Abstract Acid Rain has a lot of effects on living organisms and on the environment. This experiment has two purposes. One is to determine the acidity of rainwater in certain areas in the Philippines. Another purpose is to determine which type of area-urban or rural- is more subjected to acid rain. The experiment was done by first collecting rainwater from selected rural and urban areas. After the collection was done‚ the rainwater samples were tested using a pH meter. The results of the pH test
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Modified Winkler Method for Dissolved Oxygen Determination Tiffany T. Lee Department of Biological Sciences‚ College of Science University of Santo Tomas‚ Manila‚ Philippines 1008 Date of Submission: February 17‚ 2011 Abstract In this experiment‚ the Winkler Method was used to measure the dissolved oxygen (d.o.) in a water sample from the pond in the Arch of the Centuries which had the owl statues. Then‚ the amount of oxygen is determined through a series of reaction. Usually‚ Winkler
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Preparation of template The surfactant modified alumina template was prepared by precipitation method previously reported in literature []. Typically‚ Precursor solution and surfactant solution were prepared by dissolving required amount of aluminium nitrate nonahydrate and sodium dodecyl sulfate in distilled water. Molar composition ratio of both the aluminium precursor and surfactant solutions was taken as 4:1. Mixture was stirred for 15 minutes at room temperature then precipitation was carried
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GMOs‚ or genetically modified organisms‚ have been a minor but relevant issue since they became popular. They exist almost everywhere in America‚ but countless people continue to debate whether they should remain. Andrew Pollack’s article “Genetically Engineered Crops Are Safe‚ Analysis Finds‚” for instance‚ leans toward GMOs. In contrast‚ Danny Hakim’s “Doubts About the Promised Bounty of Genetically Modified Crops” gravitates against them. While exploring their perspectives of GMOs‚ the articles
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How microscopes have contributed to our understanding of living organisms There are 2 types of microscopes these are; light microscope and electron microscope. Light microscopes use a beam of light however the resolution is lower than the electron microscope so the image is not clear‚ however they can view living organisms. These types of microscopes are used in schools to view simple cellular structures‚ which is good to teach simple biology Mitosis and meiosis can be seen with light microscopes
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Environment Influences the Body Plans of Organisms Amanda Taylor South University Online Instructor Gaske April 16‚ 2012 “From tiny viruses and bacteria‚ unrecognized for millennia‚ to blue whales weighing 200 tons‚ and fungi that spread for hundreds of hectares underground‚ the diversity and extent of life on Earth is dazzling. In its life and reproduction‚ every organism is shaped by‚ and in turn shapes‚ its environment. Ecological scientists study organism-environment interactions across ecosystems
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Marine organisms: Potential source for drug discovery. Life has originated from the oceans that cover over 70% of the earth’s surface and contain highly ecological‚ chemical and biological diversity starting from microorganisms to vertebrates. This diversity has been the source of unique chemical compounds‚ which hold tremendous pharmaceutical potential. New trends in drug discovery from natural sources emphasize on investigation of the marine ecosystem to explore numerous complex and novel chemical
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respiration‚ and cell division. One molecule of ATP contains three phosphate groups‚ and it is produced by ATP synthase from inorganic phosphate and adenosine diphosphate (ADP). ATP is used is many organisms and also in different ways. Below are a few ways in which ATP is used. When muscles contract in any organism‚ it means muscle fibers are generating tension with the help of motor neurons. ATP is the source of energy that allows this to take place. Voluntary muscle contraction is controlled by the central
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I have been running since I started Modified Track and Field in the seventh grade. Running has been a part of my life ever since then. When I decided to join track I felt as though it was the worst mistake that I could have ever made‚ simply because i did not like running as a child. After trying it for the first year and not giving up I enjoyed it very much and that is when I stated that I would continue to run track till I graduated high school. Then came ninth grade and not only did I continue
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that the living cells and organisms use to maintain life. It also divides into two categories: Catabolism – that breakdown the molecules to obtain energy and Anabolism – that creates all of the compounds that the cells need to function. Nutrition is an important part of the availability of nutrients that utilized in the reactions that either synthesize or catabolize the material that is employed by the cells to produce power. This power is a requirement by the organism to synthesize proteins and
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