Agar Cubes Lab Report Essays

Agar Cubes Lab Report Essays Agar Cubes Lab Report Paper Agar Cubes Lab Report Paper Diffusion in agar cubes Introduction: All cells are dependent on a processes called diffusion, which is the movement of a substance from an area of higher concentration to an area of lower concentration. Cells need to obtain certain essential substances, like oxygen, for their survival. The rate of diffusion is said to be dependent upon the various factors: Size of molecules that have to diffuse, concentration gradient, the distance across which diffusion occurs, number of pores/openings, surface area and concentration. This rate of diffusion is measured by considering the mime taken for changes to physical changes to occur. This experiment consists of using agar mixed with an indicator that changes color when places in a basic solution. It will measure the amount of diffusion that occurs in the agar blocks to determine the effect of cell size on the cells ability to obtain substances by diffusion. Purpose:Determine how surface area and volume relate to one another and how the rate of diffusion varies with the ratio of surface area to volume. In the experiment, we will use the base/acid indicator Phenolphthalein in three efferent sized agar cubes dipped in a sodium hydroxide solution. This will make it possible to measure the depth to which the color has penetrated and will demonstrate the relationship between diffusion and volume. Materials: -agar -scalpel -spoon -two large beakers -ruler -timer -Potassium manganese (Kimono ) -Hydrogen chloride (HCI) Methods: -Make two trays of Agar Gelatin. One pure and one dyed pink. -Use the scalpel to cut three agar cubes of each tray: a CM cube, a CM cube and a LLC cube (total of six cubes). Pour the Potassium manganese (Kimono ) into one of the beakers and Hydrogen chloride (HCI) in the other. Immerse the CM clear cube in the pink Potassium manganese (Kimono ) and the pink agar cube in the clear Hydrogen chloride (HCI). -Set the timer to 10 minutes. -After the 10 minutes, use the spoon to take the cubes out of the beakers and dry them with a paper towel. -Cut both cubes in half with the scalpel. -With the ruler, measure how deep the pink penetrated the clear cube and how much the pink cube absorbed the acid. -Repeat the pro cedure with the smaller bubs, always leaving them in the beaker for 10 minutes. The pink agar cubed immersed in Hydrogen chloride (HCI) had a faster process of diffusion than the clear agar cube immersed in Potassium manganese (Kimono ). Conclusion: The reason cells are so small is because it facilitates the diffusion. As seen in the experiment, diffusion is more efficient when there is a bigger surface area to volume ratio. This process is essential for every cell to bring nutrients and release wastes and it is only possible due to the fact that cells are very small, making the diffusion a lot faster.

