide (vol) Volume of gas collected in inverted measuring cylinder at end of each successive minute (cm3) over a period of 4 minutes Student InitialsThis is an example of one of the results I did not include: From my selected results I also split them into the 4 different concentrations of hydrogen peroxide tested for ease of use which went as follows:5cm2 10cm2 1 Minute 2 Minutes 3 Minutes 4 Minutes 1 Minutes 2 Minutes 3 Minutes 4 Minutes Minutes 2 Minutes 3 Minutes 4 Minutes 1 Minutes 2 Minutes 3 Minutes 4 Minutes 1I did not include this as some information is missing, possible implying that the way in which the experiment was performed was faulty. This could lead me to a false conclusion. This is another example of the type of results I did not include:   As you can see the amount of oxygen collected has decreased throughout the experiment, this is very unusual, and likely suggests that the readings were incorrectly read, for this reason I do not want inaccurate data to lead me to a poor conclusion. Read more: Essay on  Potato Catalase After that I found the standard deviation of all my results to further check there were no anomalous data, these are my findings: CONCENTRATION 5cm2 Entry/Minute Sum of Standard Deviation   Standard Deviation0CONCENTRATION 10cm2 Entry/Minute Sum of Standard Deviation CONCENTRATION 20cm2 Entry/Minute Sum of Standard Deviation 7. 26 5. 98 7. 45 8. 72 Standard Deviation   Although there are a few entries with high deviation (for example entry number 6 on the 5cm2 concentration table) all his/her results are consistently off the standard deviation, this suggests that there is nothing wrong with their collection of data, so there for I decided to leave them in. After selecting my results, I have taken the mean of the selecting results, it is as follows: Concentration/Time This graph shows that as the concentration of hydrogen peroxide increases so does the amount of oxygen produced. It increases at roughly the same rate throughout the reaction and the amount of oxygen produced is generally a higher amount with a higher concentration. This half matchs with my hypothesis, I predicted that the reaction would start to slow down after the initial reaction had occurred, this does not however seem to be the case. However, the initial rate of reaction is a lot higher The possible reasons for this could be that the reaction did not have enough time to start to level off or slow down as there was still a lot of substrate left over and the reaction could still be performed at maximum rate, if this was the case it would not start to slow down until there was significantly less substrate available, obviously this has not been the case. These results do match my hypothesis in that I said as concentration increased, so would the amount of oxygen produced and the rate of reaction would generally be greater. Here is a graph to show the initial rate of reaction for different concentrations of hydrogen peroxide As you can see, as the concentration increases, so does the initial rate of reaction, this is because a greater amount of hydrogen peroxide is available, which means more substrate molecules come in contact with the enzymes (and thus their active site) and can be separated into their products, this is explained simply by collision theory in the introduction. The reason that later on in the reaction the rate of the reaction may be different is because there is likely to be less substrate left over as the reactions occurring would have separated them into their products, hence the reaction rate would not be going as fast. Appendix Mean Added up all the entries, then divided them by the number of entries there were. E. g. The mean for   Would be (1. 1+1. 3+1. 2+1. 4)/4 which equals 1. 25 Standard Deviation For the single entries: (Entry-(mean of all results in that concentration and minute))to the power of 2 For the total standard deviation: Square root of (Sum of all single standard deviations/number of entries 1). Bibliography Biology 1 (Cambridge Advanced Sciences) Internet URLs: http://www. clunet. edu/BioDev/omm/catalase/frames/cattx. htm http://www. beyondtechnology. com/tips016. shtml The above preview is unformatted text This student written piece of work is one of many that can be found in our GCSE Patterns of Behaviour section.

