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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require more efficient sources of power. At the forefront of research for these power sources are hydrogen fuel cells. This power source takes in the most abundant element in the universe‚ Hydrogen‚ and yields immense power without combustion or pollution. The three aspects of this scientific breakthrough are the fuel cells‚ hydrogen production‚ and hydrogen storage. Fuel cells are the devices with which Hydrogen is made into electricity. These use a technology much similar to that of something
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principles to ask relevant questions about the natural world • make observations and discriminate between scientific and pseudoscientific explanations 1. Select one of the following topics below. 2. Find articles related to the topic. 3. Write two pages‚ double spaced‚ excluding references. You must read the articles that you find and summarize the information they contain briefly in your own words. Extensive quotes from the article are discouraged. This assignment demonstrates the acceptable
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Points‚ and Plan “Should regulations regarding the use of cell phones while driving be standardized?” On December 13th 2011‚ the National Transit Safety Board called for a complete ban on cell phone use while driving‚ arguing that even hands-free phone use was distracting and dangerous. However‚ two weeks later‚ U.S. Secretary of Transportation‚ Ray LaHood‚ said he would not endorse a ban. His justification was simply that hands free cell phone use was “not the big problem in America”‚ which in my
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to a phone that could be taken virtually anywhere. He called it the cell phone. The cell phone today doesn’t share anything more than its name with the original Cooper model from 1983. However‚ the cell phone remains just as much of a groundbreaking device that divides people in very powerful ways. There are some who strongly back the product and those who stand strongly against it with very valid reasons. At times‚ the cell phone serves as a powerful communication device for humans and as a
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Diffusion in Cells Isabel Zak Question: How does the size of a cell affect the distribution of chemicals throughout the cell? Hypothesis: The larger the cell is‚ the more difficult it will be for the chemicals to reach the centre of the cell‚ and diffuse throughout it. This is because there will be a higher surface-area to volume ratio in the larger cells‚ making the centre of the cells further away from the surface. Therefore‚ when dipped in sodium hydroxide‚ the larger cells will not be
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Stem cells. To be or not to be It is one of the most evocative phrases in the lexicon of science: stem cells research‚ the creation of cells that can be used to make people healthier‚ stronger and even can treat cancer – the greatest killer of our time. Stem cells have been touted as one of the most significant discoveries in medical history! The ongoing research in this field hold high hopes that in a few years stem cells used in genetic therapy may be able to cure or alleviate the suffering
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Meiosis 1. What does it mean when two sets of chromosomes are homologous? It means that each of the four chromosomes that come from the male parent has a corresponding chromosomes from the female parent. 2. Highlight the letter of each way to describe a diploid cell. a. 2N b. Contains two sets of homologous chromosomes c. Contains a single set of homologous chromosomes d. A gamete 3. Highlight the letter of the number of chromosomes in a haploid cell where 2n=8 . a. 8 b. 4 c. 2 d. 0
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Sickle Cell Anemia Sickle cell anemia is an inherited blood disease. The word anemia is defined as meaning that the blood does not have the required number of red blood cells. These cells take on a crescent shape‚ which is where the disease takes its name from the abnormal sickle shapes of the cells. It is commonly found in people from Africa‚ the Mediterranean region‚ southern India and the Middle East. “This disease of the blood was first discovered in 1910 in a black college student from the
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Cell Phone Technology The cell phone technology that is ever changing by the day was scientifically invented and born back in the early 1980’s. Science was the main key to the birth of the cell phone which was put together by the Motorola Company who today is still making cell phones. Before the cell phone came out the car phone was the first mobile phone which were very large and had to be hooked up to a briefcase which supplied the power for the mobile phone. Science was the utilized to create
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