Cytoplasm - Definition and Function

Cytoplasm - Definition and Function Cytoplasm consists of all of the contents outside of the nucleus and enclosed within the cell membrane of a cell. It is clear in color and has a gel-like appearance. Cytoplasm is composed mainly of water but also contains enzymes, salts, organelles, and various organic molecules. Cytoplasm Functions The cytoplasm functions to support and suspend organelles and cellular molecules. Many cellular processes also occur in the cytoplasm. Some of these processes include protein synthesis, the first stage of cellular respiration (known as glycolysis), mitosis, and meiosis. In addition, the cytoplasm helps to move materials, such as hormones, around the cell and also dissolves cellular waste. Divisions The cytoplasm can be divided into two primary parts: the endoplasm (endo-,-plasm) and ectoplasm (ecto-,-plasm). The endoplasm is the central area of the cytoplasm that contains the organelles. The ectoplasm is the more gel-like peripheral portion of the cytoplasm of a cell. Components Prokaryotic cells, such as bacteria and archaeans, do not have a membrane-bound nucleus. In these cells, the cytoplasm consists of all of the contents of the cell inside the plasma membrane. In eukaryotic cells, such as plant and animal cells, the cytoplasm consists of three main components. They are the cytosol, organelles, and various particles and granules called cytoplasmic inclusions. Cytosol: The cytosol is the semis of organelles include mitochondria, ribosomes, nucleus, lysosomes, chloroplasts, endoplasmic reticulum, and Golgi apparatus. Also located within the cytoplasm is the cytoskeleton, a network of fibers that help the cell maintain its shape and provide support for organelles.Cytoplasmic Inclusions: Cytoplasmic inclusions are particles that are temporarily suspended in the cytoplasm. Inclusions consist of macromolecules and granules. Three types of inclusions found in the cytoplasm are secretory inclusions, nutritive inclusions, and pigment granules. Examples of secretory inclusions are proteins, enzymes, and acids. Glycogen (glucose storage molecule) and lipids are examples of nutritive inclusions. Melanin found in skin cells is an example of a pigment granule inclusion. Cytoplasmic Streaming Cytoplasmic streaming, or cyclosis, is a process by which substances are circulated within a cell. Cytoplasmic streaming occurs in a number of cell types including plant cells, amoeba, protozoa, and fungi. Cytoplasmic movement may be influenced by several factors including the presence of certain chemicals, hormones, or changes in light or temperature. Plants employ cyclosis to shuttle chloroplasts to areas receiving the most available sunlight. Chloroplasts are the plant organelles responsible for photosynthesis and require light for the process. In protists, such as amoeba and slime molds, cytoplasmic streaming is used for locomotion. Temporary extensions of the cytoplasm known as pseudopodia are generated that are valuable for movement and capturing food. Cytoplasmic streaming is also required for cell division as the cytoplasm must be distributed among daughter cells formed in mitosis and meiosis. Cell Membrane The cell membrane or plasma membrane is the structure that keeps cytoplasm from spilling out of a cell. This membrane is composed of phospholipids, which form a lipid bilayer that separates the contents of a cell from the extracellular fluid. The lipid bilayer is semi-permeable, meaning that only certain molecules are able to diffuse across the membrane to enter or exit the cell. Extracellular fluid, proteins, lipids, and other molecules may be added to a cells cytoplasm by endocytosis. In this process, molecules and extracellular fluid are internalized as the membrane turns inward forming a vesicle. The vesicle encloses the fluid and molecules and buds off from the cell membrane forming an endosome. The endosome moves within the cell to deliver its contents to their appropriate destinations. Substances are removed from the cytoplasm by exocytosis. In this process, vesicles budding from Golgi bodies fuse with the cell membrane expelling their contents from the cell. The cell membrane also provides structural support for a cell by serving as a stable platform for the attachment of the cytoskeleton and cell wall (in plants). Sources: â€Å"Cytoplasmic inclusions.† The Free Dictionary, Farlex, medical-dictionary.thefreedictionary.com/cytoplasmic inclusions. â€Å"Ectoplasm.† The Free Dictionary, Farlex, medical-dictionary.thefreedictionary.com/ectoplasm.â€Å"Endoplasm.† The Free Dictionary, Farlex, medical-dictionary.thefreedictionary.com/endoplasm.Goldstein, Raymond E., and Jan-Willem van de Meent. â€Å"A physical perspective on cytoplasmic streaming.† Interface Focus, The Royal Society, 6 Aug. 2015, www.ncbi.nlm.nih.gov/pmc/articles/PMC4590424/.

