Modern Day Example of Natural Selection – Antibiotic Resistant Bacteria Read pg 112 -113 & 275 – 277 of you text book. Use this information plus information from secondary sources to answer the following questions so you will have a case study on antibiotic resistant bacteria. In this case study you will need to show how an environmental change can lead to a change in a species. Note: this will also cover content in the Search for Better Health topic. 1. Outline the purpose of anti-biotics
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characteristics of any one soil type you have studied. (2009 Q18‚ 80 marks) In this answer I will discuss the characteristics of the Brown Earth soil. Brown Earth soils are known as a zonal soil as they developed as a result of the Cool Temperate Oceanic climate and the natural‚ mixed‚ deciduous vegetation of this climatic region. This climatic region is located between 30o and 55o North of the Equator. Brown Earths are the most common soil type in Ireland. Brown Earth soils have a number of characteristics
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Should Bacteria and Archaea belong to the same Kingdom? The main purpose of this essay is to find out if Archaea and Bacteria should be classified as two different Kingdoms or as a single one. As organisms‚ bacteria and archaea both are microscopic and prokaryotic (not possessing a true nucleus). These prokaryotes are very abundant on Earth and inhabit a wide spread of areas‚ including extreme ones. Both are an example of the most ancient living cells‚ which have appeared over 3.5 billion years
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understand what bacteria and viruses are and how they affect us. In your own words‚ describe what bacteria are: Bacteria are single celled organism that creates sickness in organisms Bacteria Basics: http://biology.clc.uc.edu/courses/bio106/bacteria.htm http://en.wikipedia.org/wiki/Bacterial_cell_structure Bacteria have three possible shapes. Name each shape and draw a picture of each. How do bacteria get their energy? Bacteria get their energy by the http://www.ucmp.berkeley.edu/bacteria/bacterialh
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microscopy‚ soil microbiology and bacterial growth. The main aim of laboratory work with Escherichia coli and soil sample was to introduce students to bacterial growth in pure culture and soil microbial flora. The experiment of bacterial growth in pure culture using optical density measurement‚ plate count and DAPI direct count‚ showed that Plate Spread method was more precise to understand bacterial population growth tendency and counting generation time. During laboratory work with soil sample were
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is a tool used in farming for initial cultivation of soil in preparation for sowing seed or planting. It has been a basic instrument for most of recorded history‚ and represents one of the major advances in agriculture. The primary purpose of ploughing is to turn over the upper layer of the soil‚ bringing fresh nutrients to the surface‚ while burying weeds and the remains of previous crops‚ allowing them to break down. It also aerates the soil‚ and allows it to hold moisture better. In modern use
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University of Phoenix Material Types of Soil Matrix The column on the left lists the soil features you must identify. The top row lists the soil types. Fill in the information for each soil underneath its column‚ including the group it belongs to‚ its characteristics‚ and two regions of the world in which it is found. Use the information in Ch. 4‚ Figure 4.12‚ and Table 4 in Visualizing Earth Science to help you complete the chart. OxisolsUltisolsVertisolsAlfisolsSpodosolsMolli
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The Erosion Process1. Water. Erosion from water typically occurs in the following ways. a. Raindrop Splash and Sheet Erosion. The first step in the erosion process begins as raindrops impact the soil surface. Raindrops typically fall with a velocity of 20-30 feet per second. The energy of these impacts are sufficient to displace soil particles as high as two feet vertically. In addition‚ the impact of a rainfall on a bare soil can compact the upper layer of soil‚ creating a hard crust that
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Lactic Acid Bacteria Amanda Perry Many persons are oblivious to the fact that when they consume certain delicious food products like yogurt‚ buttermilk or cheese‚ they are actually eating live bacterial biomass which has acidified the milk content and contains a mixture of bacterial slime layers. Perhaps it is a blessing that most people are unaware because when most hear the word ‘bacteria‚’ their first thought is of a microscopic unicellular organism that causes various types of diseases especially
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repositories of bacteria/microbes ⁃ borne sterile ⁃ microbe on all surface area of the body ⁃ sterile areas: eyes‚ brain‚ spinal cord‚ bones‚ kidney‚ internal organs ⁃ mutualistic relationship: we provide site and nutrient and microbes provide vitamin‚ aid in food digestion ⁃ division of microbial world ⁃ living component: organism ⁃ prokaryotic ⁃ nucleoid area ⁃ one circular chromosome ⁃ non-membranous organelle ⁃ cell wall: peptidoglycan ⁃ binary fission ⁃ bacteria simple‚ dynamic
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