Free Essays on Thoreau

In Henry David Thoreau’s Civil Disobedience, Thoreau takes a strong look at the government and the reasons why some government laws should not be followed. In Thoreau’s opening lines he states, â€Å"That government is best which governs not at all;† (4-5). At the time when this essay was written, slavery was not only legal but it was a law that blacks must be owned. Slaves had no rights. They were in America for the sole purpose of working for the white man. Thoreau states, â€Å"if one HONEST man, in this state of Massachusetts, ceasing to hold slaves, were actually to withdraw from this copartnership, and he locked up in the county jail therefor, it would be the abolition of slavery in America,†(341-345). Thoreau is simply asking for people to disobey the laws of slavery in order to free the slaves who are people, who are human, and who should be given the same rights as other human beings. In my opinion, it is this statement that Martin Luther King Jr. took to heart as he fought for equality for all people. Thoreau goes on to speak of a time when he was asked by the State to pay money to the clergy because his father attended church. Thoreau refused to pay, however another person instead paid the money for him. Thoreau stated, â€Å"I did not see why the schoolmaster should be taxed to support the priest, and not the priest the schoolmaster, but I supported myself by voluntary subscription. I did not see why the lyceum should not present its tax bill, and have the State to back its demand, as well as the Church,† (465-470). After that incident, Thoreau made a statement in writing and gave it to the clerk to let the State know that he did not want to be a member of any organization that he had not joined of his own accord. Lastly, Thoreau speaks of a poll tax. Thoreau seemed to question the use of such money and of course he refused to pay the tax. This time his refusal landed him in jail. It is believed that it is this one night in... Free Essays on Thoreau Free Essays on Thoreau Henry David Thoreau begins his poem â€Å"Woof of the Sun, Etheral Gauze† with a description of fog covering the sun. Woof of the sun, ethereal gauze, Woven of Nature's richest stuffs, Visible heat, air-water, and dry sea, Last conquest of the eye†¦// (ll. 1-4) At first glance, the preceding passage offers an ordinary image of the sun hidden behind clouds. Through oxymorons he presents the boundless qualities of the low cloud of fog; the phrases â€Å"visible heat,† air water,† and dry sea† each present a state beyond the physical world free from temporal restrictions. More importantly Thoreau depicts the clouds as â€Å"ethereal gauze,† illustrating the sheerness of the clouds, yet how too the clouds partially conceal the sun from the eye. This special treatment of diaphanous media- fog and smoke- is a unique feature in Thoreau’s poems â€Å"Mist,† â€Å"Fog,† â€Å"The Sluggish Smoke† and â€Å"Light-Winged Icarian Bird.† Thoreau employs these metaphors to represent the semi-obscured realm that connects the physical world from the spiritual realm. For Thoreau, there was no distinction between the physical world and the spiritual world unlike Ralph Waldo Emerson who believes ther e is a division. Images of fog are featured in Thoreau’s poetry to present the bridge between Nature and heaven. The images of smoke serve as a metaphor of the human imagination attempting to reach to connect the two realms. In the poem â€Å"Mist,† one can see Thoreau recognizing and retaining the beauty of the physical world, but also featuring metaphysical attributes to the fog imagery: Low-anchored cloud Newfoundland air, Fountain-head and source of rivers, Dew-cloth, dream drapery, And napkin spread by fays; Drifting meadow of the air, Where bloom the daisied banks and violets, And in whose fenny labyrinth The bittern booms and heron wades; Spirit of lakes and seas and rivers, Bear only perfumes and the scent O... Free Essays on Thoreau As a follower of transcendentalism, Thoreau projected individualism in his literary works, Walden and â€Å"Civil Disobedience.† Thoreau had a deep emphasis on nature, as displayed in his works, as well as his freedom and following conscience. Walden Pond was one of Thoreau’s favorite spots in Concord, Massachusetts. Walden Pond is a symbol for self-exploration; it must answer human nature depth for depth. Even as a very young child, he could stand alone among the trees at Walden Pond and not feel lonely. The people around his small town referred to Thoreau as â€Å"nature’s own child† (Reef 21). Thoreau spent more time outdoors than in the small cabin he built by Walden Pond. Thoreau took long walks in the woods and fields around his town in Concord, Massachusetts. While he was at Walden, Thoreau was alone quite often, but he was rarely lonely. Walden is a book about Thoreau’s experiences while living in the woods beside Walden Pond. Walden is not a long book, but it is filled with wonderful sentences that grab at your mind and stay in your ear (Burleigh 20). This book has helped many people think about and change their lives. Thoreau summed up his reasoning for living by Walden Pond by saying, â€Å"I went to the woods because I wished to live deliberately, to front only the essentials facts of life, and see if I could not learn what it had to teach, and not, when I came to die, discover that I had not lived† (Daugherty 15). Thoreau felt peaceful and at one with nature. He felt deeply about nature; he felt it reached right into your feelings. Yet thoughts (Ring 5). Thoreau felt that â€Å"Natural objects and phenomena are the original symbols or types which express our thoughts and feelings, and yet American scholars, having little or no root in the soil, commonly strive with all their might to confide themselves to the imported symbols alone. All the true growth and experience, the living speech, they would fa... Free Essays on Thoreau In Henry David Thoreau’s Civil Disobedience, Thoreau takes a strong look at the government and the reasons why some government laws should not be followed. In Thoreau’s opening lines he states, â€Å"That government is best which governs not at all;† (4-5). At the time when this essay was written, slavery was not only legal but it was a law that blacks must be owned. Slaves had no rights. They were in America for the sole purpose of working for the white man. Thoreau states, â€Å"if one HONEST man, in this state of Massachusetts, ceasing to hold slaves, were actually to withdraw from this copartnership, and he locked up in the county jail therefor, it would be the abolition of slavery in America,†(341-345). Thoreau is simply asking for people to disobey the laws of slavery in order to free the slaves who are people, who are human, and who should be given the same rights as other human beings. In my opinion, it is this statement that Martin Luther King Jr. took to heart as he fought for equality for all people. Thoreau goes on to speak of a time when he was asked by the State to pay money to the clergy because his father attended church. Thoreau refused to pay, however another person instead paid the money for him. Thoreau stated, â€Å"I did not see why the schoolmaster should be taxed to support the priest, and not the priest the schoolmaster, but I supported myself by voluntary subscription. I did not see why the lyceum should not present its tax bill, and have the State to back its demand, as well as the Church,† (465-470). After that incident, Thoreau made a statement in writing and gave it to the clerk to let the State know that he did not want to be a member of any organization that he had not joined of his own accord. Lastly, Thoreau speaks of a poll tax. Thoreau seemed to question the use of such money and of course he refused to pay the tax. This time his refusal landed him in jail. It is believed that it is this one night in...