Leave out the Latin - Emphasis

Leave out the Latin Leave out the Latin One of our members of staff recently phoned his GP practice and asked to see a specific doctor. Sorry, he only comes in pro re nata, the receptionist told him. It wasnt until hed put the phone down and looked up the phrase that he knew for sure what she had meant, writes Cathy Relf. It would be considered crass and more than a little odd for a native English speaker speaking to another native English speaker to switch to another language mid-sentence. So why do some people think its acceptable to do so with Latin? To be effective, writing needs to be clear and accessible. It shouldnt confuse the reader or require them to reach for a dictionary. In fact, when someone has to look away for long enough to look up a word, they may never return. Only a minority of native English speakers have any formal knowledge of Latin. In the UK in 2011, just 9,650 pupils out of a total of 5.15 million took a Latin GCSE. Thats less than two per cent. Admittedly, that proportion was slightly higher when your average businessperson was at school, but the fact remains that the moment you slip in a line of Latin, or even over-pepper a sentence with post, ad hoc and per se, whether its apropos (appropriate) or not, you risk alienating the majority of your readership. There are some professions medicine and law, for example where Latin is a crucial part of the language (although lawyer Wayne Schiess makes a good case against using unnecessary Latin in legal writing). But outside of those professions, there are few cases where using an expression that your readers may not understand would be better than writing it in plain English. This isnt to say theres anything wrong with studying or taking an interest in Latin after all, much of our language is based on it. And its fine to use commonly understood abbreviations such as eg, ie, etc, if theyre genuinely more appropriate than for example, that is, and and so on. Just make sure you use them correctly. Latin on the loose Weve rounded up five examples of Latin obstructing meaning, below. If youre not familiar with the Latin terms, hover over them for a rough translation, or click to see the full definition. Heres Kathy Gyngell blogging for the Daily Mail: This is what the Bishops amendment to exclude child benefit from Iain Duncan Smiths benefit cap plan, inter alia, endorses the continuation of entitlement. A paper from the Social Development Agency: This Vademecum is intended as a handy reference guide to using budget heading 04.03.03.03. on information, consultation and participation of representatives within undertakings. A Wired.com article on the rules of cooking: While there are certainly still subjective and somewhat impenetrable qualities to ones cuisine de gustibus non est disputandum there is an increasing rigor in the kitchen. An article on robo-cars: And given the Supreme Courts recent ruling on police use of GPS, even when tracking criminals, the idea that more technology in the car leads ipso facto to more government control is questionable. And, making a case for the teaching of Latin in schools, Boris Johnson writing in the Telegraph: Suppose you are captured by cannibals in the Mato Grosso, and you find a scrap of Portuguese newspaper in your hut revealing that there is about to be an eclipse; and suppose that by successfully prophesying this event you convince your captors that you are a god and secure your release I reckon you would be thankful for your Latin, eh? And even if you reject any such practical advantages (and, experto crede, they are huge), I dont care, because they are not the point. How many of them could you follow, without checking the definitions? With the possible exception of Boris Johnson, whose Latin is at least relevant to the subject in hand, these are all quite bizarre language choices. In the first case, among other things would have been a much better and clearer expression than inter alia. In the second, the use of Vademecum (or vade mecum, as it is more commonly spelt) alongside handy reference guide is tautologous. It essentially says this handy reference guide is intended as a handy reference guide. In the third, what purpose could there be for writing in Latin, other than for the writer to show that he can? And in the fourth, the ipso facto is unnecessary if any clarification is needed, automatically or directly would do fine. The case against While studying Latin is admirable, using it in everyday language isnt. Not only does it sound pompous and offputting, it obstructs communication. Even Boris doesnt make an argument for actually using it, merely for knowing it in case of encounters with cannibals who cant read newspapers. When writing, always keep your readers at the front of your mind. What do they need to know, and how can you best communicate it? If the answer to the second question is in Latin, then by all means go ahead but those occasions are, we suspect, rare. Wed love to hear your thoughts. Have you spotted some Latin on the loose? Can you defend any of the above examples? Do you have a particular phrase that youre fond of dropping into writing? Leave us a comment below.

Political Science- Indigenous Autonomy and State Development Tensions Research Paper

Political Science- Indigenous Autonomy and State Development Tensions - Research Paper Example Examining the different effects which this has as well as how it can be altered to begin to incorporate different concepts within both areas then provides alternatives to ensure that there is more unity between the two populations while creating a stronger balance with both the indigenous and state populations. The difficulties which are occurring in Latin America between the state and indigenous populations are based specifically on the agenda of both and the identity which both holds. The indigenous populations have specific issues with the development of the country into modern terms. This is taking away the identity, cultural affiliations and basic rights of the indigenous population and the beliefs which they hold. At the same time, the state is being pressured to continue to develop and open the country for different activities that can stimulate the economy, communities and other objectives that are within politics. The pressures which are arising have come from the belief that the indigenous populations are becoming oppressed with the actions of the state while losing both identity and culture in Latin America. This is being developed specifically by the political movements, social conflicts and the pressures to establish new components within the country (Sieder, 29). The problem which is a part of the indigenous and state cultures of Latin America needs to find new solutions for both development and preservation of the cultures which are associated in given regions. The question of whether corporate social responsibility is one which can be used to alter the tensions in the region then become associated with the culture and affiliations with Latin America. The ideology of corporate social responsibility is one which requires businesses recognizing the indigenous cultures and needs within the general population. The actions which take place are then developed to help those which are in

