BIO 108 Take Home Chapter 26 Test Due: March 5‚ 2013 This test contains 11 questions‚ each worth 10 points. The highest possible score is 110%. 1. In your life‚ you probably have had before compared organisms and categorized them according to their common and distinct characteristic features. Through educational settings‚ you probably also have gained insights into similarities and differences between species. On the second page of this test‚ arrange the following species into your own phylogenetic
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Question 1 : The distribution of organisms in a community is affected by the biotic factors and abiotic factors. Abiotic factors are the non-living components in the ecosystem such as air‚ water‚ soil‚ temperature and light intensity. Biotic factors are the living components in the ecosystem such as animals and plants. In an ecosystem‚ the living organisms live together in their non-living environment and function as a unit. This dynamic system starts with species‚ populations‚ ecosystems‚ communities
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Organism Physiology Paper R. Steiner Principles of Biology Anette Griego “Humans and chimpanzees split around five million years ago. Ever since then‚ we (and they) have changed a bit to adapt to the different environments we invaded and created” (Gitig 2009). Organisms need to adapt both physiologically and anatomically in order to survive in changing environments. For example‚ Tibetans have developed genes to help them adapt to life at high elevation. While most humans would become very
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Department of Molecular & Cell Biology Course Code: MCB3019F Course Name: Recombinant DNA‚ genomics & proteomics Paper: 1 Date: 11 June 2008 No. of pages: 5 Marks: 110 Time: 3 Hours Venue: LS 2A ------------------------------------------------- Additional: Supplemental Figure Sheet Time: 12:30 p.m. ------------------------------------------------- ANSWER ALL THE QUESTIONS In the interest of economy please write on both sides of the exam script Please answer
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polyacrylamide gel as a support medium and sodium dodecyl sulfate (SDS) to denature the proteins. The method is called sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) where one can obtain information about the size of a protein or its molecular weight and yield or the total amount of the protein. This system is also called the Laemmli method after U.K. Laemmli‚ who was the first to publish a paper employing SDS-PAGE in a scientific study. SDS (also called lauryl sulfate) is an anionic
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Results and Discussions Cbes-AXE2 encodes a novel acetyl xylan esterase The CAZy database has grouped esterases acting on carbohydrates into 16 different families of carbohydrate esterases (CEs). AXEs (EC 3.1.1.72) acting on acetylated xylan are distributed in only 8 families – CE1-7 and 16. Among these‚ other than CE4‚ all other CEs belong to serine esterase and have the prototype catalytic triad Ser-His-Asp (Glu). Genralyy‚ the catalytic serine of the triad lies in a conserved motif of either
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Biology Chapter 1- A View of Life Key Concepts: 1.1 Basic themes of biology include evolution‚ information transfer‚ and energy transfer. 1.2 Characteristics of life include cellular structure‚ growth and development‚ self-regulated metabolism‚ response to stimuli‚ and reproduction. 1.3 Biological organization is hierarchical and includes chemical‚ cell‚ tissue‚ organ‚ organ system‚ and organism levels: ecological organization includes population‚ community‚ ecosystem‚ and
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surround the central atom. Electron domain can be described as a lone pair‚ single‚ double and triple bond‚ and also even free radical. Lone pairs tend to occupy a lot of space and lower the angle of a bond‚ which gives molecular geometry. Lewis structure help determine the molecular geometries‚ 3D structure‚ and distribution of electrons in order to understand the chemical properties of reactivity and molecules like texture and microstructure. One of the most important influences
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preparation. The molecular weight of the fibrinolytic protease was determined by comparison of the migration distances of standard marker proteins (Lysozyme 14.4 kDa‚ Soybean Trypsin Inhibitor 21.5 kDa‚ Carbonic anhydrase 31.0 kDa‚ Ovalbumin 45.0 kDa‚ Bovine Serum Albumin 66.2 kDa and Phosphorylase b 97.4 kDa). Depending on the relative mobility‚ the molecular weight of the protein band was calculated to be around 31 kDa. Thus‚ it was concluded that our fibrinolytic protease enzyme has a molecular weight of
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example of each of your calculations; - a final statement‚ including the number of repeats present in your D1S80 alleles. Observation Table 1: The distance traveled by each fragments of lambda DNA on basis of molecular weight. The last 5 fragments of 1kb gene ruler from smallest to largest Molecular weight of 1 kb gene ruler (bp) Log
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