Biology lab report of osmosis Sample

Biology lab report of osmosis Paper A big fresh potato was taken and only cylinders from that potato were obtained. Mass and dimensions of the cylinders A single cork borer was used to cut out cylinders that were then cut to lengths of mm and egg. Type of solution used All of the cylinders were immersed in solutions of sucrose and distilled water. Volume of solution All the cylinders were immersed in beakers containing ml of the sucrose solution. Time of immersion The cylinders were immersed in the solutions for our for osmosis to take place with considerable change in length. Temperature of the osmosis setup The water was taken from the same source and the entire experiment was conducted at room temperature (25 C). PH of the solution Using a pH meter the pH of all the solutions should be determined and it will be approximately neutral since only distilled water and sucrose powder in different concentration have been used PROCEDURE: Take 24 mall beakers and divide them into 3 sets. In each set, name each of the 8 beakers with numbers 20, 25, 30, 35, 40, 45, 50 and 55. These beaker numbers will indicate the concentration of the sucrose solution they will contain. In each beaker add ml of distilled water. Weigh the masses of sucrose powder on the digital balance and mix them to beakers in each set filled with water according to the table shown below- volume of distilled water in CM mass of sucrose in (Â ±O. 01)g concentration of solution in g dim-3 40. 0 0. 80 20 40. 0 1. 00 25 40. 0 1. 20 30 40. 0 1. 40 35 40. 0 1. 60 40 40. 0 1. 80 45 40. 0 2. 00 50 40. 0 2. 20 55 Using a stirrer, stir the solutions until the sucrose powder gets completely dissolved forming clear solutions. Now wash the potato in tap water and using a ark borer cut of cylinders of length CM from the potato. We will write a custom essay sample on Biology lab report of osmosis specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Biology lab report of osmosis specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Biology lab report of osmosis specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Now place the potato cylinders next to ruler and cut the cylinders to mm. Weigh each one of them to make sure that they are of the same mass (egg was the mass in this experiment). Drop one cylinder into each of the 24 beakers containing the sucrose solutions. Leave the cylinders in the solution for 5 hours and then pick them up from the solution. Now measure the length of each cylinder using a measuring ruler in mm.

Free Essays on Chronical Of A Death Foretold

"Why Women are very important in the novels The House of the Spirits and A Chronicle of a death foretold† Throughout history man was, and still sometimes is, thought to be the stronger sex, both physically and emotionally, because men seem to be the decision makers and seem to be doing everything by themselves. But behind what everyone sees, the women are usually the ones that are behind the scenes and in control. Both â€Å"a Chronicle of a death foretold† and â€Å"The House of the Spirits† have men as their most apparent decision makers and noticeable main characters, but behind the scenes women affect and influence the men greatly. Each of these women represents a different person and each has a different way of influencing the men that they are with. Angela Vicario from â€Å"A Chronicle of a Death Foretold†, and Clara Trueba from â€Å"The House of the Spirits† are the very important women in their respective novels and therefore the most influential women in their novels. I think that the reason the authors of these novels chose to put women as their strongest characters is because where these authors came from, Chile, family is very important in their culture. Since in most family the mother is the most important figure, they are the people that hold the family together, the authors wanted to show that to everyone in their novels. Clara has a tremendous influence over Esteban through her mysterious and mystical ways. She is such a mysterious person, which attracts Esteban to her and what little he knows and understands about her, and at the same time tells him to keep his distance until she allows him to approach her, like the time she left Tres Marias two days after he hit her and he did not try to stop her1. This shows Clara's indifferent attitude towards Esteban's feelings and establishes that Clara does not need Esteban as much as he needs her. Clara from then on seemed to control most of Esteban's thoughts, lifestyle a... Free Essays on Chronical Of A Death Foretold Free Essays on Chronical Of A Death Foretold "Why Women are very important in the novels The House of the Spirits and A Chronicle of a death foretold† Throughout history man was, and still sometimes is, thought to be the stronger sex, both physically and emotionally, because men seem to be the decision makers and seem to be doing everything by themselves. But behind what everyone sees, the women are usually the ones that are behind the scenes and in control. Both â€Å"a Chronicle of a death foretold† and â€Å"The House of the Spirits† have men as their most apparent decision makers and noticeable main characters, but behind the scenes women affect and influence the men greatly. Each of these women represents a different person and each has a different way of influencing the men that they are with. Angela Vicario from â€Å"A Chronicle of a Death Foretold†, and Clara Trueba from â€Å"The House of the Spirits† are the very important women in their respective novels and therefore the most influential women in their novels. I think that the reason the authors of these novels chose to put women as their strongest characters is because where these authors came from, Chile, family is very important in their culture. Since in most family the mother is the most important figure, they are the people that hold the family together, the authors wanted to show that to everyone in their novels. Clara has a tremendous influence over Esteban through her mysterious and mystical ways. She is such a mysterious person, which attracts Esteban to her and what little he knows and understands about her, and at the same time tells him to keep his distance until she allows him to approach her, like the time she left Tres Marias two days after he hit her and he did not try to stop her1. This shows Clara's indifferent attitude towards Esteban's feelings and establishes that Clara does not need Esteban as much as he needs her. Clara from then on seemed to control most of Esteban's thoughts, lifestyle a...

