Earth is believed to be about 4.5 billion years old).It explains how species are formed. 3‚500‚000‚000 years ago-First bacteria (prokaryotes) 2‚000‚000‚000 years ago-First cells with organelles (eukaryotes) 1‚000‚000‚000 years ago-First multicellular organisms: algae‚ seaweeds‚ sponges‚ jellyfish worms 500‚000‚000 years ago-First fish 450‚000‚000 years ago-First land plants and fungi 390‚000‚000 years ago-First amphibians‚ insects and reptiles. Much of the land surface covered in fern forests
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Damian Niebler Period 05 March 7‚ 2013 Topic F (Chapter 12) 1. a. The outside the target with: I. The lowest TB cure rate – Malawi II. The highest TB cure rate – Mauritius b. Percentage of all cases of TB in Benin that are cured is -40 positive negative 2%. c. Two reasons why countries should aim to be in the target zone: • High detection rate combined with high cure rate slows down spread of TB • High detection rate combined with
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biology * Behavioral * Ecology Evidence for evolution * Fossil record * Biogeography * Homoplasy * Selective breeding * Homologies * Experiment evidence of adaptation Fossil record * Complex organisms in younger rocks * Simple organism in older rocks Biogeography * Study of geographical distribution of extinct and modern species * Isolated continents Homoplasy (similar form- different origin) * Homoplastic- features are similar features not inherited
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Chapter 01 A View of Life 1. Organisms belonging to the same _____ would be the most closely related. A. kingdom B. phylum C. family D. class E. order 2. A university biology department wishes to hire a scientist to work on the relationships among the wolves‚ moose‚ trees and physical features on an island. If you were charged with writing the job description‚ you should title the position A. population geneticist. B. molecular biologist. C. community ecologist. D. organismal physiologist
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perform many other functions characteristic of living organisms. Its only function is to take over the cell’s replication machinery and use it to replicate new virus particles. This activity takes place at a frantic rate. Within an hour an infected cell can produce thousands of new viruses and in many cases the cell will be destroyed in the process. Since so many virus particles are produced by a single cell‚ a virus infection of a multicelled organism can rapidly destroy a great number of cells and thus
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Introduction The Cell Theory Cell is the basic unit of life. All complex organisms‚ including plants and animals are multicellular‚ made of numerous cells. These cells are cooperative and could not survive for long on their own. Thus‚ these cells are arranged into higher level of organization‚ forming tissues‚ and then forming organs‚ so that they can perform their specific function. In 1838 and 1839‚ Theodore Schwann enunciate The cell theory‚ said that‚ all living things are composed of cells
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1. Understand what is the same about all life‚ and what makes life diverse LOCS A. List the five characteristics all organisms on Earth share B. Explain why the first four are required for life C. Differentiate heterotrophs and autotrophs 2. Understand that energy to sustain life is derived from chemical potential energy LOCS A. Relate the distance of electrons from their protons to the concept of chemical potential energy B. Define exergonic and endergonic chemical reactions
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of life is the study of chemical substances and vital processes occurring in living organism. Biochemistry governs all living organisms and living processes. * Study of chemical processes in living organisms‚ including‚ but not limited to‚ living matter. * Biochemistry is the science dealing with the chemical composition and chemical reactions happening within‚ and between the living cells of all organisms. → The study of the chemistry behind biological processes and the synthesis
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fields like biomedical sciences‚ magnetics‚ optoelectronics‚ nanochips production‚etc. Nanoparticles are been commonly used in various drug therapies.Uptil now‚ pioneers from this field have atttained success of synthesising nanoparticles from micro-organisms like fungi‚ bacteria‚ yeast‚ etc. Nanowires and nanotubes can be prepared by extraction of this nanoparticles from their source. This study is concerned with extraction of intracellularly produced silver nanoparticles from the fungus Verticillium
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causes another to start or stop. D) While organisms are balanced‚ they are not unchanging. The term used to describe the balanced state is dynamic equilibrium. 1. Dynamic Equilibrium: A balanced state created by many small‚ opposing changes. II. Life Processes: All living things carry out the same basic chemical processes. Taken together‚ these processes make up an organism’s metabolism. A) Metabolism: All the chemical processes that take place in an organism. 1. Nutrition: Using nutrients for growth
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