Tuesday, December 3, 2019

Take Home Assignment - Biology Cell Analysis free essay sample

Size, Structure and Microscopy Introduction What is life? What are the key factors that biologists have defined that apply to every single organism on the planet? In the 17th century, due to the amazing advancement of the microscope, biologists created a theory to differentiate the living from the non-living called the cell theory. One concept from the theory is that all living organisms are composed of one or more cells. The importance of studying cells is akin to the importance of studying life. By being able to observe and experiment will cells, we are further able to understand their function in the environment, in organisms as well as in ourselves. It is the most fundamental unit of life and is responsible for all functions within an organism. There are many different kinds of cells, which pertain to certain life forms on earth carrying out certain specific functions. Cells can be separated into two categories prokaryotes and eukaryotes. We will write a custom essay sample on Take Home Assignment Biology Cell Analysis or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Prokaryotes are typically found in unicellular organisms. They do not have a nucleus or nucleus bound organelles. Therefore their DNA, proteins, ribosomes and etc. are enclosed within the cell membrane, without any specific location. They reproduce by the process of binary fission. The two domains of organisms that contain these cells are bacteria and archae. Archae is a unicellular organism that grows in extreme environmental conditions, it is theorized to be the first organisms on the planet. Bacteria are the largest kingdoms of organisms in the world. They grow in several habitats (in soil, in water, in the Earth’s crust, etc. ). The second kind of cell is the eukaryotic cell. These cells contain a nucleus as well as nucleus bond organelles (for example; Golgi apparatus, mitochondria, chloroplasts, etc. ). Eukaryotes cells exists in four kingdoms; fungi, protists, animals and plants. Funguses are decomposers and are vital for cycling nutrients in the environment. Animals and plants differ in cell structure and function. Animal cells have different organelles (for example; lyzsomes) and an irregular shape. Plant cells also have different organelles (for example; vacuoles and chloroplasts) and rigid cell walls creating a distinct shape. Lastly there is a prosista kingdom, usually containing single cell organisms, which do not have all the characteristics to fit in any other kingdoms. In this experiment, these types of cells were observed and analyzed. The cells observed in this lab were elodea canadensis (eukaryotic, plant), eptiheial, (eukaryotic, animal), paramecium aurelia (eukaryotic, protist), euglena gracilis (eukaryotic, protist), saccharomyces cerevisiae (eukaryotic, fungi) and staphylococcus aureus (prokaryotic, bacteria). Each cell was examined under a microscope in order to observe certain organelles and movements, which would not be possible to view with the naked eye. Under the 40 magnification, elodea canadensis’ (marine plant) has observable chloroplasts and rigid cell wall structures. Elodea canadensis also has a unique function that can be observed under a microscope called cytoplasmic streaming; this is the flow of the cytoplasm around inner lining of the cellular membrane. Epithelial cells, also known as human cheek cells, have observable organelles. Under the 40 magnification, the irregular shaped cell membrane as well as the nucleus was distinguishable. Paramecium Aurelia (protista found in ponds and swamps) have ciliates that are visible at the 40 magnification. They have the appearance of thin, short hairs that surround the cell membrane (embedded in the pellicle). Its function is to help the motility of this unicellular structure, which observed can be described as pushing the cell forward as the hairs pull back. Euglena gracilis (protista found in ponds and swamps) under a magnification of 40 has an observable flagellum. This long thin protein structure at the end of the cell does a propeller motion, allowing the cell to be mobile. Saccharomyces cerevisiae (yeast cell) under the 100 magnification appeared as large round cells. Their cell walls, cytoplasm and nucleus are visible. Staphylococcus aureus (found on animal skin or mucosal surfaces) are difficult to find due to their small size, although they are distinguishable at 100 magnification. They shake and quiver spastically as well as randomly. The purpose of this