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Adenine Essay Topics & Paper Examples

Onion DNA Extraction

DNA(deoxyribonucleic acid) is found in every living organism. It provides the information and instructions to build and regulate cells in organisms. The information it contains is used when organisms are being reproduced. It is made up of two polynucleotide chains known as DNA strands. Within the two chains there are four nucleotide units: adenine, thymine, cytosine, and guanine. Materials and Methods An onion was cut into pieces and placed in a blender with 50 mL of water and blended for one minute. Once blended, 20 mL of 25% saline solution and 10 mL of liquid detergent was added to the mixture and blended for 3 minutes. The mixture was then added to a flask and placed into a bath of…

Beer’s Law Problem Set

Beer’s Law Problem Set Spring 2013 1. Calculate the absorbances corresponding to the following values of the percentage of transmitted light: (Provide your final answer with three decimal places) a. 95% b. 88% c. 71% d. 50% e. 17.5% f. 1% 2. A solution of a compound (1.0mM) was placed in a spectrophotometer cuvette of light path 1.05cm. The light transmission was 18.4% at 470nm. Determine the molar extinction coefficient. Include units in your answer. 3. The molar extinction coefficient of reduced NADH (nicotinamide adenine dinucleotide phosphophate) at 340nm is 6220 L/mole·cm. 3ml of solution containing 0.2 micromoles of NADH were placed in a cuvette of 1.05cm light path. Calculate the percentage light transmission of this sample at 340nm. 4….