Cell Organelles And Structures - 2117 Words

tion of Cell Organelles Cells are surrounded with a boundary known as the cell surface membrane and as well as holding the cell together, being semi-permeable, it controls the movement of materials across it. Within the cell are a number of structures each which have specific functions. These structures are known as organelles. The cell surface membrane and the membranes of any of the membrane bound organelles described below are made of the same material, a double layer of phospholipid molecules. Within the cell surface membrane, the intracellular space known as the cytoplasm, contains all the organelles and a fluid known as cytosol. Within the cytosol is a network of microtubules and fibres called the cytoskeleton. This cytoskeleton’s main functions are to give support to the cell helping to maintain its shape and aid the movement of organelles. Most cell organelles and structures are common to both animal and plant cells but there are some differences as outlined in the table below and as seen in fig. 1 and fig. 2. Organelles + structures Present in animal cells Present in plant cells Cell surface membrane Yes Yes Cytoskeleton Yes Yes Nucleus Yes Yes Endoplasmic reticulum Yes Yes Ribosomes Yes Yes Golgi body Yes Yes Mitochondria Yes Yes Lysosomes Yes Rarely Centrioles Yes Not in higher plants Cell wall No Yes Chloroplasts No Yes Vacuole No Yes Animal Cell (Fig.1) PlantShow MoreRelatedThe Structure And Function Of Cell Organelles1763 Words   |  8 PagesThe Structure and Function of Cell Organelles Cells are surrounded with a boundary known as the cell surface membrane and as well as holding the cell together, being semi-permeable, it controls the movement of materials across it. Within the cell are a number of structures each which have specific functions. These structures are known as organelles. The cell surface membrane and the membranes of any of the membrane bound organelles described below are made of the same material, a double layer ofRead MoreStructure and Function of Eukaryotic Cell Organelles1800 Words   |  8 PagesStructure and Function of Eukaryotic Cell Organelles What are eukaryotic and prokaryotic cells? Organelles in Eukaryotic Cells The Nucleus. Nearly all animal cells have a nucleus, with the only exception being the red blood cell. The nucleus has two major functions, which are housing the DNA and controlling the cell’s activities. In the centre of the nucleus is the nucleolus. This doesn’t have a membrane, but holds itself together. In the nucleolus, ribosomes are created through the mixtureRead MoreThe Structure And Function Of Organelles Within A Eukaryotic Cell Essay1376 Words   |  6 PagesThe Structure and Function of Organelles within a Eukaryotic Cell The Structure of the Membrane and its Function in Cell Transport The essence of life begins with knowing that all living things are made from cells. Cells and what is contained inside form the basic unit of structure and function in an organism. All cells have the same basic structure, the vital part being organelles. The name organelle comes from the Latin organellea; which means little organ. They can be found in both eukaryoticRead MoreEukaryotic Cells And Its Functions978 Words   |  4 Pagesâ€Å"Eukaryotic cells are complex and include all animal and plant cells. Prokaryotic cells are smaller and simpler, e.g. Bacteria† - (AQA 2008) Eukaryotic cells contain membrane-bound organelles, whereas prokaryotic cells do not contain these. Although both of these cells contain DNA, only eukaryotic cells contain a nucleus. The nucleus is the largest organelle, surrounded by a double membrane (nuclear envelope) containing lots of pores. The nuclear membrane protects contents of the nucleus and controlsRead MoreDifference Between Plant And Animal Cells1309 Words   |  6 Pages CELL OBSERVATION LAB By Alexandra Escaja-Heiss, Ashley Reeves, Christine Constant Period G1/B3a - Living Systems 10/22/15 Purpose To identify the difference between plant and animal cells, recognize their structures, and to better understand the various functions of those cell organelles. II. Background In 1665 Robert Hooke used an early light microscope to look at a thin slice of cork. Under the microscope the cork looked to have thousands on empty chambers, whichRead MoreTypes Of Cells And Prokaryote And Eukaryote1480 Words   |  6 Pagesare two types of cells; Prokaryote and Eukaryote. They have many differences including their structures and functions. The main difference being that a Eukaryote cell has an organised nucleus with a nuclear envelope, whereas a prokaryote cell does not have a nucleus at all. Eukaryotes are much more complex than a prokaryote cell. They have multiple organelles with many different functions. Eukaryotic cells are bigger in size than Prokaryotic cells. Some examples of eukaryotic cells are: animals, plantsRead MoreA Comparison of Eukaryotic and Prokaryotic Cells Essay1304 Words   |  6 PagesA Comparison of Eukaryotic and Prokaryotic Cells There are two main types of cells in the world. The simplest cells such as bacteria are known as Prokaryotic cells, and human cells are known as Eukaryotic cells. The main difference between each of these cells is that a eukaryotic cell has a nucleus and a membrane bound section in which the cell holds the main DNA which are building blocks of life. Prokaryotic cells do not have a nucleus. The chromosomes which are found in prokaryotes are usuallyRead MoreCell Lab Report1076 Words   |  5 Pagesï » ¿STRUCTURE AND FUNCTION OF LIVING CELLS Name Answer the following questions as you work your way through the lab material typing in your answers. Then submit your completed lab report through the â€Å"Assignment† feature. This lab report is worth 50 points towards your final lab grade. Also, per the Honor Code, this work must be your own. CELLS Using your Biology Textbook answer the following questions. 