Three Summaries for three sections (9.1 - 9.2 - 9.3) Essay

Three Summaries for three sections (9.1 - 9.2 - 9.3) - Essay Example Use of white space is also important, as well as selecting different fonts to highlight different types of information. Additionally, presentation support materials such as slides should be planned carefully. Fourthly, one must think visually. The nature of design projects requires thinking visually. Thus, one should know their purpose and audience, and make an appropriate use of the medium. Finally, writing ethically is paramount. Here, a designer should present designs and other technical results in ways that show what is favourable, as well as what is unfavourable in the design. Additionally, this includes giving full credit to others, such as authors or previous researchers, where it is due. With regard to oral presentations, there are various key needs that must be met. First is knowing the audience. After identifying the type of audience, the presentation can be tailored to hat audience. Second is the presentation outline. This provides a clear structure of the presentation and includes a title slide, an overview of the presentation, a problem statement, background on the problem, objectives, and functions of the design, among other key components. The outline should include both rough and detailed outlines. Thirdly, the team presenting should know the setting in which it will be presenting. This will help them know the types of devices such as slide projectors, are available. Overall, this guides their usage of visual aids. Fourthly, there is need for the team to practice regularly before their presentation in order to gain confidence. Finally, a design overview is key. This is key to helping the team get undivided attention from professionals about their design proj ect. Although this might pose some challenges to the team, it is a constructive and important process to the team. With regard to the final project report, it is

