Transgenic Animals: Ethical Issues and Benefits to Human Welfare Nowadays‚ breakthroughs in molecular biology are happening at an unprecedented rate. One of them is the ability to engineer transgenic animals‚ i.e.‚ animals that carry genes from other species. The technology has already produced transgenic animals such as mice‚ rats‚ rabbits‚ pigs‚ sheep‚ and cows. Although there are many ethical issues surrounding transgenesis‚ this article focuses on the basics of the technology and its applications
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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? Your answer: The urea was not able to diffuse through the 20 MWCO membrane because the molecular weight was too high. For a molecular weight of 60.07‚ a larger membrane would need to be used. The results opposed my prediction because the urea did not diffuse at all. I predicted that it would diffuse‚ but very slowly. 3. Describe the results of the attempts to
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the steps and procedures laid out for me. Results Experiment Results Predict Question: Predict Question 1: The molecular weight of urea is 60.07. Do you think urea will diffuse through the 20 MWCO membrane? Your answer : a. Yes‚ but very slowly. Predict Question 2: Recall that glucose is a monosaccharide‚ albumin is a protein with 607 amino acids‚ and the average molecular weight of a single amino acid is 135 g/mole. Which of the following will be able to diffuse through the 200 MWCO membrane
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Lab 1: Introduction to Science Exercise 1: Data Interpretation Table 4: Water Quality vs. Fish Population Dissolved Oxygen (ppm) 0 2 4 6 8 10 12 14 16 18 Number of Fish Observed 0 1 3 10 12 13 15 10 12 13 Questions 1. What patterns do you observe based on the information in Table 4? 2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water. 3. What would your experimental approach be to
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Restriction Fragment Length Polymorphism (RFLP) Restriction Fragment Length Polymorphism (RFLP) Definition Definition In molecular biology‚ restriction fragment length polymorphism‚ or RFLP is a technique that exploits variations in homologous DNA sequences. It refers to a difference between samples of homologous DNA molecules that come from differing locations of restriction enzyme sites‚ and to a related laboratory technique by which these segments can be illustrated. In RFLP analysis
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Beta-Mercaptoethanol separated the Hemoglobin subunits they ended up at 16‚000 Daltons marker and not at 64‚000 Daltons which is Hemoglobin’s molecular weight. Another band can be seen at 32‚000 Daltons marker‚ which was a dimer of Hemoglobin that didn’t separate. Another band can be seen around the 64‚000 Daltons marker‚ which is where BSA ended up. BSA has a molecular weight of 66‚000 Daltons‚ which makes sense on where the band was observed. Sources of error may have been due to human error in performing
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Identification of Mystery Plasmids Abstract Plasmids serve as important tools in genetics and biotechnology labs‚ where they are commonly used make many copies of a particular gene. The aim of this experiment was to identify three mystery plasmids based upon their characteristics; such as size‚ antibiotic resistance‚ lacZ profile and conjugative properties. The results obtained showed that plasmid number2 was the pDSK519 plasmid and its size was 26229.58 Bp. Plasmid pDSK519 also was found to be
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2:46. Liege. Marcos‚ Antoni (1936). Contribucio al coneixement de la flora balear Florula de cabrera I dels illots Proxims. Cavanillesia 8:44. Misra‚ A. et al (2010). AFLP markers for identification of Swertia Species (Gentianaceae) Genetics and Molecular Research 9(3):1535-1544. Pervaiz‚ M.H‚ Dickinson‚ M.G. and Yamani‚ M. (2006). Is digoxin a drug of the past? Cleaveland Clin.Med 73: 821-824. Rising ‚ S.E‚ Welch‚ J.M‚ Koo‚ J.M. (2006). Association of mortality Risk with high serum digoxin concentrations;
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Dye Red Dye 10 sec 1 cm 1cm 1cm 1cm 20 sec 2cm 2cm 1.5cm 2cm 30 sec 2cm 1cm 1.5cm 2.5cm 40 sec 2cm .5cm 1.5cm 2.5cm 50 sec N/C .5cm N/C N/C Molecular Weight Distance Traveled Speed of Diffusion Blue Dye 793g 20.00mm 600mm/hr Red Dye 496g 45.00mm 1350mm/hr Aloe Vera Gel Molecular Weight Distance Traveled Speed of Diffusion Blue Dye 793g 15mm 450mm/hr Red Dye 496g 25mm 750mm/hr 1. The red dye diffused faster in both materials. 2. Yes
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The Cell: Transport Mechanisms and Cell Permeability 1. Molecular motion: A and D 2. Velocity of molecular movement: B and C 4. Size of pores. Solubility in the lipid portion of the membrane and/or presence of membrane “carriers” for the substance(s). 5. Glucose- (a) move into the sac Albumin- (c) no movement Water- (b) move out of the cell NaCl- (a) move into the celll 7. Hypertonic- C- crenated Isotonic- B Hypotonic- A- hemolysis‚ bursting open due to swelling
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