1. What types of organisms are Prokaryotes? The Prokaryotes are organisms that areRead MoreMiddle School El Students- Carlos986 Words   |  4 Pagesof a cell as a whole and ways parts of cells contribute to the function. ïÆ'Ëœ SWBAT: Students will be able to identify the different parts of a plant and animal cell ïÆ'Ëœ SWBAT: Students will be able to describe/ define the function of the parts of a cell ïÆ'Ëœ SWBAT: Students will create a model of a cell. WV ELP Standards: 1, 2, 5, 7 Language Objectives: ïÆ'Ëœ SW be able to orally describe the structure and function of a cell to a partner ïÆ'Ëœ SW define and use scientific terms for cells, organelles, andRead MoreAnimal Cells And Their Functions1044 Words   |  5 PagesAnimal cells and their functions Cell Membrane The cell â€Å"surface† membrane is a semi-permeable membrane whose function is to control the exchange of substances between the cell and its environment. Semi-permeable means that only certain molecules are allowed to be transported in and out of the cell. The membrane is mainly made up of Lipid and protein. On the diagram, the Cell Membrane forms the â€Å"outer shell† of the animal cell, and can be seen as the bold line around it. Nucleus The Nucleus has a

Lies My Teacher Told Me by James W. Loewen Essay - 1948 Words

Lies My Teacher Told Me by James W. Loewen High school history textbooks are seen, by students, as presenting the last word on American History. Rarely, if ever, do they question what their text tells them about our collective past. According to James W. Loewens Lies My Teacher Told Me, they should be. Loewen has spent considerable time and effort reviewing history texts that were written for high school students. In Lies, he has reviewed twenty texts and has compared them to the actual history. Sadly, not one text measures up to the authors expectation of teaching students to think. What is worse, though, is that students come away from their classes without having developed the ability to think coherently about social†¦show more content†¦According to Loewen they got his name right, and not much else. Lies points out that there were many groups of explorers that had discovered America before Columbus. He probably used some of their information as a basis for his plans to sail west. A full eight pages are d evoted to other possible explorers. These groups include ancient groups from Indonesia, Japan, China, and Phoenicia. More recent groups include the Vikings, British Islanders, West Africans, and Portuguese fishermen. There are varying levels of evidence connecting these groups to pre-Columbian America, but still enough to throw doubt into the mix. Columbus got the credit because of the way in which Europe responded to his discovery. Other false ideas taught about Columbus deal with what is left out. His original motivation may have been to find another trade route to the Orient, but his real motivation, in subsequent expeditions to America, was money. By 1493 Columbus had planned to plunder Haiti, according to Michele de Cuneo, who had been on Columbuss first voyage. Columbus, himself, said to Ferdinand and Isabella that his motivation was gold, and gold constitutes treasure; and he who has it does all he wants in the world, and can even lift souls up to Paradise (Lies p34). Another side of ColumbusShow MoreRelatedEssay about Analysis in James W. Loewen ´s Lies My Teacher Told Me1225 Words   |  5 Pages James W. Loewen wrote the book â€Å"Lies My Teacher Told Me† to help students understand the past of the United States, and how it is effecting the present time. â€Å"Lies My Teacher Told Me† looks at 12 different American history textbooks, and points out the different lies, flaws , and sugar coated stories the textbooks present. Lowen explains how textbooks practice heroification, and how race and race relations are a major issue when it comes to American history. Among these topics, Lowen also shedsRead MoreEssay about Christopher Columbus: Hero or Villain?781 Words   |  4 Pagesall of our years that we are taught about world history, we are led to believe that Columbus was one of the greatest explorers of all time. In my mind there is no question about whether Christopher Columbus discovered America; of course he did, its Columbus! However, this is a highly debated issue and through writings by authors Jeffery Hart and James W. Loewen we will investigate the true importance of Columbus. nbsp;nbsp;nbsp;nbsp;nbsp;In the essay written by Jeffrey