experiment is to observe cells through the use of a microscope and further be able to determine differences and similarities between these cells. By observing cells, the opportunity exists to analyze organelles and thus determine their function. At the end of the experiment, it should be possible to confirm through observation the difference between eukaryotic, prokaryotic, plant and animals cells as well as specific functions and mobility traits of certain cells. Discussion The 6 cells analyzed in this experiment were elodea canadensis (eukaryotic, plant), eptiheial, (eukaryotic, animal) paramecium aurelia (eukaryotic, protist), euglena gracilis (eukaryotic, protist), saccharomyces cerevisiae (eukaryotic, fungi) and staphylococcus aureus (prokaryotic, bacteria). All of these cells were observed with the Olympus Model CX31RBSFA microscope. The outcomes of this experiment are to confirm the details of certain organelles, mobility patterns and other specific cellular processes. Firstly, the cell elodea Canadensis was analyzed. The qualitative qualities observed were light green rectangular cells joined in a stack formation, bonded together by their cell walls. Inside the cell were several dark green dots, which were the chloroplasts that are unevenly distributed within the cytoplasm. At the 40 magnifications, chloroplasts were measured as 3. 2 um (4. 3 um, refer to table 1 group average) and cell length as 89 um (85. 8 um, refer to table 1 group average). Elodea being a plant cell has a particularly unique and interesting cell membrane structure. The cell walls provide shape due to their rigidity, allowing the organelles inside to form and grow. Also, forming a connection between adjacent cells creating strong intercellular communication pathways. Chloroplasts, the green dots observed on the microscope, contain chlorophyll that provides the green colour of the cell. They are also the sites where photosynthesis occurs; this is how plant cells get their energy. After observing the elodea for five minutes, cytoplasmic streaming began to take place. Cytoplasmic streaming is the movement of organelles and nutrients within the cell. Under the microscope, cytoplasmic streaming was evident when the chloroplasts moved in the same direction along the inside of the cell membrane. The epithelial cell observed under the 40 magnification has observable cellular characteristics. The cellular shape was round, but particularly irregular. A cellular membrane was visible as well as the cell’s nucleus. The cell measured was 21. 6 um (25. 8 um, refer to table 1 group average) and the nucleus was measured 1. 4 um (1. 7 um, refer to table 1 group average). The cellular membrane encloses organelles within the cell, as well as being a communication site for proteins, nutrients and watering flowing in and out of the cell. The nucleus controls all of the cell’s functions and contains all of the genetic material. The paramecium aurelia under observation of 40 magnification displayed a green-gray colour with a long lean shape. The cytoplasm contains several dark green-grey granules, with a nucleus located at the widest part of the cell near the pellicle. The exterior of the cellular membrane appeared to be fuzzy, as it contains small hair like follicles called cilia embedded within the pellicle. The length measured of the cell was 85 um (98. 2 um, refer to table 1 group average). The cilia microscopic hair like functions act as oars for the cells, moving in an uniform motion and rhyme to allow the cell to move easily in water, tissues and etc. The euglena gracili under the 40 magnification had a distinguishable bright green colour and a long cylindrical shape. The cell contained several chloroplasts, a nucleus in the center as well as a dark red photoreceptor located at the far end of the cell containing the flagellum embedded in the pellicle. The length of the cell was measured 51 um (47. 6 um, refer to table 1 group average). Flagellum is a long thin tail like structure that propels in a circular motion, causing the cell to move in a non-uniform and jerky fashion. This movement always it to travel in water finding nutrients and prey, since it is autotrophic and heterotrophic. The saccharomyces cerevisiae (yeast) and staphylococcus aureus (bacteria) were observed at 100 magnification on the same sample slide. The yeast was distinguishably different from the bacteria! The yeast was much larger circular (oblong) shape with a translucent cellular structure, which contained a large nucleus in the center with a vacuole surrounding it.

