Cell Specialisation All cells are designed to perform a particular job within an organism‚ that is‚ to sustain life. Cells can become specialized to perform a particular function within an organism‚ usually as part of a larger tissue consisting of many of the same cells working together for example muscle cells. The cells combine together for a common purpose. All organisms will contain specialised cells. There are hundreds of types of specialised cells. Below is listed some of the major ones
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SCD also known as sickle cell disease affects the blood and cardiovascular system. There are six different types of SCD. The following discussion will include cause‚ symptoms‚ diagnosis‚ treatment and prevention. The proper education on this disease will give patients and the public a better knowledge of the common unfamiliarity with SCD. The cardiovascular system consists of the heart‚ arteries‚ capillaries‚ veins‚ and blood. The organs in the cardiovascular system are a vital part of the human
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Bacterial cells are Prokaryotic cells. These cells have several internal structures and surface structures. The cell walls are of two types‚ gram positive and gram negative. Out of all the structures‚ the two selected structures are the cell- wall and endospores. The cell- wall of bacterial cells is found in three distinct shapes such as spherical‚ spiral and rod shaped. The cell wall of the bacterial cells is composed of the proteins and polysaccharides. This is collectively called peptidoglycan
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Cell Reproduction Dr. Susan Kennedy Introduction to Biology January 28‚ 2012 Introduction Cellular reproduction is the process by which cells duplicate their contents and then divide to yield two cells with similar‚ if not duplicate contents. Life as we know it depends on the ability of cells to store‚ retrieve and translate the genetic instructions required to make and maintain a living organism. In this assignment‚ I will discuss two different types of cell reproduction
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doctors in the 1950’s‚ cells from her tumor were sent for research without her consent; and unfortunately the credit/rights that her and her family deserves have been thrown in the air. Medical procedures of the 1950s and 60s caused people to question if what was being done was moral or ethical for the family. Upon observation of the arguments made by the people and the scientific community‚ it is simple to see the fine line that people’s views may be approaching. HeLa (cells of Henrietta Lacks) have
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Sep. 21‚ 2014 Stem Cells Stem cells are the beginning of organism creation and have the potential to separate‚ becoming any kind of organism‚ endlessly. These cells have not gone through the process known as differentiation‚ which gives the cell a specific function. Technically‚ due to research over the recent years‚ scientists could grow certain organs with through stem cells because of the fact that these cells can be manipulated early on. There are multiple stem cells that have been determined
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INVENTION OF CELL PHONE CHANGES THE LIFE It is undeniable that the technology behind the cell phone is one of the greatest inventions. Cell phones have changed the world of communications. People are woken up by cell phones every day. Cell phone became an important element of our life. After Food‚ Clothes‚ Shelter‚ now Cell Phone. The cell phone has brought many advantages to our culture; it may also have contributed to an increase in risky behavior among people. Man became addicted to cell phones
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English 8 April 2011 Cell Phones: How They Have Changed Us Socially Cell phones have changed the way people socially interact with each other. Nowadays‚ anyone anywhere can just pick up their cell phone and call each other at any time of the day or night. (Stewart 1). In the past when there were just house phones around‚ people could use the excuse “Sorry I wasn’t home to answer your call” but now‚ with the emerging of cell phones‚ people will get a hold of you somehow. Cell phones are considered
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The CELL THEORY‚ or cell doctrine‚ states that all organisms are composed of similar units of organization‚ called cells. The concept was formally articulated in 1839 by Schleiden & Schwann and has remained as the foundation of modern biology. The idea predates other great paradigms of biology including Darwin’s theory of evolution (1859)‚ Mendel’s laws of inheritance (1865)‚ and the establishment of comparative biochemistry (1940). Ultrastructural research and modern molecular biology have
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which he called cells’ this in itself unbeknownst to him‚ was the discovery of the fundamental unit of all living things. In 1838 a botanist called Schleiden derived the theory The basic unit of structure and function of all living organisms is the cell.’ Over 150 years later this can be regarded as one of the most familiar and important facts within the biological fields. Drawing of cork cells published by Robert Hooke 1665 The Cell itself and use
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