Hart entitled, â€Å"DiscoveringRead MoreSummary : Indoctrinate Blind Patriotism 1151 Words   |  5 PagesElizabeth Tolentino Dr. Andrea Johnson Loewen Paper 29 September 2014 Question 1: What is your interpretation of the statement on page six that includes, â€Å"†¦indoctrinate blind patriotism†¦Ã¢â‚¬  Answer 1: In Lies My Teacher Told Me, James W. Loewen asserts that American history texts are harmful to students because of nationalism and books that â€Å"†¦are often muddled by the conflicting desires to promote inquiry and to indoctrinate blind patriotism† (Loewen 6). Loewen argues that American history texts areRead More The Decline of Education: Social and Economic Inequality Essay1193 Words   |  5 Pages and therefore people would be back to the starting block positions of hard manual labor. However, according to James Loewen’s â€Å"The Land of Opportunity,† even the educational system is slipping, stating that when he asked questions like, â€Å"why are people poor?† he got woefully inadequate responses. In both â€Å"The Land of Opportunity† and â€Å"Lies My History Teacher Told Me,† both by Loewen, the root cause of most of the problems in schools and their lack of adequate education are the textbooks. TheRead MoreEssay on Lies My Teacher Told Me Heroification821 Words   |  4 PagesAshley Walker Mr. Scott INTD 101-18: The Art of Seduction 29 September 2011 A False History James Loewen uses his piece Lies my Teacher Told Me to reveal the flaws in America’s mainstream textbooks. Loewen points out the fact that textbooks try to â€Å"indoctrinate blind patriotism† (Loewen 6) and â€Å"keep students in the dark about the nature of history† (Loewen 8). Almost every American textbook sells history using the â€Å"soft seduction† approach, as explained in Robert Greene’s book, The Art ofRead More The Hypocrisy of Teaching American History Essays630 Words   |  3 Pagesare the basic outline for American schools. In those subjects, where does history fit in? Some believe that teachers avoid history because of how corrupt America has been. James W. Loewen, author of Lies My Teacher Told Me, says, Parents may feel undermined when children get tools of information not available to adults and use them in ways that seem to threaten adult-held values. (Loewen 296.) The adults had to learn the same false history children are be ing taught today. By teaching children theRead MoreFood Assumptions: Everything the Food Industry Does Not Want Consumers to Know1051 Words   |  5 Pagesmessage that the book, Lies My Teacher Told Me, by James Loewen, delivers about how the public is deceived in regards to history. One specific food lie is how the Corn Refiners Association wants the public to believe that High Fructose Corn Syrup (HFCS) is the same as sugar and is perfectly healthy for consumption. As some research suggests, this is a faulty food assumption. Patriotic textbooks â€Å"leave out anything that might reflect badly upon [them]† (Loewen 5). Loewen argues that â€Å"if textbooksRead MoreEssay on Lies My Teacher Told Me910 Words   |  4 Pagesour past. This is where we get the misinterpretation of history. In chapter five of the book Lies My Teacher Told Me, these contradictions are brought into light and force us to look at them again. As I have learned in my history courses we can always question the accuracy of a story but we may never fully understand the truth. There have been three important times I have been through that have shaped my understanding of history today, specifically the part of history dealing with slavery and racismRead More The Lies My Teacher Told Me and People’s History of the United States1462 Words   |  6 Pages either adding or subtracting certain details from the story. James Loewen, in The Lies My Teacher Told Me, reveals how much history has been changed by textbook writes so that students studying the textbooks can understand and connect to the information. In Howard Zinn’s, People’s History of the United States, the author recounts historical tales through the point of view of the common people. Mainstream media, as proven by Loewen and Zinn, often pollutes and dilutes history to make the informationRead MoreEssay on A Critical Analysis of Lies My Teacher Told Me1014 Words   |  5 PagesA Critical Analysis of:Lies My Teacher Told Me It would be better not to know so many things than to know so many things which are not so. -FELIX OKOYE Out of all forms of literature currently known to man, educational textbooks are arguably the least interesting. On top of being incredibly boring, textbooks, especially American history ones, neglect to include the entirety of the information that it should. Because American history textbooks wish only to paint

Social Issues in Judith Wrights work Essay Example For Students

