Process of Diffusion and its importance in living organisms Diffusion is the movement of molecules or ions down a concentration gradient i.e. from an area of high concentration to an area of low concentration. For a diffusion system to be efficient‚ it should have a large surface area so that high amount of substances can be exchanged at a time. It should also have a thin membrane and a continuous supply of substances‚ as a thin membrane means that the diffusion pathway would be short‚ and the continuous
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life on other planets. Prokaryotes multiply by a means of asexual reproduction called binary fission. In binary fission‚ the cell simply needs to grow twice its size‚ and then it divides into two identical cells. Since prokaryotes are very simple organisms‚ and there is evidence of ancient extraterrestrial microbial
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Microbiology case study Spring 2009 Case Study On July 14th‚ a 26 year-old man developed severe nausea and bloody emesis. At a local hospital emergency room‚ he was treated with IV fluids and antiemetic medication and admitted for further observation. That evening he became disoriented‚ combative‚ and had difficulty breathing. On July 16th‚ he became hypotensive and hypoxic and was transferred to a specialty care facility for ventilator support. Examination revealed a temperature of 104
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Organism Physiology Paper Dolphins are one of the most familiar and unique marine mammals known to people and occupy all the major oceans and seas of the world. Some species are even known to live in larger river systems. Dolphins belong in the kingdom anamalia; phylum‚ corata; class mammalia; order‚ cetacean; sub-order‚ odonteceti; family‚ delphinidae; genus‚ delphinus; and species‚ delphis. Dolphins are believed to have a long evolutionary past dating back several‚ tens of millions of years
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My first source for evaluation is a secondary source that is an online article‚ “The Unknown Clara Bow”. This article was written by William Cramer on February 24‚ 1998. Cramer’s purpose of this article was to educate and inform those who are interested in learning about flapper culture and‚ more specifically‚ Clara Bow. Cramer contains detailed knowledge of Bow through many sources‚ which he has cited on his website‚ from authors and historians who have focused on the 1920s with credible references
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Characteristics can help to classify organisms apart. I.e. we can tell that a mammal (human)‚ a fish is different by seeing that fishes live in water‚ humans live on land. Fishes breathe underwater by their gills while the mammals (humans) breathe oxygen with their lungs. Another example could be how reptiles and birds are different‚ the most obvious is where the birds have feathers and reptiles have rough skin with no feathers. The last example is where the amphibians are cold-blooded‚ lay eggs
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Microbiology Archae are tiny microbes with no cell nucleus and membrane bound organelles. Originally thought to be extremophiles living in harsh environments‚ these creatures can live a range of habitats like oceans‚ soils and even salty lakes. Overall‚ these organisms are special and different from other life forms. The rise of archae is one of the main differences why scientist distinct it from other prokaryotes. In the past‚ archae was classified an archaebacteria‚ but now with better
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Define metabolism: The sum of all biological chemical reactions inside a cell or organism Differences in catabolism and anabolism: Catabolism is an enzyme-regulated chemical reaction that releases energy. Complex organic compounds such as glucose‚ amino acids‚ glycerol and fatty acids are broken down into simpler ones. The energy of catabolic reactions is used to drive the anabolic reactions. Anabolism is also enzyme regulated but requires energy for taking the simpler broken down components
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always more visible in aquatic environments such as streams‚ lakes‚ and marshes. Many lakes and rivers are already acidic without the effects of acid rain. Their pH levels go up to 6 and 8. Once a stream or lake has been affected by acid rain‚ the organisms living in the aquatic environment begin to die out. The solution to decreasing the amount of damages acid rain has on the environment is to lower the sulfur
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Microbiology Lecture Exam #1 Outline Chapter 1: Microbiology Introduction I. Microbiology Definition II. History of Microbiology (Christian Gram‚ Robert Koch‚ Antony van Leeuwenhoek‚ Robert Hook‚ Edward Jenner‚ Louis Pasteur‚ Elie Metchnikoff‚ Dmitri Iwanowski‚ Paul Ehrlich‚ Alexander Fleming) II. Scope of Microbiology A. Infectious Agents 1. Prions 2. Viroids 3. Viruses B. Prokaryotes
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