African Americans as the Vulnerable Population Term Paper

African Americans as the Vulnerable Population - Term Paper Example Within the United States, racial segregation often implied the physical separation together with provision of separate services or facilities (mostly during the era of Jim Crow), although it could also refer to other distinct racial discrimination manifestations. For at least two hundred years before the beginning of the civil war, slavery is said to have existed within America. However, after this war, things moved from bad to worse for the black community. The southern part of America, especially, felt that they actually needed to move with speed and come up with legislation that would restrict the movement and association of blacks with other majority races. The former confederates, southern legislatures opted to pass laws popularly regarded as black codes, which immensely limited the blacks’ rights and subsequently segregated them from the white community. There had been no need for separating blacks and whites since approximately 95% of the blacks had been salves. However, they were still separated at taverns, theatres, schools and other social places. The blacks, therefore, witnessed a series of segregation tendencies from their white counterparts and with time, they got to adopt the situation. It is with this regard that congress swiftly moved to respond to this legislation in 1866 and managed to seize the responsibility of remaking the south. The Republican group demanded that the remaking of the south be marked by the viability of freed blacks in the society (John, 1997). By 1868, most of the laws, which happened to discriminate against the blacks, were effectively repealed.

A Quality Leader Essay Example for Free

A Quality Leader Essay Dr. Karoru Ishikawa is one of the world’s idolized leaders in quality control. His famous quote† Through total quality control with the participation of all employees, including the president, any company can create better products (or service) at a lower cost, increase sales, improve profit and make the company into a better organization ( Dr. Kaoru Ishikawa) . Ishikawa joined the Union of Japanese Scientist and Engineers, a quality research group back in 1949. The Japanese was concerned about their industry sector since it was known that American manufacturing was producing cheap toys and defective cameras. This group took on the responsibility of Japan’s quality-improvement; that was when Ishikawa took the initiative to build on Feigenbaum’s concept of total quality and promoted greater involvement by all employees, from the top management to the front-line staff, by reducing reliance on quality professionals and quality departments. He advocated collecting and analyzing factual data using simple visual tools, statistical techniques, and teamwork as the foundations for implementing total quality. Like others, Ishikawa believed that quality begins with the customer and therefore, understanding customers’ needs is the basis for improvement, and that complaints should be actively sought. (Evans, 2010 pg 110) Background Kaoru Ishikawa was born in 1915 in Tokyo. He graduated from Tokyo University in 1939 with a degree in Applied Chemistry. In his brief tour in the military as a Naval Technical Officer In charge of 600 workers to construct a factory he quoted â€Å"This experience he says was invaluable to Quality Control activities later on. †, (Dr. Kaoru Ishikawa) He worked for Nissan Liquid Fuel Company from 1941-1947 before he was appointed associate Professor of the University of Tokyo. In 1949 He joined the Union of Japanese Scientist and Engineers because he wanted to change the way people thought about work and help management improve the quality of their product. In 1970 Dr. Ishikawa started conducting quality control training seminars. Around 1978 Dr. Ishikawa became the President of Musashi Institute of Technology. Upon Ishikawa’s 1989 death, Dr. Juran delivered this message: â€Å"There is so much to be learned by studying how Dr. Ishikawa managed to accomplish so much during a single lifetime. In my observation, he did so by applying his natural gifts in an exemplary way. He was dedicated to serving society rather than serving himself. His manner was modest, and this elicited the cooperation of others. † (Dr. Joseph M. Juran) Primary work and significant accomplishments Dr. Kaoru Ishikawa accomplishments have include helping thousands of companies, like IBM, Bridgestone, and Komatsu, to turn out higher quality products at considerable lower costs. His book,†What is Total Quality Control? The Japanese Way†, Prentice Hall, Inc. was a best seller in business books. He has been awarded the Deming Prize and the Nihon Keizai Press Prize, the Industrial Standardization Prize for his writings on Quality Control, and the Grant Award in 1971 from the American Society for Quality Control for his education programmer on Quality Control. Process Improvement Japan, 2012). His creation of the fishbone diagram, the user can see all possible root causes of process imperfections. There are many other accomplishments that Dr. Ishikawa has made, which you can find in books and online. These were deserving awards due to his unselfish work ethics and have truly made him a quality genius. Conclusion Through total quality control a company of any type can stay in business, make products at lower cost, and endure great productivity from its workers. Dr Ishikawa wanted to change the way workers and management do business. Quality should start with the customer and it can be done using his writings, fishbone diagram, and other tools like control charts, run charts, histogram, scatter diagram, Pareto charts, and flowcharts. His knowledge was needed in a time when people wanted a product that will last and was supported by the company who makes it. His many accomplishments and strong work ethics influenced many companies to change and many of those companies are still in business today. Dr. Ishikawa is truly a leader in quality control.