Social Issues in Judith Wrights work Essay Social issues are displayed in many poets work and their beliefs on these issues are exposed intentionally through the use of various techniques. Judith Wright conveyed her view on social issues in most of her poems, and built her argument by using a variety of poetic techniques which position the reader to comprehend her beliefs. By developing a socially critical perspective through her poems, Wrights view of the worlds social issues is presented to the reader in a way that forces them to ponder on the aspects of society mentioned. Woman to Man and Remittance Man are two poems through which Wrights beliefs on pregnancy, the relationship between man and wife, and social dissatisfaction due to context are examined. Poetic techniques or devices such as rhythm, figurative language and rhyme all position the reader not only to be aware of the social issue, but also to understand it, often through Wrights perspective. Woman to Man is an example of a poem which examines a social issue through poetic techniques, based on Wrights context at the time. Woman to Man by Judith Wright expresses a womans thoughts on pregnancy and was written when Wright herself was pregnant. Due to this fact, one can assume that the poem explores Judith Wrights thoughts on pregnancy as she speaks to her husband through the poem, expressing her feelings through various poetic techniques. The poem displays an unusual strength for moving the reader through the emotional tension, the development of ideas and the structure as this delicate topic is handled with precaution and disciplined craftsmanship. The steady progression of ideas seen in the well laid out structure causes a more dramatic reading on a subject which Wright felt so strongly about. The poem Woman to Man has evidently been written with confidence and emotional sincerity as Wright shows she knows what she wants to say. One can see this through the easy balance of the lines, even in line three which ends, or is maintained with a dash. This is meant to be a silence for the reader to ponder on what has just been mentioned. Again, the balance is maintained in the last line by a comma, which also indicates silence and thus stresses the four last words for I am afraid. These words portray strong feeling of anxiety and mirror Wrights feelings about her pregnancy at the time. The poem identifies with her emotions and the issue of pregnancy affecting marriage not only through structure, but also through speed and rhythm. Wright reinforces her feelings about her pregnancy and her belief that pregnancy is sacred through the speed and rhythm of the poem Woman to Man. It also gives the reader a feeling about what is occurring in the poem, in this case, sexual intercourse. The increasing speed and urgency of the lines suggested by the use of short vowels, particularly in the last stanza, where the second last line can be seen as the orgasm. The image in this line is exaggerated through the power of its series of single syllables which alternate light and heavy stresses, combined with short vowels and plosive consonants (b, t, a), mainly in the stressed words, blaze, light and blade. A relaxation after the climax is suggested in the last line as the vowels are longer and the consonants softer. The ds still suggest fear in the words hold and afraid replacing the passion of the sexual act. Throughout the poem, rhythm and speed create an atmosphere of beauty and excitement, all of which Wright feels during pregnancy. The solemn tone created by the previous stresses indicates the womans realisation about what she is taking on. Another technique which supports Wrights feelings about the issue is imagery. .u5db4e6d89ef34b6a8f2ec3d9839c693d , .u5db4e6d89ef34b6a8f2ec3d9839c693d .postImageUrl , .u5db4e6d89ef34b6a8f2ec3d9839c693d .centered-text-area { min-height: 80px; position: relative; } .u5db4e6d89ef34b6a8f2ec3d9839c693d , .u5db4e6d89ef34b6a8f2ec3d9839c693d:hover , .u5db4e6d89ef34b6a8f2ec3d9839c693d:visited , .u5db4e6d89ef34b6a8f2ec3d9839c693d:active { border:0!important; } .u5db4e6d89ef34b6a8f2ec3d9839c693d .clearfix:after { content: ""; display: table; clear: both; } .u5db4e6d89ef34b6a8f2ec3d9839c693d { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .u5db4e6d89ef34b6a8f2ec3d9839c693d:active , .u5db4e6d89ef34b6a8f2ec3d9839c693d:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u5db4e6d89ef34b6a8f2ec3d9839c693d .centered-text-area { width: 100%; position: relative ; } .u5db4e6d89ef34b6a8f2ec3d9839c693d .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u5db4e6d89ef34b6a8f2ec3d9839c693d .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u5db4e6d89ef34b6a8f2ec3d9839c693d .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .u5db4e6d89ef34b6a8f2ec3d9839c693d:hover .ctaButton { background-color: #34495E!important; } .u5db4e6d89ef34b6a8f2ec3d9839c693d .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .u5db4e6d89ef34b6a8f2ec3d9839c693d .u5db4e6d89ef34b6a8f2ec3d9839c693d-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u5db4e6d89ef34b6a8f2ec3d9839c693d:after { content: ""; display: block; clear: both; } READ: Thomas Hobbes Essay PaperImagery is one of the focal techniques used in Judith Wrights Woman to Man. It creates an image in the readers mind supporting the emotion Wright felt when she wrote the poem. There are three kinds of imagery in the poem; abstract imagery, figurative imagery and literal imagery. The eyeless labourer in the night (line 1) is not meant to be taken literally, but is suggesting a living but less than human entity which is identified only through the .