eHistory of biotechnology From Wikipedia‚ the free encyclopedia Biotechnology is the application of scientific and engineering principles to the processing of materials by biological agents to provide goods and services.[1] From its inception‚ biotechnology has maintained a close relationship with society. Although now most often associated with the development of remarkable drugs‚ historically biotechnology has been principally associated with food‚ addressing such issues as malnutrition and famine
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ACTIVITY ONE- Cell Transport Mechanisms and Permeability: Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. Molecular weight affects the rate of diffusion because the bigger the size of the molecule the longer it will take to diffuse. Membrane size is another variable that affects the rate of diffusion because if the membrane’s pores are small it will take molecules longer to diffuse though it than if the pores were larger. Also‚ membrane thickness
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Genetic Transformation of Bacteria Abstract The transformation of bacteria was successfully carried out using a plasmid carrying a gene that codes for green fluorescent protein‚ which gives a signature green glow reminiscent of a jellyfish. This gene‚ however‚ is only active when the sugar arabinose is present. A gene coding for antibiotic resistance was also found within the plasmid and served as a means to verify that transformation had indeed taken place. The hypothesis was that the bacteria
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DNA. Every now and then‚ technology has been used in every aspect in our life. But we know that technology has its advantages and disadvantages. Recently it’s now being bounded with our DNA. DNA technology according to the book is a collection of molecular biology techniques which aims at manipulating the DNA of an organism for a useful end. It involves genetic engineering‚ cloning‚ DNA testing and other techniques and process which uses the DNA‚ genes‚ chromosomes and other parts of our body. It has
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(Last accessed January 27‚ 2006). Meldrum‚ D. R. 2000. Automation for genomics: Part 1‚ preparation for sequencing. Genome Research 10(8): 1081– 1092‚ August. Meldrum‚ D. R. and L. E. Kavraki. 2004. Robotics and robotics-inspired algorithms for molecular and cellular biology: diagnostics‚ genomics‚ proteomics. NSF Workshop on Status of Robotics in the United States‚ Arlington‚ Virginia‚ July 21–22.
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could be re-joined in the laboratory. Researchers were quick to recognize that restriction enzymes provided them with a remarkable new tool for investigating gene organization‚ function and expression. As the use of restriction enzymes spread among molecular biologists in the late 1970’s‚ companies such as New England Biolabs began to search for more. Except for certain viruses‚ restriction enzymes were found only within prokaryotes. Many thousands of bacteria and archaea have now been screened for their
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Answer: The rate of diffusion of molecules depends on how soluble they are. The rate of diffusion depends on the size of the molecule in general‚ small molecules would pass through a membrane faster than larger molecules. As temperatures increase‚ molecular movement increases. As the movement increases‚ so will the diffusion rate as the molecules spread faster and faster. The opposite would be true of colder temperatures. 3. Considering the osmosis lab‚ explain the relationship between fluid volume
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or molecule between the sides of the membrane 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? Since the chemical formula for urea is (NH2)2CO and its molecular weight is about 60. It will not diffuse through the 20 MWCO membrane because it does not ionize. 3. Describe the results of the attempts to diffuse glucose and albumin through the 200 MWCO membrane. How well did the results compare with your
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Biochemistry is a very interesting subject to study and eventually work in. From studying microorganisms to creating medicine to prevent alien viruses from infecting people‚ it has always been a fascinating subject to me. I became interested in this career because I was always interested in the science field. Ever since I was young‚ I always liked to experiment with different things. I found out about biochemistry by my chemistry tutor. In the first semester‚ I struggled with chemistry so I called
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We know the pressure will increase in the albumin beaker because it is more impermeable than glucose. The pressure in the beaker containing the albumin increased despite the increased concentration of glucose because albumin has a much greater molecular weight. Activity 4 1. Increasing the size of an opening allows more space for movement. For example‚ the more you open the nozzle of a hose the amount of water that comes out increases. 2. Powdered charcoal is too large to pass any of the
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