physics‚ energy is an indirectly observed quantity which comes in many forms‚ such as kinetic energy‚ potential energy‚ radiant energy‚ and many others; which are listed in this summary article. This is a major topic in science and technology and this article gives an overview of its major aspects‚ and provides links to the many specific articles about energy in its different forms and contexts. The question "what is energy?" is difficult to answer in a simple‚ intuitive way‚ although energy can be
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SCI 207 Quiz Week 2 Quiz – correct response is marked with asterisk (*) 1. Question: A decrease in “food miles” will most likely increase the environmental impact of any given food. True False * Question 2. Which of the following statements about ground water is not true‚ according to your text? Underground aquifers hold approximately 99% of all the liquid fresh water. More than 75% of underground water has a replenishment time of centuries or more‚ making it non-renewable. Increased water
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Associate Program Material DNA Worksheet Answer the following in at least 100 words: 1. Describe the structure of DNA. DNA is a polymer‚ which is a chemical compound or a mixture of compounds consisting of repeating structural units. These repeating structures are created through polymerization. The monomer‚ meaning one part‚ units of DNA are nucleotides. Each nucleotide consists of a five carbon sugar‚ also known as deoxyribose‚ and nitrogen containing base attached to the sugar
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the simplest or chemical level and culminating with the highest level-the whole organism Chemical level – atoms (and their parts)‚ and combinations of atoms called molecures Cellular level – cells are the basic structural and functional units of life. Tissue level – tissue are groups of similar cells (and their intercellular material)‚ which work together toward a specific function. Examples include blood‚ muscle‚ nerves‚ ets mostly a common embryo group. Organ level – a structure composed
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Cell Respiration Respiration is the process by which organisms burn food to produce energy. The starting material of cellular respiration is the sugar glucose‚ which has energy stored in its chemical bonds. You can think of glucose as a kind of cellular piece of coal: chock-full of energy‚ but useless when you want to power a stereo. Just as burning coal produces heat and energy in the form of electricity‚ the chemical processes of respiration convert the energy in glucose into usable form. Adenosine
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Li‚ 1 2-16-13 Solar Energy: The Energy of the Future Our Earth’s resorvoir of resources seem to be limitless‚ but with the exponential growth of the human population; the need for efficient alternative energy sources is becoming urgent. Therefore‚ research companies and individuals are focusing on creating new energy systems. Fossil fuels are are depleting and becoming more difficult to obtain. The earth will face an energy crisis in the near future if humans are not careful with their consumption
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INTRODUCTION Photosynthesis All living things need energy to survive. The sun is our main source of energy but the energy provided by it does not directly provide us the energy we need to completely survive. In plants‚ they absorb radiant energy and convert it into chemical energy. This process is called photosynthesis. Photosynthesis can be considered the ultimate source of life for nearly all plants and animals by providing the source of energy that drives all their metabolic processes. In the
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The cell is the fundamental structural unit of all living organisms. Some cells are complete organisms‚ such as the unicellular bacteria and protozoa; others‚ such as nerve‚ liver‚ and muscle cells‚ are specialized components of multi-cellular organisms. Cells range in size from the smallest bacteria-like mycoplasmas‚ which are 0.1 micrometer in diameter‚ to the egg yolks of ostriches‚ which are about 8 cm (about 3 in) in diameter. Although they may differ widely in appearance and function‚ all cells
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rapidly. With early detection and proper treatment‚ melanoma has a high cure rate. Early detection and treatment are possible because melanoma typically begins on the surface of the skin. It develops when melanocytes are damaged‚ which causes these cells to grow uncontrollably. As melanoma develops where melanocytes occur‚ this cancer can begin on the skin‚ under a nail‚ and even in an eye or on a mucous membrane.The type of treatment a doctor will recommend to a melanoma sufferer depends on the stage
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[pic] Course Syllabus SCI 241 The Science of Nutrition Course Start Date: 2/14/2011 Course End Date: 4/17/2011 Please print a copy of this syllabus for handy reference. Whenever there is a question about what assignments are due‚ please remember this syllabus is considered the ruling document. Edited in accordance with University of Phoenix© editorial standards and practices. Main: This is the main forum for the class and
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