1. BIOLOGICAL CLASSIFICATION Aristotle’s classification - Aristotle was the earliest to attempt a more scientific basis for classification of organisms. - He classified plants into trees‚ shrubs & herbs and animals into two groups‚ those which had red blood and those that did not. Two-kingdom classification - In Linnaeus’ time Two Kingdom classification (Kingdom Plantae & Kingdom Animalia) was developed. Drawbacks of 2-kingdom classification Prokaryotes (Bacteria‚ cyanobacteria) and eukaryotes
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Virus A virus (from the Latin virus meaning toxin or poison) is a small infectious agent that can replicate only inside the cells of other organisms. Viruses are too small to be seen directly with alight microscope. Viruses infect all types of organisms‚ from animals and plants to bacteria and archaea. [1] Since the initial discovery of tobacco mosaic virus by Martinus Beijerinck
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Conclusion In our project we concluded the tobacco mosaic virus can be curable. The hypothesis explained that if we tried to find a cure for the tobacco mosaic virus then fruits and vegetables would not be harmed anymore. However‚ it has still not been proven because the experiment has not been conducted yet. If the experiment was conducted we would have infected a plant with the virus. Then we would try to stop from making the disease spread to the plant host. The project seemed feasible
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Viruses • Too small to see with a light microscope Chapter 10: Viruses Lecture Exam #3 Wednesday‚ November 22nd (This lecture WILL be on Exam #3) • Visible with electron microscopy • Not cells: no nucleus‚ organelles‚ or cytoplasm • Obligate intracellular parasites • Can only reproduce inside a living cell Dr. Amy Rogers Office Hours: MW 9-10 AM • Viruses are on the border between living & nonliving things • Have either DNA or RNA‚ never both • Often cause death of the host cell
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transformation. Plant scientists‚ backed by results of modern comprehensive profiling of crop composition‚ point out that crops modified using GM techniques are less likely to have unintended changes than are conventionally bred crops.[22][23] In research tobacco and Arabidopsis thaliana are the most genetically modified plants‚ due to well developed transformation methods‚ easy propagation and well studied genomes.[24][25] They serve as model organisms for
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English 103 November 7‚ 2012 Works Cited Bailey‚ William Everett. The Invisible Drug. Houston: Mosaic Publications‚ 1996. Print. William Bailey wrote this book on cigarettes with many views from doctors and other professional advisors to show the effects and complications from smoking cigarettes. This book had a lot of information from previous books the was further reviewed and more recent. However‚ because this book is from 1996 I used it for a place to start and find more information about
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and his colleagues purified various chemicals from pathogenic bacteria and showed that ________ was (were) the transforming agent. A) DNA B) protein C) lipids D) carbohydrates E) phage Topic: Concept 16.1 Skill: Knowledge 5) Tobacco mosaic virus has RNA
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1941. After graduating‚ Hillier spent most of his career at the Radio Corporation of America (or RCA)‚ discovering the principle of stigmator‚ which is used to correct astigmatism in a microanalyser‚ while being the first person to picture tobacco mosaic viruses and an ultra-thin section of a single bacterium. He often discussed the importance of needing to relate technology to the economy‚ mainly because he thought that technology played a large part in discovering and seeing today’s major social
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------------------------------------------------- Genetically modified crops Genetically modified crops (GM crops‚ or biotech crops) are plants‚ the DNA of which has been modified using genetic engineeringtechniques‚ to resist pests and agents causing harm to plants and to improve the growth of these plants to assist in farmers efficiency. Genetic engineering techniques are much more precise[1] than mutagenesis (mutation breeding) where an organism is exposed to radiation or chemicals to create
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Use the information presented in this module along with additional outside research to answer the questions: 1 Discuss the two methods of viral replication. The two methods of viral replication are done in animal viruses. The first method deals with DNA viruses and the second is RNA viruses. In the DNA virus‚ the viral DNA enters the nucleus of the host cell. Than it is transcribed into mRNA and leaves the nucleus into the cytoplasm. The early mRNA then translates into early viral proteins. The early
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