Osmosis of a Potato cell. Hypothesis is that the potato in saltwater is going to show that it will break down the cells of the potato. Osmosis is the diffusion of a solvent through a semi-permeable membrane‚ from a solution of low solute concentration to a solution with high solute concentration‚ up a solute concentration gradient. Net movement of solvent is from the less-concentrated to the more-concentreated.‚ which tends to redure the difference in concentrations. This effect can be countered
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26 Sept. 2014 Cell Phones in the Class Room Cell phones are great technical devices and important today in modern life‚ but they should not be allowed in the class room. Cell phone use should be saved for after class. They could be used for researching things for class but not while in class. Cell phones are distracting‚ can be used for cheating‚ and are even disrespectful to the teacher. Cell phones are a huge distraction to students and even teachers. A ringing cell phone can pause the
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features of this defense or system is the white blood cells. The White Blood Cells work to fight off any infection there is and have a memory function that remembers the disease to keep it away. A leukocyte‚ which is the formal name for white blood cells‚ protects the body in various ways from getting sick. The red bone marrow’s stem cells‚ which are called hemocytoblasts‚ are the source of creation for almost all of the white blood cells. Five types of white blood are carried through the blood
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Suddenly‚ stem cells are everywhere. Once relegated to the depths of esoteric health journals‚ the microscopic clusters have made their way to the nation�s front pages. The complexity and drama surrounding these relatively simple cells has increased due a ticking clock: By the end of the month‚ President Bush is scheduled to decide whether to continue federal funding for stem cell research. The question of using stem cells for research is intrinsically scientific‚ and yet has become the political
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Sickle Cell Anemia Sickle cell anemia is an inherited blood disorder‚ identified by the sickle shape of red blood cells which carry less oxygen and break easily‚ causing anemia. The sickling trait‚ the less serious form‚ occurs from the inheritance of only one parent; however‚ both parents must exhibit the disease in order for full symptoms to take place. It is caused by an error in the gene that tells the body how to make hemoglobin. The disorder is usually found in people of African descent
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lubrication Maintains body temperature Has high tension and cohesion Provides moisture Maintains osmoic balance and turgidity Saccharides : (a.k.a Carbohydrates) It is made up from Carbon‚ Hydrogen and Oxygen It is the main source of energy of cells. It can be divided into 3 groups – Monosaccharides‚ Disaccharides and polysaccharides. Monosacharides : They are known as simple sugars They cannot be hydrolysed/broken down into smaller units Eg. Glucose‚ Fructose‚ Galactose They are reducing
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http://www.wadsworth.org/chemheme/heme/microscope/lymphocytes.htm Vesicular Nuclei: euchromatin predominates; indicates high metabolic rate/active cell [DNA is extended = ready to be read] [purple areas = ribo of rER] http://www.vetmed.vt.edu/education/curriculum/vm8304/lab_companion/histo-path/vm8054/labs/Lab3/Examples/exvesnuc.htm [tumor cell with vesicular nucleus] http://archive.ispub.com/journal/the-internet-journal-of-laboratory-medicine/volume-4-number-2/bizarre-leiomyoma-a-close-
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|TOPIC: Uses of cell phones | | | | | | | | |A cell phone has a plethora of uses‚ and one of them includes |
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advancement is cell-phones‚ which is one of the greatest development in technology. We have become dependent on mobiles phones and it seem like a high percentage of the population including elderly people‚ young adult and even kids under 18 have one of this devices. There are numerous advantages and disadvantages related to cell phones. In one hand there is the importance of being communicated for emergencies‚ business‚ social and personal purposes. On the other hand‚ the usage of cell phone had become
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Voices From the Field Supporting Cell Phone Use in the Classroom Mark Geary ell Phone use is increasing‚ though it is still repressed more than accepted as an educational tool in US high schools. This article discusses how cell phones have been used in a charter school for at-risk students‚ as well as how and why they should be used on a broader basis. Also discussed are some future possibilities for cell phone use based upon the emergence of web 2.0 applications that support
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