honor Theodor Escherich. E coli are normally harmless and are part of the normal flora found in the lower intestines of humans and healthy cattle. Some E. coli serotypes are known to cause serious food poisoning in humans. E. coli belongs to the phylum of Proteobacteria‚ it is in the class of gammaproteobacteria and the family of enterobacteriaceae. There are around 200 different E.coli serotypes. When stained‚ E. coli appears as gram-negative bacilli. It appears in pairs or singly. E. coli is non
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Ceratopsians and Pachycephalosaurs Around 144 million years ago‚ began the emergence of the Ornithischian dinosaurs during the cretaceous period and diversified into North America and Asia. Ornithischians were classified as having a hip structure similar to that of birds‚ although they are not the descendants of birds. Marginocephalians‚ meaning "fringed heads" are a group of Ornithischians that have a distinctive skull structure‚ consisting of a slight shelf or bony frill on the back of the
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1. Define analogous and homologous traits and provide an example of each. Animal classifications and the field that specializes in it is called taxonomy. Traditionally‚ organisms are categorized according to their physical similarities. This was the first systematic classification constructed by Carolus Linnaeus in the eighteenth century. Currently‚ basic physical similarities are considered‚ however‚ for these similarities to be of any help‚ they must reflect evolutionary descent. Furthermore‚
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under the Naja genus‚ which most cobra species are‚ they have their own genus Ophiophagus. Their Taxonomy: Ophiophagus Hannah belongs to the monotypic genus Ophiophagus. It is classified under the family Elapidae‚ order squamata‚ class reptilian‚ phylum chordate‚ kingdom animalia. They are the longest venomous snakes in the world; their length is up to 18.5 to 18.8 feet (5.6 to 5.7 m). Their weight is Up to 20 lbs(9 kg). they can raise up to one-third of their bodies straight off the ground and
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the Spotted Eagle ray is in the kingdom of Animalia (en.wikipedia.org/wiki/Eagle_ray). It is a multicellular organism that is motile‚ which means they can move independently the eagle ray is an animal (en.wikipedia.org/wiki/Animal). The eagle ray’s phylum is Chordate because it had a nerve cord during development and it has a spine.(http://marinelife.about.com/). The class is Chondrichthyes because it is a cartilaginous fish which is related to sharks‚ skates and of course other rays as they all are
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EVOLUTION QUESTIONS 1) How do we distinguish a scientific hypothesis from a non-scientific one? • A scientific hypothesis is one that can be proven or disproven through tests and experiments. 2) What are the main ways in which Darwin’s theory differs from Lamarck’s? • Darwin’s theory supports the idea that a species can evolve by passing on the best traits of the fittest individuals to the next generations. Lamarck’s theory suggests that each individual within a species has a tendency to make efforts
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SCI 2020 Study Guide for Exam 1 on September 14‚ 2012 Ch. 14 How did reading books by Lyell and Malthus influence Darwin’s development of the theory of evolution? - From Lyell‚ Darwin saw that species gradually changed over time o Example: the Finches - From Malthus‚ Darwin perceived the idea of natural selection o Survival of the fittest o Those species that possessed physical‚ behavioral or other attributes survived over those who didn’t
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HUMAN PARASITOLOGY EXAM 1 QUESTIONS 1) INTRO AND HOST PARASITE INTERACTIONS 1. What is a symbiosis? What is each participant in a symbiotic relationship called? What is a trophic interaction? Give some examples. 2. What type of dependency exists between the participants of a phoretic relationship? Does the phoront benefit from the relationship? 3. Explain commensalism. How does the commensal benefit? Can these organisms survive independently? 4. What is mutualism? Can these
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Life History of Animalia Chordata Mammalia Carnivora Felidae Panthera onca (Linnaeus‚ 1758) Kala Rene John BIO 1301 Biology of Animals Laboratory Fall 2013 Professor Jerry L. Farris Arkansas State University General Appearance Panthera onca is the largest feline in the New World (Seymour 1989). The felid is closely related to the leopard (Panthera pardus) in most senses but differs in many areas such as size. P. onca has a larger average body size‚ approximately 1.12 m to 1
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bacteria‚ bacillus communis coli. After the demise of Dr. Escherich the intestinal bacteria was then named Escherichia coli after the late doctor in 1919. The bacteria Escherichia coli are classified as follows. Domain- Bacteria Kingdom- Eubacteria Phylum- Proteobacteria Class- Gammaproteobacteria Order- Enterobacteriales Family- Enterbacteriaceae Genus- Escherichia Species- E. coli Escherichia coli is a heterotrophic bacteria that is most commonly found within the small intestines of humans
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