Examine some aspect of Plato's theory of the tripartite soul from Essay

Examine some aspect of Plato's theory of the tripartite soul from Plato's Republic - Essay Example The main objective of this study is to exhaustively tackle this paramount issue by proposing three views: first of all, Plato’s account of the soul would not have committed him to the view that within each part of the soul there are sub-divisions; secondly, the harmony and unity of the soul cannot be achieved by conversation and violence, but only through education. Lastly, by exploring Plato’s education program in The Republic, it is clearly evident that education is the fundamental means of bringing the three parts into harmony and thus makes them one rather than many (8). In the Republic, Plato strongly proposes that the human psyche is divided into three parts mainly appetite, spirit and reason. Through the use of the tripartite soul theory, Plato effectively gives an account on how man can be virtuous. A man who is virtuous is one whose three parts of his soul participate in their appropriate and efficient roles and they are in harmony with each other. It is clear that the paramount concept of order is not only fundamental to the just state but also to the just man. In Plato’s view, the just man cannot be acknowledged without referring to his harmonious and orderly soul. Therefore, the human virtue is dependent on how these psychological elements which are three can harmoniously interact with each other (17). The Tripartite Soul In order to elaborate that people perform each of the three functions with different parts of their soul, Socrates puts forward a principle that â€Å"one and the same thing cannot act or be affected in opposite ways at the same time in the same part of it and in relation to the same object†. This principle is referred to by scholars the Principle of Conflict or Principle of Opposites. In accordance to this principle, it is impossible for something to be at rest and in motion at the same time and in the same part of it. Plato deals with two probable objections to this principle to remove any ambiguities in using it. One is that it is wrong to say that a man, who is standing still and moving his hands, is at rest and in motion simultaneously. Rather, the statement should be that part of the man is standing still and another part of him is moving. The other one is that a spinning top whose circumference is in motion, but whose axis is at rest is moving in one respect but not in another. Plato at this juncture thinks that this noble principle is valid and thus goes on to use it in order to exhibit that there are three parts in the soul (22). Plato states that dissent and assent, aversion and impulse to something are opposite states or actions. Thus, thirst, hunger and appetite desires can be classified as impulses to drink and food. Consequently, man is sometimes unwilling to eat or drink yet he is hungry or thirsty. Thus, according to the Principle of Opposites, there is an element which is different from the one that drives people to crave for food or drink, preventing people from c raving it. The element preventing people from giving way to various unhealthy cravings is reason (39). Additionally to the function of prevention, characterization of reason by Plato is through numerous different ways. Reason is said to be the calculative or reflective element. It is also

Domain Name System Essay Example for Free

Domain Name System Essay From an IT management perspective, setting up a DHCP server would really depend on the size of the company. A DNS server could be recommended in any setting for faster browsing and recognition of sites. If your network is running the same Operating systems and it uses a name resolution method other than DNS, you can continue to use that method without needing DNS. If your network is running different operating systems, or it connects to the Internet, you will want to deploy DNS as the Internet consists of protocols that require DNS. Justifying setting up either server really depends on the admin, but if you think about it managing two computers statically is nothing compared to having to mange twenty computers statically. Having only two computers set up statically on a network will not be very time consuming having to change the setup if something on the network is replaced. Assigning client addresses automatically is by far the easiest option of the two. When setting up a DHCP server and leaving room for growth on the subnet you use, can also save time when installing new computers on the network. It would save the time of manually having to configure any new computers. Not to mention it takes way less time configuring a DHCP server than it would to configure each computer statically. Obviously you would want to pre-allocate IP addresses for fixed hosts such as routers, servers or even printers. These you would set up on the DHCP server as reserved addresses and set them statically on the devices.

Comparing the Impact of Colonization in A Small Place, A Passage to Ind

Impact of British Colonization Exposed in A Small Place, A Passage to India, and Robinson Crusoe British colonialism began in the early fifteen hundreds and even continues today with the British rule of the British Virgin Islands.   For centuries, literature has served as a type of historical documentation of colonization as many authors wrote about colonization from both a colonized and a colonizer's point of view. During colonization, and post-colonization, the physical environment of each colony was changed. Using references to A Small Place, A Passage to India, and Robinson Crusoe, I will provide examples of the physical changes to the colonized societies made by England and discuss the reactions of the colonized people. Jamaica Kincade is quoted as saying "The English loved England so much they built it everywhere they went."   Kincaid writes about the feelings of the colonized society in A Small Place. While she expresses the feeling of the colonized, contrarily, she explains the ideas of the English colonizer. In this excerpt, she is describing Antigua, the place she grew up, and how the British changed it. She begins by explaining the English love England so much, whenever they went they turned it into England. She supports this idea in several ways. First, she gives examples of the street names in Antigua. On a tropical island in the Caribbean Sea, the streets have names such as Rodney, Hood, Hawkins and Drake Street all names of "English maritime criminals". Secondly, Kincaid continues with her description of High Street. This was the street where all of the colonial government buildings were located. The English had built an entire portion of the city that did not exist before their arrival. High Street consiste... ...his journey. For as long as he has ink he will write and after that, he will be forced to leave off (Defoe 72). Defoe did not give Friday much of a voice. However, I can draw an inference that Friday must have liked Crusoe's "English" house or he would not have stayed. We can make comparisons to Crusoe being the Colonizer and Friday was the colonized. Therefore, we can conclude, that the colonized people did like some aspects of the British colonization. In conclusion, "The English loved England so much they built it everywhere." As shown in A Small Place, A Passage to India, and Robinson Crusoe, the effects that the British had on each of their colonies will certainly last a long time. Colonies will embrace schools, libraries, Governmental buildings, banks, airports and even churches that will remain there for generations after the expiration of British rule.

