Lenses by Annie Dillard Annie Dillard wrote on her experience with analyzing other forms of life. She inadvertently discovered that she and other human beings were not alone in the world. She described her different views of the world by either using a microscope‚ to see a world too small to see with the naked eye‚ or binoculars‚ to see a world that appears to be sightly never ending. Dillard recalls as a child obbessing over watching the algae in her “child’s microscope set”. She was so
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helps prove that evolution is real is molecular biology. Molecular biology helped Darwin a lot to find out if evolution is real. Molecular biology is the branch of biology that deals with the structure or function of proteins. One example might that roundworms share 25% of their genes with
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fluid is filtered by a special organ. Selectively permeable membranes remove urea or uric acid. Osmolarity is controlled by selective reabsorption/secretion. C 5 types of excretory systems: None in porifera‚ cnidaria Protonephridia in planaria & rotifers Metanephridia in annelids Malpighian tubules in terrestrial arthropods Kidneys (with nephrons) in vertebrates Protonephridia Have flame bulbs‚ tubules‚ and nephridopores. C Flame bulbs selectively filter body fluid to nitrogenous waste. C Fluid
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A planarian is free-living flatworm that lives in fresh water. Planarians are organisms that live in freshwater. Planarians are part of the metazoan phylum. Animals in the metazoan like jellyfish have the ability to regenerate (Raymond 511-512). Planarians are closely related to animals like jellyfish and starfish. These animals shared the same special ability to regenerate; starfish are able to regenerate their arm when it is cut off. Jellyfish are able to regenerate their stinger when cut off (Li
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Planarians A planarian is a small free-living flatworm. These flat worms are usually found under rocks in fresh water. They are part of the phylum Platyhelminthes and in the class Turbellaria. Planarians are usually zoophagous‚ they feed on small living invertebrates and decaying organisms found in their community. Some planarians could eat segmented worms‚ leeches‚ snails‚ and other small herbivores. Planarians may also be organisms that gain their food energy with the help of decomposing
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tropical diseases (Molyneux et al.‚ 2005). STHs are major public health problem especially in the developing nations. The species of soil-transmitted helminths that infect humans are concentrated in the developing world‚ and these include the large roundworm Ascaris lumbricoides‚ the whipworm Trichuris trichiura‚ and the hookworm Ancylostoma duodenale and (Hotez et al.‚ 2003). The disease burden depends on the regional ecological conditions and also on the local standards of the people (Ukpai et al.
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Bio 1 River Ecology Lab Report Ecology is the study of relationships between organisms and their environment which includes both physical and biological factors. Humans have a major influence on ecosystems and this is very important in the waterways of California. The American River has been influenced greatly by humans by mining for gold‚ pollution through humans themselves‚ and an immense amount of other things (Becker 1992). We tested the growth of bacteria in the water of the American
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This report will present the regenerating planarian. Planarians are tiny flatworms that live in freshwater. Planum means flat‚ which is how they got their name planarians. These teeny worms are generally hard to find considering how small they are. In fact‚ these creatures range from the size of 3 to 12 millimeters. Planarians are categorized as scavengers‚ they eat the decaying parts of dead animals. They have a tub where they are able to capture food and eat‚ which is called a pharynx. The Planarians
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also used for infections caused by Giardia lamblia and Trichomonas vaginalis. 12. Name and describe the modes of actions of the drugs used to treat tapeworms. Mebendazole and thiabendazole are broad-spectrum antiparasitic drugs used to treat roundworm infections. These drugs work in the intestine to inhibit the functioning of microtubules of worms‚ eggs and larvae. Inhibiting microtubules interferes
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Synopsis – Grade 9 Science Term II Chapter 1: Atoms and Molecules Law of conservation of mass: Mass can neither be created nor can it be destroyed in a chemical reaction. Law of constant proportion: A chemical substance always contains the same elements in a fixed proportion by mass‚ irrespective of the source of compound. Atom: The smallest particle which is the building block of matter. The symbol of the element is made from one or two letters of the English
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