Calvin Williams Chapter 20 1. Advances in recombinant DNA technology allow scientists to work with smaller fragments of DNA‚ give them more tools to dissect and analyze DNA‚ and also allow for them to make many copies of a strand of DNA. 2. Restriction enzymes are made by bacteria to cut up invading DNA. They target specific base sequences in the DNA and then work to cut out those sequences from the DNA. 3. When a restriction enzyme cuts out a portion of DNA‚ it will sometimes leave a sticky
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AP LITERATURE OPEN RESPONSE QUESTIONS 2011: In a novel by William Styron‚ a father tells his son that life “is a search for justice.” Choose a character from a novel or play who responds in some significant way to justice or injustice. Then write a well-developed essay in which you analyze the character’s understanding of justice‚ the degree to which the character’s search for justice is successful‚ and the significance of this search for the work as a whole. 2010: Palestinian American literary theorist
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Biology Unit 2 Module 2 1.1: Explain the uptake of ions by active transport in roots; * Emphasize the role of the endodermis. Most plants secure the water and minerals they need from their roots. The path taken is: soil -> roots -> stems -> leaves The minerals (e.g.‚ K+‚ Ca2+) travel dissolved in the water (often accompanied by various organic molecules supplied by root cells).Less than 1% of the water reaching the leaves is used in photosynthesis and plant growth. Most of it is
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FRQS 1. A friend is diagnosed with major depression. Explain what major depression is‚ define the following terms and apply them to this situation: Major Depression (MDD) is a mental disorder characterized by episodes of all-encompassing low mood accompanied by low self-esteem and loss of interest or pleasure in normally enjoyable activities. a. A Psychiatrist is a medical practitioner specializing in the diagnosis and treatment of mental illness. In this situation‚ the psychiatrist may
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Monuments are an irreplaceable way in which individuals throughout the world commemorate the triumphs of heroes or disastrous events. When devising a monument‚ individuals often disregard three critical factors; the location‚ size and material of the monument. Location‚ size and material must be utilized in preciseness to obtain optimum success. The precision of where a monument is to be erected must be precise in order to gain maximum appreciation. In Riverside Park‚ Easton‚ Pennsylvania
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mechanisms that regulate cellular senescence‚ organismal ageing‚ and species-specific lifespan depend on a synergy of pathways that are multifactorial and extremely complex‚ though not yet completely understood. Recently‚ the development of new molecular techniques has elucidated‚ at least in part‚ the primary pathways involved in ageing. In parallel with the search to uncover the factors that control ageing is the endeavor to discover methods of extending lifespan‚ in hopes of living both youthfully
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Gregor Mendel’s Discoveries 1. Explain how Mendel’s particulate mechanism differed from the blending theory of inheritance. • Blending: parents genes mixed • Particulate: parents genes still retain identity\ The blending theory was that genetic material contributed by the two parents mixes in a manner analogous to the way blue and yellow make green. It predicts that over generations‚ freely mating populations will eventually becoming a uniform population of individuals. According to Mendel’s
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potential" (Ψ) is a measure of the free energy of water; pure water (which has a high amount of free energy) is arbitrarily assigned a water potential of zero; units pressure: MPa; can be positive or negative factors that determine plant water potential: 1) amount of solutes- increasing concentrations will lower the free energy (water potential); termed osmotic potential (ψs) 2) turgor pressure (ψp) in plant cell- positive pressure inside plant cells; increases free energy; loss of turgor = wilting
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AP Prompt for Scarlet Letter Many authors use contrasting places to represent different forces or ideas. This opposition helps enhance the works meaning and themes. In the Scarlet Letter by Nathanial Hawthorne the use of contrasting places such as the forest and the scaffold scenes to develop the characteristics of sin. The forest represents the freedom of sin‚ the scaffold represents the punishment of sin‚ and both locations are used to acknowledge the presence of sin. The citizens use the scaffold
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Hannah Bunker Mr. La Plante AP® English Language and Composition Fourth Hour 24 January 2017 Extended Response I: Reading with a Critical Eye Books are precious pieces that improve one’s knowledge and help define one’s personality by relating themselves to characters within the text. As Vladimir Nabokov said in Good Readers and Good Writers “The reader should identify himself or herself with the hero or heroine.”(Nabokov‚ 973) I always believed that by reading a book you become
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