Eng 157 Multicultural Analysis Paper

The Importance of Multicultural Literature ENG/157 David McCarthy The Importance of Multicultural Literature The introduction to multicultural literature into the broad world of differing walks of life, the reader may be surprised by the similarities between the cultures as well as the differences. Cultures are as eclectic as we are as individuals, each with their own quirks, intricacies, and uniqueness that inspires individuality regarding how the vast differences between cultures correlate to our own.Upon deeper examination of multicultural literature, however; we are also given the privilege to walk the path of the individual from whose perspective we are privy to through the written word. As many have wished at one point or another to know and understand what a particular individual is thinking, through reading multicultural literature, the opportunity to have such an experience and glean copious amounts of information. From the subtlest detail to major political agendas to perso nality quirks derived from current or past social standards of that culture.Although differences in points of view can prohibit understanding upon first contact greater exposure to literature from various cultures, one can find relation within themselves. One can empathize and humanize the characters that ultimately open the door to greater understanding of how a culture operates as well as attain the ability to relate those experiences to one’s own. To understand multicultural literature, one must first try to understand the cultural background of the author where he or she lives, what time, what their secular views are in a particular subject as well as their passions and influences.For instance, Ngugi Wa Thiong’o’, author of the short story ‘The Return’ is heavily influenced by his negativity toward British colonialism in Africa. The â€Å"The Complete Review† (2010-2012) website had a list of the pros and cons of the author’s writi ng stating that he has a â€Å"Powerful anti-colonial voice, a strong stylist, a significant novelist, playwright, and public intellectual. † It also went on to say that â€Å"Angry Marxist politics creep a bit far into some of his work and older works can feel somewhat dated. † Kamau, the main character in this particular ork of Thiong’o’s, depicts what the people ultimately have suffered because of the colonial regime within Africa. The character represents not only what the people of Africa forced to suffer but also hope that the effect of what transpired can be overcome through perseverance despite devastation endured. The author, Ken Saro-Wiwa, also politically motivated which is a characteristic prominent within his short story â€Å"Africa Kills Her Sun†. Having sided with the minority Ogoni within his homeland of Nigeria, his protests and resistance against the dictatorship of General Sani Abacha led to his imminent execution.Within this pa rticular short story, though, he wrote the character Bana as one who sees his acts of criminality no different from that of those in more prestigious standing. This ultimately leads the reader to question how criminal activity, such as robbery is any different from that of the sly, underhanded actions of a politician or any other individual in a position of power. Readers also develop an emotional attachment to a character, such as the main character in Chitra Divakaruni’s â€Å"Mrs. Dutta Writes a Letter†.From the direct perspective of the character, the reader looks through the eyes of an elderly widow from India who struggles to find balance between her ingrained traditions and customs from her native homeland to the vastly different culture of America. Mrs. Dutta struggles with her understanding of technology, culinary preferences, distinctively different parenting styles, and proper decorum regarding personal space. She finds herself lost within a struggle between wanting the companionship of her son and grandchildren and her yearning to return to the familiarity of home.Upon closer examination of this piece, the reader can identify with the character and the feeling of misplacement in foreign surroundings. This story also illustrates the struggle with diversity within The United States. As Mrs. Dutta’s son and his family try to maintain assimilation-disregarding their heritage and customs to avoid stereotyping, Mrs. Dutta reminds them of where they originate. The integration of cultures within The United States is predominantly why the United States viewed as the â€Å"Land of Opportunity†. Despite the years of being classified as ‘The Melting Pot†, diversity remains a struggle for many immigrants.This story is a prime example of the internal