Results: Limiting Reactant: Eq 1 Limiting reactant = Benzoin Theoretical yield of Benzil: Eq 2 Theoretical Yield Benzil | 0.296 g | Mass of Crude Benzil | 0.188 g | Mass of Final Benzil | 0.127 g | % Yield | 43% | % Recovery | 66% | Table 1: Mass of crude/final Benzil‚ % yield‚ and % recovery Percent Yield: % Yield = (Final product/Theoretical product) x 100 Eq 3 = (0.127 g/0.296 g) x 100 = 43% yield Percent Recovery
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Introduction to Amino Acids and Protein Molecules In the following tutorial you are going to - View molecules with the help of molecular visualization software (Jmol) - Get an introduction to amino acids and protein molecules - Model amino acids and dipeptides with molecule kits - Use a data base (PDB) to view protein molecules (hemoglobin and myoglobin) - Inform yourself about sickle-cell-anemia To use all following links properly JAVA has to be enabled on your computer! Where appropriate
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Dear Dr. xxx‚ I was hoping you would be willing to write me a letter of recommendation. My name is John Smith‚ and I am a Junior majoring in Biology. I took your Microbiology 102 course in fall of 2011 and finished with an A in the class. I will be applying for a position on Dr. Allen’s cytology research team‚ and the application is due by December 3. While I was in your class‚ I became fascinated with the fundamental processes of life that happen on a cellular level. I am very interested in working
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Ashley Andino October 2‚ 2014 Evolutionary Relationships in Mammals For this scientific argument‚ the research question was Which of these mammals are the most closely related? At first‚ my claim had stated “The mammals with more similar traights and characteristics were the ones that were the most closely related.” As my group and I looked deeper into the data‚ we had analyzed the different mammals and ended up with a final claim which was “The elk‚ cow‚ Caribou‚ the Pallid bat‚ and big eared
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Kyle Ouellette Building 4 Biological Molecules Carbohydrates‚ Amino Acids‚ Nucleotides‚ Lipids Observe: 1. Carbohydrates (monosaccharides‚ disaccharides‚ polysaccharides)‚ Lipids (of many kinds‚ including‚ triglycerides‚ phospholipids‚ and steroids‚ such as testosterone‚ estrogen‚ and cholesterol)‚ Proteins (including enzymes‚ lipoproteins‚ glycoproteins‚ structural proteins‚ hormones‚ etc)‚ and Nucleotides ( nucleotides join to form nucleic acids‚ which‚ along with a sugar and phosphate
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Experiment 3: The preparation of acetaminophen (paracetamol) with thin layer chromatography (TLC) to monitor the reaction. Abstract: This experiment is to demonstrate the preparation of paracetamol and its properties. Reflux and filtration of 4-aminophenol and acetic anhydride formed the crude sample. Further analysis of dry white crystals were used to give quantitative measurements and a percentage yield of 46% was obtained. The overall conclusion is that the acetic anhydride reacted with the
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Test Biuret Test Reagents CuSO4 sol’n‚ diluted NaOH Test for Intact proteins and protein hydrlysates (at least tripeptide‚ 2 peptide bonds Result Pink to violet blue color Ninhyrin Test 1‚2‚3-indanetrione monohydrate or triketohydintene hydrate‚ ethanol Alpha- amino group (usually a general test for amino acids) Xanthoproteic Test Conc. HNO3‚ conc. NaOH For W‚F‚Y (aromatic except for H) Blue to blue-violet Oxidative decarboxylation color & deamination
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Roselle Public Schools Unified Lesson Plan Format Teacher: School: ACHS Date: 10/14 MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY Subject biology biology biology biology biology Time/Period 1-2‚3-4‚9-10 1-2‚3-4‚9-10 1-2‚3-4‚9-10 1-2‚3-4‚9-10 1-2‚3-4‚9-10 (CPIs) 5.3.12.A.1 5.3.12.A.1 5.3.12.A.1 5.3.12
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flipped). Percent yield of the crude product was 67.75%. (What does this percentage mean?) The IR spectrum of purified product identified the Arene strand of 2969.71 indicating C-H stretch. Ester which indicated a C=O stretch of a 1750-1735. Aliphatic amines showed an absorption band of 1217.62 indicating a C-N stretch. (This makes no sense‚ look at the molecule you have and relate the points. Furthermore‚ you need to compare your results to a literature source) An example of a practical application would
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Electrophoresis of Amino Acids Introduction: Electrophoresis is a separation technique based on the movement of charged ions under the influence of an electrical field. This technique is primarily used for the separation of amino acids and peptides on the basis of their charge. All amino acids contain ionizable groups that cause the amino acids‚ in solution‚ to act as charged polyelectrolytes that can migrate in an electric field. The amino acids with a net positive charge will migrate toward
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