Wednesday, November 27, 2019

Tips Writing a Research Paper on Bullying

Tips Writing a Research Paper on Bullying Tips: Writing a Research Paper on Bullying Freshmen and students in their first year in high school often fall prey to bullies. Reports obtained from educational institutions indicate that bullying persists even in the modern era. It is not known why people bully others, but it can be concluded that a bully is likely to have an underlying psychological condition that triggers the bullying behavior. On a different perspective, bullying is not only rampant in schools, but has also been reported in family settings. This is mainly witnessed in families where the income is so meager that it cannot support the children that comprise that family. Bullying in families takes a mild form. For example, the eldest sibling taking care of the younger ones might serve himself bigger food portions, leaving the rest to share some insufficient quantity. In the same manner, bullying within the family might be seen where the elder siblings force younger ones to wash their clothes for them, clean their rooms, and run errands for them. All this time, the parents might not be aware that such things are happening. From these examples, it can be gathered that writing a research paper on bullying can be fascinating. Nevertheless, as is common with a fascinating research topic, it is possible to drift out of the point and write an irrelevant essay. Therefore, a number of handy tips that guide and control the writing of a research paper exist. Tip number one involves the definition of key terms. The writer must not assume that every reader knows what bullying is. It is always good to begin any essay with a definition of the topic and the key words that will feature prominently in that essay. Examples of key words that a writer must try to include in an essay on bullying are coercion, threat, and victim among many others. The definition of key phrases and words will be followed by a synopsis about the pervasiveness of bullying in social settings. In this section, the writer will give a statistical background into the major forms of bullying in schools and families, as well as in other social settings where the trend has been observed. After this, the reader will select one situation where bullying has been observed to be notorious. A critical exposition of the situation will be given. This will call for profound information concerning the factors that trigger bullying, and the responses that have been implemented with respect to the behavior. The research paper is not complete if the writer fails to take in the documented effects that have resulted from acts of bullying. Similarly, the writer must outline the positive results that have been generated by the said responses, if there are any. As with any other paper, it is good to conclude the essay with a set of suggested actions the writer feels would aid in deterring bullies. An obvious but imperative tip is to proofread your paper to ascertain that there are no grammatical or typing errors. research paper writing service will provide you with a high-quality customized research project on Bullying topics and ideas. Just fill in the order form with your details.

Saturday, November 23, 2019

Robert Peary essays

Robert Peary essays Robert E. Peary was an explorer who lived between 1856 and 1920. He explored the North Pole after two failed attempts. He was also a native of Cresson, Pennsylvania and was born on May 6, 1856. Peary was educated at Bowdoin College, which is located in Brunswick, Maine, than served in the U.S. Navy as a civil engineer for several years in Before Peary made it to the North Pole, he made a few other discoveries. Such as the discovery in 1891 when he proved that Greenland was an Island, not a continent. This particular discovery came into effect from a prior trip to Greenland in 1886, which interested him in under-taking further expeditions to explore Arctic Regions. While on these expeditions he discovered and named Independence Bay on the north east coast of Greenland on July 4, 1892. During the years 1893 and 1897 he made many more important scientific discoveries that he published in a book in 1898 called Northward over the Great Ice. Pearys first attempt to discover the North Pole was in 1898. This trip, however, wasnt successful and he returned in 1902 after never reaching the pole. Three years later in 1905 Peary tried again to reach the North Pole. This time he sailed in the Roosevelt, which is a ship, designed to move among floes (masses of moving ice). Once they reached the north coast of Ellesmere Island, Perry and his men got off the ship and continued northward on sledges over the ice fields of the Arctic Ocean. This was his closest attempt to reaching the North Pole. In 1907 he published another book, Nearest the Pole, which told of his journey. In 1908 he began his third attempt to reach the pole. On April 6, 1909, accompanied by two Eskimos, he finally reached the pole. While there he was able to take soundings to prove that the sea, near the North Pole, isnt as shallow as what scientists believed. Just a week before Pearys return from his greatest discovery, an Americ ...