A Feminist Reading of the Tempest Essay -- Literary Analysis, Shakespe

William Shakespeare’s The Tempest provides dialogue that portrays the social expectations and stereotypes imposed upon women in Elizabethan times. Even though the play has only one primary female character, Miranda, the play also includes another women; Sycorax, although she does not play as large a roll. During many scenes, the play illustrates the characteristics that represent the ideal woman within Elizabethan society. These characteristics support the fact that men considered women as a mere object that they had the luxury of owning and were nowhere near equal to them. Feminists can interpret the play as a depiction of the sexist treatment of women and would disagree with many of the characteristics and expectations that make Miranda the ideal woman. From this perspective, The Tempest can be used to objectify the common expectations and treatment of women within the 16th and 17th Centuries and compare and contrast to those of today. This play portrays the women as fragile and pathetic beings. When Miranda is speaking to Ferdinand she is allowing him to see her as quite vulnerable, which will allow him to view here exactly as that.â€Å"At mind unworthiness, that dare not offer/What I desire to give, and much less take†(3.2.77-78). She goes on to say, â€Å"If not, I’ll die your maid. To be your fellow/You may deny me, but I’ll be your servant/Whether you will or no†(3.2.83-86). This play is portraying Miranda as a pathetic woman who would rather be a servant to a man that won’t marry her; she would rather be his maid than live without him. Miranda’s character in the play represents the ideal woman of Elizabethan era. She is portrayed as a goddess among the men. â€Å"Most sure, the goddess/Oh whom these airs attend!†(1.2.425-426). Fer... ...n her mind is more important than his words. It is an example of the patriarchal society that they live in; although he is her father and has the parental power over her he would most likely not speak to a son in such a demeaning tone. He makes her seem to be slow, as if she cannot carry on a conversation or listen to him, which is quite demeaning. The Tempest portrays women as beings that accept the ideal role that they are expected to take on by the request of the men. The way Miranda is portrayed; as a goddess, maid, or virgin, is what she makes herself to be. The play does not give women the voice that they deserve, it makes them out to be prized possessions for men to brag about and share. From a feminist prospective, The Tempest portrays an Elizabethan society that doesn’t give women a voice, but rather ways on how to be the ideal woman for men to possess. A Feminist Reading of the Tempest Essay -- Literary Analysis, Shakespe William Shakespeare’s The Tempest provides dialogue that portrays the social expectations and stereotypes imposed upon women in Elizabethan times. Even though the play has only one primary female character, Miranda, the play also includes another women; Sycorax, although she does not play as large a roll. During many scenes, the play illustrates the characteristics that represent the ideal woman within Elizabethan society. These characteristics support the fact that men considered women as a mere object that they had the luxury of owning and were nowhere near equal to them. Feminists can interpret the play as a depiction of the sexist treatment of women and would disagree with many of the characteristics and expectations that make Miranda the ideal woman. From this perspective, The Tempest can be used to objectify the common expectations and treatment of women within the 16th and 17th Centuries and compare and contrast to those of today. This play portrays the women as fragile and pathetic beings. When Miranda is speaking to Ferdinand she is allowing him to see her as quite vulnerable, which will allow him to view here exactly as that.â€Å"At mind unworthiness, that dare not offer/What I desire to give, and much less take†(3.2.77-78). She goes on to say, â€Å"If not, I’ll die your maid. To be your fellow/You may deny me, but I’ll be your servant/Whether you will or no†(3.2.83-86). This play is portraying Miranda as a pathetic woman who would rather be a servant to a man that won’t marry her; she would rather be his maid than live without him. Miranda’s character in the play represents the ideal woman of Elizabethan era. She is portrayed as a goddess among the men. â€Å"Most sure, the goddess/Oh whom these airs attend!†(1.2.425-426). Fer... ...n her mind is more important than his words. It is an example of the patriarchal society that they live in; although he is her father and has the parental power over her he would most likely not speak to a son in such a demeaning tone. He makes her seem to be slow, as if she cannot carry on a conversation or listen to him, which is quite demeaning. The Tempest portrays women as beings that accept the ideal role that they are expected to take on by the request of the men. The way Miranda is portrayed; as a goddess, maid, or virgin, is what she makes herself to be. The play does not give women the voice that they deserve, it makes them out to be prized possessions for men to brag about and share. From a feminist prospective, The Tempest portrays an Elizabethan society that doesn’t give women a voice, but rather ways on how to be the ideal woman for men to possess.

