A particle starts with a velocity of 100 cm/s and moves with –2 cm/s2 acceleration. When its velocity be zero and how far will it have gone? Ans. 50s ‚ 25m m/s. After 7 a time interval ∆t‚ the velocity of the body is reduced by half‚ and after the same time interval‚ the velocity is again reduced by half. Determine the velocity (in ms–1 ) vf of the body after a time interval 3∆t from the moment when the constant force starts acting. Ans. 10 A certain constant force starts acting on a body moving
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Why are some pressure groups more successful than others? A pressure group is a group of people with specific aims and interests. Also known as interest groups‚ lobby groups or protest groups‚ they try to influence political decision makers such as MPs and councillors to influence local or national policy and/or legislation. They seek to do so‚ either to protect interests of members (e.g. Trade Unions‚ NUT) or promote a cause (e.g. Greenpeace or RSPCA). Not all pressure groups are as successful
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Transport System of Organisms Problems faced by Multicellular Organisms: a)Big size-the total surface area to volume (TSA/V) is decreased . Rate of diffusion of substances into and out of all body cells is low. b)Cells are often located far away from the external surface of the body. How multicellular organism overcome these problem? a)Have specialized structure to increase the surface area for the exchange of respiration gases. b)Have transport system to get gases respiration in and
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constantly finding ways to resists to antibiotics. For this reason‚ it is important to test and observe unknown organisms in the lab to continually improve the health and well being of society. The objective of this report was to first isolate a single colony of an unknown culture on a LB agar plate. From here‚ a slant was made and used for multiple types of testing in order to determine the identity of the unknown organism. The tests performed to identify the unknown organism included Gram Staining
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Are GMO’s are No or Go? There is much controversy over whether or not GMO’s‚ or genetically modified organisms‚ benefit us and should be allowed‚ or if they are more harmful and should be banned. Genetically modified foods are beneficial because they save money‚ have greater resistance to pests and viruses‚ and they can hold more nutrition than regular foods. One of the crops that have most widely been genetically modified is corn. Biologists can inject genes in the corn that make the corn resistant
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Hydrothermal Vents and its Organisms! A hydrothermal vent is a fissure in a planet’s surface from which geothermally heated water issues. Hydrothermal vents are commonly found near volcanically active places‚ areas where tectonic plates are moving apart‚ ocean basins‚ an hotspots Hydrothermal vents exist because the earth is both geologically active and has large amounts of water on its surface and within its crust. Common land types include hot springs‚ fumaroles and geysers. Under the sea
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Christy Atangana 703 Science HW “What is Natural Selection?” p. 104&105 Qs 1-4 (in the text) and 1-5 (after the text) 1. The evidence that shows that organisms have evolved throughout Earth’s history is the fossil record. The fossil record manifests that that there was change during the course of Earth’s history. 2. The reason why I think Lamarck’s hypothesis was proven wrong is because there was more evidence that proves it was wrong than right. In the beginning
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Natural Selection and Heritability: From Butterflies to humans Created for SPICE by Amy Non and Carmella O’Steen March 2007 Natural Selection Simulation Lesson 2 (as modified from Robert Gendron’s “Simulating Natural Selection” for Introductory Biology Lab College Course‚ Indiana University of Pennsylvania) Key Question(s): What is natural selection? How does natural selection change allele frequencies over time? Does natural selection work differently on large versus small populations
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Olivia Garvey Professor Elgren Society and the Environment April 22‚ 2014 Genetically Modified Organisms—Harmful or Beneficial? Genetic engineering in agricultural crops serves as an exciting route in future possibilities of food production. Several benefits result from this technology‚ where genetically modifying crops has the capacity to improve genes that provide better resistance to stress—whether it be resistance to pests‚ severe weather such as frost or drought‚ disease‚ or from chemical
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A Genetically Modified Organism is an organism whose inherited matter has been altered using heritable engineering techniques. It is basically a special set of technologies that alter the genetic makeups in organisms that vary‚ such as plants‚ animals‚ or bacteria. Combining genes from different species is known as recombinant DNA technology‚ and the outcome organism is known as genetically modified. Now the question lies‚ is genetically modified organisms needed to suppress hunger? In my opinion
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