Thursday, November 21, 2019

Diversity at the work place Essay Example | Topics and Well Written Essays - 4000 words

Diversity at the work place - Essay Example ..........................................................................................................................5 Statement of the problem...............................................................................................................5 Literature review............................................................................................................................6 Findings .......................................................................................................................................10 Discussion.....................................................................................................................................12 Overcoming discrimination disability...........................................................................................15 Recommendations.........................................................................................................................17 Conclusion...................... ...............................................................................................................18 References .....................................................................................................................................20 Disability in the Workplace Abstract The issue of disability at workplaces has now taken a centre stage in many organizations and states for many years. Many governments have established policies, regulations and codes of conduct towards disabled individuals in terms of their involvement in organizational operations and responsibilities. As a result, management of companies have recognized the significance of implementing set policies on disabled individuals in their organizations. However, many disabled people in organizations across the world have been experiencing workplace discrimination based on their shortcomings. Disability discrimination is an illegal practice described by selective treatment of individuals with respec t to their physical abilities. Majority of the disabled individuals experience unfair treatment in the professional fields for many years. To date, some organizations have not completely gotten rid of the stigma. However, numerous organizations have implemented rules and regulations aimed at overcoming the disability in the workplace. Introduction Disability is a state of the body that limits the performance of an individual because of their physical or mental inability. A person with any physical or mental impairment or has a history of these conditions or is perceived to possess them is considered disabled in many organizations and countries across the world. Physical disability appears in many forms such as visual, hearing, mobility impairment, mental conditions such as autism and other chronic medical conditions such as diabetes, epilepsy and asthma. Disability discrimination in the work place still exists today with many disabled workers facing unfair treatment from either the employers or the co-workers. The management of all organizations are required to prevent and discourage any form of discrimination against the disabled. Disabled employees may receive lesser job benefits as compared to other workers because of their physical or mental conditions. Such benefits include less pay, minimal tasks assigned, limited training and other fringe benefits. The disabled employees may also be put under hardship working conditions that include being assigned difficult tasks with respect to

Wednesday, November 20, 2019

CULTURAL DIMENSIONS IN ADVERTISING Essay Example | Topics and Well Written Essays - 2000 words

CULTURAL DIMENSIONS IN ADVERTISING - Essay Example The products need to encompass global values to attract customers from pluralistic society. The paper therefore, would use global theme. It would evaluate three advertisements based on the broader context of global values and analyze the changing perception of the people vis-a-vis impact of socio-cultural paradigms on the perceived value of the product. Description and semiotic analysis of Advertisements 1. Axe products Currently Axe products from Unilever, especially men’s deodorants are one of the most popular brands of men’s grooming. The products have established excellent track records in the innovative marketing and advertising world. All the advertisements of Axe are highly global in theme and target the men’s segment and are broadly designed to highlight their sex appeal for opposite sex. The vibrantly displayed contents of the text and its background landscape are highly appealing for both men and women cutting across the divide of culture, race and nati onality. Unilever has adopted a creative market mix strategy for its Axe products to maintain competitive advantage in the global market. The advertisement targets men within the age group of 16-25 and subtly links its use as a portent means of attracting the opposite sex. The success of the advertisement lies in the glamour and humor of the contextual content that is very appealing. Indeed, Axe’s advertising targets adventurous young men and sends a subtle message that using it would make them not only more confident but also more popular amongst the fairer sex. Axe website on the whole, is a brilliant example of ecommerce activity that serves multiple purpose of advertising, marketing and selling of Axe products. 2. McDonald’s The company has been a world leader in the fast food category which has now incorporated ‘I’m lovin’ it’ within its logo also. The mission statement of McDonald’s, ‘To be our customer’s favorite pl ace and way to eat’ is reflected in all its advertisements and campaigns highlighted by cliche â€Å"I’m lovin’ it’. The company has established its brand equity by using common advertisement in all its food chain across the globe. The advertisement targets the demographic segment comprising of children, young adults and working people who relish food. The advertisement of its new product, ‘Angus Snack Wrap’ gives the opportunity to buyers to prepare the snack as per their palette taste. Indeed, a very innovative and tempting offer that is hard to ignore! The internet based website advertisement is not only greatly interesting for letting the customers create their own concoction of AngusWrap but concept of letting them have their own personal axiom to define their Wrap is par excellent. The advertisement again, portrays global values and helps transcend socio-cultural misgivings by encouraging customization of the products as per the taste and design of the individual. At the same time, it has successfully influenced the perceived value of its product of the customer by encouraging proactive participation in creating their own snack. Indeed, by catering to the demands of people coming from cross cultural background, it has been successful in adopting global values. The advertisements show Customers have remained its main focus and their satisfaction is ensured through customization, value and highly personalized