16th Century rebellions of the Netherlands Essay

Yet the Church still held the power to imprison, fine and even maim those who insulted the clergy. People deeply resented this and the Church’s extensive wealth, which many felt was undeserved. Not all the clergy behaved in this manner, but enough to disillusion many to the point where they abandoned the Church. The weakness of the Catholic Church was extremely important in the spread of Calvinism. Had people been entirely content with Catholicism, the Huguenots and other Calvinist influences would never have had such an impact. Once the country’s Calvinists had been converted, they were able to avoid detection and punishment successfully. The flourishing community of Jewish marranos based in Antwerp were able to advise them on such matters, as they themselves had experience of religious persecution. Their advice was warmly and freely given, as the marranos looked favourably upon any opponent of Catholicism. The country’s boggy marshlands also provided retreats for Calvinists that the authorities found difficult to uncover. However, many figures of authority did support the Calvinists. Gentry such as the Marnix brothers failed to implement Philip’s heresy laws and implicitly offered protection for Calvinists within their communities. – and – openly welcomed Calvinism, but these were exceptions. If Calvinists were facing persecution by authorities unsympathetic to their religion, then it was a simple process to simply escape to a more Calvinist-friendly province. As every state enforced its own laws, a punishment delivered in one state could be entirely disregarded in another. The refusal of the magistrates to prosecute Calvinists from the early 1560’s allowed the Huguenots to trigger the Revolt. The protection that Calvinists received from these magistrates, the marranos, the gentry and the geographical landscape all allowed the religion to largely avoid suppression by the authorities and continue to spread across the Netherlands. Another reason why the Netherlanders felt able to revolt in 1566 is that Calvinism advocates rebellion against a ruler if he upholds an alternative faith or rules unjustly. The Calvinists in the Netherlands regarded Charles V as guilty of both charges, and therefore felt supported by God in their revolt. Had the rebels been Lutheran or Anabaptist, some may have been uncomfortable with the idea of violent rebellion to achieve their religious aims. Yet as Calvinists, such rebellion was justified by God’s support. For those with no genuine Calvinist beliefs but a desire to revolt, this justification was convenient and led them to readily adopt the religion. However, the rebels were not motivated by purely religious concerns. Short-term economic hardship exacerbated their disillusionment with Philip, and bred such discontent with the ruler and their daily conditions that they longed to vent their anger in some way or other. The Iconoclast Fury was the easiest form for this anger to take, as the public’s religious and economic grievances blurred. The first economic difficulties occurred in 1563. Annoyed by increases in English duty rates and harassment by English customs officials, Philip imposed a temporary ban on the import of certain goods from England. The country responded by transferring all its wool and cloth exports to Germany, leaving thousands of Flemish textile workers unemployed. In the same year, the Baltic states became engaged in a war and subsequently sealed themselves off from the rest of Europe. This worsened the already severe unemployment in the Netherlands, since many relied upon work either with the raw materials produced in the Baltic or on the 2000 or so ships which sailed between the Baltic States and the Netherlands every year. This unemployment made it difficult for people to afford food, a problem severely exacerbated by the lack of grain imports from the Baltic- the Netherlands were reliant upon these to provide 15% of its national intake. Appalling weather ruined the 1565 harvest and made bread even scarcer and more expensive At Diksmuide in Flanders a hoet of wheat escalated from 150 groats in March to 440 groats by December. This price rise affected the nobility as well as the middle and lower classes. Shortly before the outbreak of rebellion, a government minister in Brussels noted that discontent with the economic situation was becoming synonymous with religious discontent: ‘The shortage of grain grows worse every day†¦ If the people rise up, I fear that the religious issue will become involved’. CONC -Compromise important because provided focus for public discontent -Segovia Woods equally important because compromise wouldn’t have happened without -All the reasons for bad relations between grandees and Phil equally important because SW wouldn’t have been written otherwise. Decide between. -Grievances of masses most important, because while revolt might have occurred anyway without nobility, could not possibly have occurred without the manpower that the middle and lower classes provided. Of these, Calv and economic difficulties equally weighted in importance. The Revolt occurred because opposition to Philip’s heresy laws existed among every class. The grandees’ discontent alone would have been powerless to effect an uprising had serious discontent not existed among the middle and lower classes. The nobility played an important part in the outbreak of the Revolt by providing the trigger, but the middle and lower classes were essential to its outbreak by providing the manpower necessary to carry out the Iconoclast Fury. The reasons for their discontent are thus reasons for the outbreak of the First Revolt. NEW CONC: Triggers impt, esp Huguenots as masses crucial to revolt, unlike nobles Neither trigger entirely essential. Eco difficulties had bred such discontent and Calv had spread so widely that ppl bound to revolt some time or other. Both equally essential- eco blackened mood, while fact that ppl Calvinist made them keen to rebel against laws threatening them (specifically) The grandees’ challenge to Philip’s authority in their 1564 was very important, perhaps even crucial, to the outbreak of revolt amongst the nobility. Had this challenge not been made, it is unlikely that the nobility would ever have felt safe or supported enough to form the antagonistic Compromise. However, revolt would still have occurred among the masses without this trigger. The influx of Huguenots into the Netherlands combined with the magistrates’ willingness to tolerate their openly ‘heretical’ preaching really triggered revolt among the ordinary people of the Netherlands. It is therefore the more important of the two triggers, because while the revolt could have occurred without the nobility, it could not possibly have occurred without the manpower that the middle and lower classes provided. Yet neither trigger was completely essential to the outbreak of mass revolt in the Netherlands in the 1560’s. Economic hardship had bred such discontent and Calvinism had spread so widely that people were bound to revolt at some time or other in protest at their conditions and in defence of their religion. These two essential motivations are fairly equal in their contribution to the First Revolt. The triggers merely provided a focus for their discontent.

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