Entrepreneurial characteristics Essay Example | Topics and Well Written Essays - 1250 words - 1

Entrepreneurial characteristics - Essay Example Entrepreneurial characteristics By exploring the characteristics and skills of entrepreneurs, I have a better understanding of what characteristics an entrepreneur should possess. He does not have to be a risk taker but must have confidence in himself and have good leadership qualities. To do this, he/she needs to have a vision, marketing skills, good communication skills, financial skills, good time management skills, administrative skills and also leadership skills. The type of entrepreneur depends on the kind of characteristics, behavior or attributes that he/she possesses. These attributes play a great role in determining the kind of skills possessed by the entrepreneur. For example, a person who is self-confident, persuasive, a good listener, inspirational has the marketing skills required to sell the business and its products. There are various theories that try to explain the personality of individuals or entrepreneurs such as the leadership theories, self-efficiency theory, effectuation theory, behavioral and communication theories among others. The paper will discuss these theories in trying to explain the entrepreneurial characteristics and also the extent to which these characteristics are found within the range of skills that they should possess. The sel f-efficacy theory advanced by Albert Bandura is based on the belief in oneself. Robbins and Judge (2010) interpret self-efficacy as the belief that one has the capability to organize and execute courses of action that are required to achieve specified goals. Individuals have different perceptions of themselves; some high expectations of achieving a certain objective while others do not believe in themselves hence they fear to initiate anything rest they fail. Self-efficacy thus determines how the entrepreneur pursues goals, tasks and challenges (62). A successful entrepreneur should have self-confidence so as to be able to set and achieve goals and also to get other people to believe in what he/she is doing. The self-efficacy theory is also based on experience. Most people observe entrepreneurs starting up businesses and either succeeding or failing. Depending on what one observes, his perception may change. For example, if one has experience of observing someone start up a business and fail, he may fear engaging in such a venture. People with high self-efficacy have the drive and motivation to attain certain goals and continue even if the business is not prospering since they believe they can make it. On the other hand, those with low efficacy do not have the motivation to start a business but Robbins and Judge (2010) argue that this is needed to allow an entrepreneur to learn more about the business before venturing into it. The effectuation theory advanced by Saras Sarasvanthy is based on the belief that there exists a market which an entrepreneur should discover. The entrepreneur in this case has the knowledge, skills, and the resources needed to start a business but the question is, is he/she ready to take risks? An entrepreneur should therefore be able to take risks since he is venturing into a business with an unpredictable future. Instead of calculating the returns from the business undertaking, the individual can venture in any business and shape its destiny (Sarasvanthy, 2008). Contrary to self-efficacy theory, one is not influenced by observing others but takes own initiative into the unknown. The entrepreneur in this case possesses such characteristics as risk taker, creative, good in grasping opportunities, decisive, likes learning by doing, and is a team builder since his work involves building