Sunday, November 17, 2019

The Kinship System of the Australian Aborigines Essay Example for Free

The Kinship System of the Australian Aborigines Essay In the following paper I will be discussing the kinship of the Australian Aborigines. I will be discussing how this culture impacts the way they behave such as how the act and live. I will also be comparing this behavior to that of my life. I hope that you find this paper to be interesting as well as informative. I will start out by giving a little background on the Australian Aborigines. They are a group of several hundred Indigenous people that reside in Australia. They have existed before the British annexation of Australia in 1788, before that the number of people was over four hundred. In many cases the people or groups will talk about their â€Å"people† and their â€Å"country†. The countries are ethnographic areas. In many cases each country had extended families that lived in them. It was common to have cousins that marry. I would now like to talk about how the Aborigines dress. In many cases by early settlers they were observed to be naked. Some of the tribes had men and women that wore a belt around their waste that was used to carry tools and weapons. This belt was made of animal hair, animal fur, skin or fiber. Before the colonization of the Europeans it was just a simple flap in the front but, after they had to modify it. In the winter months the Aboriginal people made cloaks to keep warm. Next I would like to talk about their language. There were somewhere between 200 to 250 different Aboriginal languages spoken. Now there are fewer than 200 that still remain and all but 20 are considered to be endangered. In 1888 the language was proof that it was necessary to refer to the Aboriginal names and locations throughout the colonies. There are actually some Aboriginal words that are still used today. Next I will talk about the diet of the Aboriginal people. They will hunt or fish for their meat, gather fruits, berries, eggs, plants and insects as well. Some of the meats that they eat are kangaroos, wallabies, echidnas and possums as well as some reptiles and birds. When hunting they would use spears and boomerangs to catch and kill their food. The women were normally responsible for picking the berries as well as caring for the younger children. These are just a few things that the Aboriginal people did and still do today. I will now be talking about their society compares to my own. I do not think that it compares to my society very much. Some of the things that they do are similar to my society in the respect of hunting. I come from a family of people that enjoy hunting for a source of food. Many times these family members will share the food with other family if they are unable to hunt for one reason or another. My family also likes to fish which is another way that we are similar. The ways that their society differs from mine is that we do not believe in marring within our family. In many families though out the United States this is seen as incest and is punishable by law. The other way that we are not similar is that we wear a full body of clothes and always have. I have had the chance to meet some Aboriginal people through the work that my mother used to do. I enjoyed hearing stories of how their ancestors did things and how some of these things have changed throughout time. They still practice the hunting as well as the gathering of their food but, many times can be found wearing clothing. In conclusion I hope that you have found this paper informational as well as informative. I have talked about their diet, how they live as well as I touched on their marring practices. I also have told you why I think that their society is close to my own as well as how it is different from my own. References Anonymous. (n. d. ). Australian aborigines- indigenous Australians. http://www. crystalinks. com/aboriginals. html Nowak, B. , Laird, P. (2010). Cultural Anthropology. San Diego, Bridgepoint Education, Inc. https://content. ashford. edu.

