Molecules of Life 4 Critical large Molecules- 1.) Carbohydrates 2.)Lipids 3.)Proteins 4.) Nucleic Acids -On the molecular scale‚ members of three of these classes--- Carbohydrates‚proteins‚ and nucleic acids--- are huge and therefore called Macromolecules. - Architecture of a large biological molecule helps explain how that molecule works. ---------------------------------------------------------------------------------------------------------------------------- Macromolecules
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Human Lice Anoplurans are parasitic arthropods. They are commonly referred to as "sucking" lice. Lice are highly host specific and many species prefer specific sites on their host’s body. They can not survive without a host; therefore‚ lice have developed many adaptations that help them stay in close contact with their host. There are three types of human lice: The head louse (Pediculus humanus capitas)‚ the body louse (Pediculus humanus humanus)‚ and the crab louse (Pthirus pubis).
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creatures still lived in water‚ but they had a lot of the terrestrial tetrapod anatomical characteristics. Introduction: Before tetrapods existed‚ all vertebrates were confined to living in aquatic habitats. The only animals that lived on land were arthropods. Through natural adaptations‚ the fish developed into amphibians. This colossal stage of change made necessary the evolution of new ways of breathing‚ locomotion‚ and reproduction. Paleontologists needed to understand how this transition took place
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The Warm and Cold Blooded Nature of Dinosaurs The debate of whether dinosaurs were cold blooded or warm blooded has been ongoing since the beginning of the century. At the turn of the century scientists believed that dinosaurs had long limbs and were fairly slim‚ supporting the idea of a cold blooded reptile. Recently‚ however‚ the bone structure‚ number or predators to prey‚ and limb position have suggested a warm blooded species. In addition‚ the recent discovery of a fossilized dinosaur heart
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The Ebola Virus History of‚ Occurrences‚ and Effects of Ebola‚ a virus which acquires its name from the Ebola River (located in Zaire‚ Africa)‚ first emerged in September 1976‚ when it erupted simultaneously in 55 villages near the headwaters of the river. It seemed to come out of nowhere‚ and resulted in the deaths of nine out of every ten victims. Although it originated over 20 years ago‚ it still remains as a fear among African citizens‚ where the virus has reappeared occasionally in parts
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Global warming is a major issue in society. It has entered political speeches‚ agendas‚ pop culture‚ and sparks scientific debate. Global warming has been said to be responsible for heat waves‚ the rise of sea levels‚ flooding‚ drought‚ malnutrition‚ water pollution‚ and spread of disease. There is proof that the Earth’s temperature has risen‚ but is that really a threat? According to Jonathon Patz‚ with the John Hopkins Bloomberg School of Public Health‚ and Sari Kovats‚ with the London School
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[pic] Marine biology is the scientific study of organisms in the ocean or other marine or brackish bodies of water. Given that in biology many phyla‚ families and genera have some species that live in the sea and others that live on land‚ marine biology classifies species based on the environment rather than on taxonomy. Marine biology differs from marine ecology as marine ecology is focused on how organisms interact with each other and the environment‚ and biology is the study of the organisms
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acres of savannas and wetlands and providing a sanctuary for much of tropical Australia’s savanna and wetland flora and fauna‚ as well as its cultural heritage. 204 species of birds‚ over twenty mammal species and a myriad of lower vertebrates and arthropods are a testimony to the environmental values of the
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West Nile Virus Summertime‚ without doubt is the best season for students‚ the mood that it brings along with it‚ is the time that most people treasure. However‚ as we go along and having wonderful time in this period‚ it is very important that we remain healthy and safe. The season not only brings the things we obviously expect‚ but also has been associated with viruses which can cause various diseases. People who enjoy themselves along the lakes and rivers should keep in mind of the threatening
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PATRICIA CASTAÑARES‚ JASON MIRANDA‚ CHRISTIAN NEEM (Azadirachta indica) OIL USED IN AN OIL BURNER AS INCENSE MOSQUITO REPELLENT INTRODUCTION Mosquitoes are well-known pests to the entire human race. Later in the 90s‚ they discovered that these arthropods are also carriers responsible for transmission of devastating diseases to mankind. They transmit diseases by feeding on blood from vertebrates‚ including us humans. As years gone by‚ many studied: the relationship between the mosquitoes and the
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