Investigation to Find the Relative Energy Release of Five Alcohols: Eth

Investigation to Find the Relative Energy Release of Five Alcohols: Ethanol, Methanol, Propanol, Butanol and Propanol Aim: In this experiment I will investigate to see which alcohol releases the most energy during combustion; Methanol, Ethanol, Propanol, Butanol or Pentanol. Hypothesis: I think that the alcohols with the longest carbon chains will release the most energy. This is because when a bond is broken energy is released. This means that the alcohols with longer chains and therefore more bonds will release more energy. This will mean they will heat the water quickest. This should mean that Pentanol will heat the water by the largest mount in 5 minutes. However, because of the longer hydrocarbon chains and therefore more bonds, Pentanol will also be the hardest to ignite, least volatile and least viscous. Despite the larger requirement for input of energy, the amount created by the breaking of bonds should increase by more which will mean that Pentanol will still release more energy than Methanol, Ethanol, Propanol and Butanol. To test this I have performed several calculations. By using figures for the amount of KJ/mol that the breaking of various bonds (O-O, C-H, O-H, C-C, C-O) release I have calculated the amount of energy that is needed to combust each of the alcohols. GRAPH The calculations that I have performed have proved my theory to be correct. Pentanol is quite clearly the alcohol that should release more energy, more than five times as much as Methanol, but my experiment will show whether this extra energy can be put to good use, or if too much is wasted for it to be useful. The calculations show that Pentanol will release more energy. Even though the combustion product... ...could have effected the amount of alcohol that was getting to the tip of the wick to be burnt. Also, the wicks were made of many different materials. Although the wick itself does not burn the different materials may have soaked up more of the alcohols allowing them to burn easier. However, I do think that the method that we developed was the best way that we could have done the experiment. The overall method was very successful and allowed us to complete the experiment efficiently. However, I would quite like to repeat the experiment. I would definitely try to change the method so that the experiment is in a more controlled environment. This would prevent several factors, such as the wind, from effecting or results as they did in this experiment. Overall the experiment was relatively successful and provided us with a fairly useless, but interesting, set of results.

Breadcrafter’s breads Essay

This business plan is a tightly constructed, succinct consideration of all factors relevant to launching this bakery. From rent charges to competition and seasonal changes to costs per loaf, this plan hasn’t left anything out†¦all without being overly verbose. This exemplary plan is very focused and complete, which will help the business stay on course. Breadcrafter’s breads will stand out from the competition due to their uniqueness and outstanding quality. Most of the breads are European in style, including Sourdough, Miche (a traditional French whole wheat bread), and Sourdough Rye. These breads are made by the sourdough method which uses no added yeast. This method imparts a rich flavor, which can be tangy or mild, as well as a toothsome inner crumb and a crackly crust. By using this method, a skilled baker can create truly delicious breads without added fats or sugars, making many of Breadcrafter’s products 100% fat free. Sourdough breads also have an extended shelf life, remaining fresh for days without the use of preservatives. Breadcrafter will also offer specialty breads, which will be made in the sourdough way with the addition of such luxurious ingredients as Parmagian cheese with fresh ground pepper and dried Michigan cherries with roasted pecans. Spent Grain Bread, made with barley leftover from beer brewing, is another unique product that Breadcrafter will offer. Two varieties of French style baguettes will be offered fresh daily, a high demand product that is available nowhere else in the area. Breadcrafter will also produce White and Wheat Sandwich Breads with soft crust and a tender crumb for traditional American Style sandwiches. As the needs of the customer change, so will the lineup of Breadcrafter’s products. The bakery equipment is chosen with versatility in mind. After establishing the business, Breadcrafter will research the possibility of producing sandwiches to increase revenues. This investment would require approximately $1500.00 for the purchase of equipment and ingredients. The company will also pursue wholesale contracts. Toothsome Foods Company has indicated interest in a contract to produce two Christmas products on a per loaf basis, Cherry Chocolate Fruitcake and Midwest Christmas Stollen. These products can help generate revenues in the slower Autumn months. The proprietor will also consider producing some of Toothsome Foods’ current lineup of Handmade Breads on a wholesale basis. Read more: http://www.referenceforbusiness.com/business-plans/Business-Plans-Volume-05/Bread-Bakery-Business-Plan.html#b#ixzz2IzCX4Wxt