Friday, November 15, 2019

Harassment Essay -- essays research papers

OUTLINE THESIS STATEMENT: In today’s society 40 percent of the nation’s 55 million working women have experienced sexual harassment in the workplace. I.  Ã‚  Ã‚  Ã‚  Ã‚  Introduction II.  Ã‚  Ã‚  Ã‚  Ã‚  Types of sexual harassment   Ã‚  Ã‚  Ã‚  Ã‚  A.  Ã‚  Ã‚  Ã‚  Ã‚  Requirements of sexual harassment   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  1.  Ã‚  Ã‚  Ã‚  Ã‚  Concept of unwelcome conduct   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  2.  Ã‚  Ã‚  Ã‚  Ã‚  Sexual nature of conduct   Ã‚  Ã‚  Ã‚  Ã‚  B.  Ã‚  Ã‚  Ã‚  Ã‚  Claims of harassment   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  1.  Ã‚  Ã‚  Ã‚  Ã‚  Quid quo pro   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  2.  Ã‚  Ã‚  Ã‚  Ã‚  Hostile environment III.  Ã‚  Ã‚  Ã‚  Ã‚  Types of Recourse   Ã‚  Ã‚  Ã‚  Ã‚  A.  Ã‚  Ã‚  Ã‚  Ã‚  Face-to-face   Ã‚  Ã‚  Ã‚  Ã‚  B.  Ã‚  Ã‚  Ã‚  Ã‚  Employer intervention   Ã‚  Ã‚  Ã‚  Ã‚  C.  Ã‚  Ã‚  Ã‚  Ã‚  Legal action IV.  Ã‚  Ã‚  Ã‚  Ã‚  Prevention of sexual harassment   Ã‚  Ã‚  Ã‚  Ã‚  A.  Ã‚  Ã‚  Ã‚  Ã‚  Written document   Ã‚  Ã‚  Ã‚  Ã‚  B.  Ã‚  Ã‚  Ã‚  Ã‚  Proper and supervising   Ã‚  Ã‚  Ã‚  Ã‚  C.  Ã‚  Ã‚  Ã‚  Ã‚  Rumors and Innuendo V.  Ã‚  Ã‚  Ã‚  Ã‚  Conclusion   Ã‚  Ã‚  Ã‚  Ã‚  SEXUAL HARASSMENT IN THE WORKPLACE OF WOMEN Bernesha Benson SEXUAL HARASSMENT IN THE WORKPLACE OF WOMEN   Ã‚  Ã‚  Ã‚  Ã‚  What is sexual harassment? It is the conduct to unwelcome and affect the terms and conditions of employment. There are several different ways an individual can be sexual harassed . ∙  Ã‚  Ã‚  Ã‚  Ã‚  Derogatory or vulgar comments about someone’s gender, physical anatomy or characteristics. ∙  Ã‚  Ã‚  Ã‚  Ã‚  Sexually suggestive or vulgar language. ∙  Ã‚  Ã‚  Ã‚  Ã‚  Threats or physical harm. ∙  Ã‚  Ã‚  Ã‚  Ã‚  Sexually oriented or suggestive pictures, posters, magazines, or other materials. ∙  Ã‚  Ã‚  Ã‚  Ã‚  Touching someone in a sexually suggestive way, or in a way calculated ... ...bsp;  Ã‚  Ã‚  Anyone who supervisw needs to have some basic education in a number of employee relations areas, including sexual harassment . They also need to have an interpersonal of behavior awarness component in their training. All supervisors and managers should have a fundmental knowledge of equal opportunity and affirmiative action issues, the provisionsof TitleVII and its impact on the workplace. Basic information of human resources policies will also help managers. Supervsiors and managersshould understand what sexual harassment is and what it is not from both legal and practical point of view.   Ã‚  Ã‚  Ã‚  Ã‚  Human resources professionals and line managers are frequently in a position to hearthe latest corporate gossip. While we all know the exaggeration and elaboration are the gossipers stock in trade we also know that there is usually a kernel of truth inside the mass of rumor and innuendo when whispers have to do with possible sexual harassment, particularly when same players are featured again and again, the employer ignores these rumors at its peril. Discreet inquires may well uncover a situation that requires fast and professional intervention.