conflict between heritage and assimilation as well as the strength of familial bonds. The history of a culture is of huge importance within multicultural literature. The attac k on 9/11 within the United States is an event that had both shattered the United States as well as assist in the formation of the future history of the United States. Pride and patriotism after that particular event blossomed along with a heavy rift regarding diversity, especially those of the Islamic faith.Remembering such a tragic event honors those who have lived through it as well as lights a mental candle for those who did not. History is as important in other cultures as well. Understanding and appreciating facts as well as religious mythology, such as the Native American mythology described within Margaret Lawrence’s â€Å"The Loons†. The loons within this story represent a mythological representation of an omen of death in some Native American cultures. The character, Piquette, after staggering through life with two separate identities-Cree and French-ultimately succumbs to this omen.Much like the yellow ribbon represents the soldiers fighting to maintain our freedom battling terrorists and risking their lives, the loons in this story represent the battle between two different cultural backgrounds fighting against each other in a metaphorical sense. If a culture denies its history, the culture is denied its identity. History weaved within the yarns of multicultural literature shine a light upon the dusty background that assisted in the formation of the culture, therefore breaking down the barriers of the misunderstanding of ethics, principles, traditions, and mindset.Much like the dissemination of the history and politics of different cultures, multicultural literature also deepens the understanding of perspective, education, and view on controversial topics such as in Ha Jin’s â€Å"The Bridegroom†. The â€Å"Barnes & Noble† (1997-2012) website included an editorial review upon the short story stating that â€Å"The title story is perhaps the most telling indication of the clash of humanitarian feeling and bureaucr atic intervention.The protagonist, who has been taught to believe that â€Å"homosexuality originated in Western capitalism and bourgeois lifestyle,† is unable to credit his own sympathy for his son-in-law, who is sent to a mental hospital to cure his â€Å"disease. † Ha Jin has a rare empathy for people striving to balance the past and the future although caught on the cusp of change. (Oct. ) Copyright 2000 Cahners Business Information. |† (Editorial Reviews). The story, set in China illustrates the ignorance of homosexuality. Considering the different sects within theUnited States and from other various countries and religious backgrounds that do not understand nor accept homosexuality, this story showcases how relative that misunderstanding can be. Although The United States has erred to the side of acceptance on this particular lifestyle, there are certain groups that due to the ignorance and neglect of education refuse to accept it. Aside from the topic of h omosexuality within the piece and the misinformation regarding that particular lifestyle, the story also initiates the question of what marriage in point of fact entails.With homosexuals fighting for the right to marry within the United States being the most controversial topic, the question that arises after reading â€Å"The Bridegroom†, is whether or not unwavering loyalty without sexual attraction predetermines a solid marriage. Beina, the main female character within the piece remains loyal to her homosexual husband despite his or her lack of physical intimacy instead based the relationship upon respect and companionship.Reading multicultural literature not only strengthens the bond between individuals, it also strengthens the bonds of diversity. Diversity allows individuals to learn and expand knowledge. It increases the amount of respect through first person narratives, memoirs, and the ideals within fiction. Contrary to popular belief, fiction does instill fact in a c omprehensive manner where the reader can walk for a short time in another individual’s footsteps, trace out the character’s heritage, and take a glimpse inside the mind of an individual from a foreign land.A writer puts themselves into their work and the readers having taken the time to examine the stories can see the particular voice of the writer to understand and appreciate the author as well as the characters. References The Complete Review. (2010-2012). Retrieved from http://www. complete-review. com/authors/ngugi. htm Barnes & Noble. (1997-2012). Retrieved from http://www. barnesandnoble. com/w/bridegroom-ha-jin/1102808435