primitive microscope (magnification = 266 x) Looked at everything from rainwater to tears saw swimming living cells (microbes) He called as “animalcules” MICROSCOPE INVENTORS Robert Hooke (1665) See non-living particles invents the term “cell” after viewing slices of cork through a very primitive microscope MICROSCOPE INVENTORS The discovery and early study of cells progressed with the invention and improvement of microscopes in the 17th century Light microscopy LIGHT MICROSCOPE
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There are two different main kind of cells, which are eukaryotic and prokaryotic. I will be informing you about the different types of eukaryotic organelles as well as which are membranous and which are not. Eukaryotic cells have quite a few organelles working inside of them. The Eukaryotic cells consist of several membrane-bound organelles which include the nucleus, plasma membrane, mitochondria, chloroplast, endoplasmic reticulum, lysosome, vacuole and cytoskeleton. The plasma membrane is created
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MULTIPLECHOICE SECTION INSTRUCTIONS: Read all instructions carefully. Please answer all questions. Each question is worth 0.5 points. The Multiple Choice section is worth 40 points. **Do not enter your answers here.** Type in the letter you select as the best answer on the Answer Sheet provided by your instructor. 1. Which of these would be a valid hypothesis? A) Human history is determined by a series of supernatural events. B) Humans should help in the conservation of
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SUMMARY REPORT IN Reporters: The Cell Theory The discoveries of SChlieden, Schwann, and vitchow are summarized into a guiding principle new called the cell theory, the cell theory states that: 1. All organisms are composed of one or more cells. 2. The cell is the basic unit of structure and function of all organisms. 3. All cells arise only from preexisting cells. The three statements that comprise the cell theory tell us that the cell is the basic structural, functional, and
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Genetic therapy vs Genetic enhancement (P282) The woman with the spiky hair recognized him and yelled at him, ‘Leave playing God to God’” One of the most controversial discussions there has been in genetics, is whether the use of genetic therapy or genetic enhancement are moral permissible or not. On one side, there is the genetic therapy which uses genetic research to cure an illness. In the novel ‘Sister’ by Rosamund Lupton, there is a big example of this, since the sister of the protagonist,
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2 AQA BIOL5: The synoptic essay AQA A2 Biology: Writing the Synoptic Essay by Dr Robert Mitchell CT Publications Copyright © Dr Robert Mitchell 2010 www.ctpublications.co.uk 0800 040 7901 Dr Robert Mitchell A catalogue record for this book is available from the British Library ISBN 978-1-907769-02-3 First published in May 2010 by CT Publications Copyright © Dr Robert Mitchell 2010 The right of Robert Mitchell to be identified as the author of this work has been
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of plants & animal cells are: * Mitochondria are where enzymes are, where aerobic respiration reactions take place. * Cytoplasm is a gel-like substance where anaerobic respiration takes place as some controlled enzyme reactions take place here. * Cell membrane is what controls what goes in and out of the cell as it acts like a barrier allowing water & gases to pass through easily. What does the bacteria cell consist of? * They have a simple cell structure of a circular
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prokaryotic cell. www.dtc.pima.edu a. Explain how the presence of a capsule may give a prokaryotic cell a survival advantage over those cells that do not possess a capsule. b. Name two other structures that may be found in a prokaryotic cell and state their imortance. c. Compare the structure of the ribosome and the organization of the nuclear material in the prokaryotic cell with those found in a typical eukaryotic cell. 3. The diagram below represents the fluid mosaic model of the cell membrane:
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photoautotroph and chemoautotroph Metabolism- aerobic and anaerobic Reproduction - Binary Fission rapid transverse cell division resulting to two equally sized daughter cells Habitat Ubiquitous Soil Water Air Living Organisms Pathogenicity Adhesion bacteria uses fimbriae to attach to surfaces ; sex pilus to attach to other bacteria Resistance increased by the type of cell wall, and presence of endospore, capsules, slime layers Toxin the lipopolysaccharide upper layer of Gram negative
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parent and results in identical cells. Scientifically speaking, one cell could be cloned, as well as organs, plants, even animals and perhaps humans. Just as varied, are the reasons to clone in the first place. The possibilities of cloning range from medical uses, personal uses, agricultural and livestock improvement to saving endangered species and more. The medical advantages cloning provides extend life, treat illnesses, and produce medications. Research into cell growth and genetics adds understanding
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