The upper most strand is the (coding strand) DNA base sequence (triplet) of the gene codes for synthesis of a particular polypeptide chain. The second strand is the mRNA base sequence (template strand used for copying) codon of the transcribed mRNA. The process for going from the upper stand to the second strand is called Transcription and involves an enzyme called polymerase. The polymerase attaches to the promoter region (start codon) and reads the nucleotide base sequence until it gets to a termination
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Cell Membrane Permeability and Osmosis Experiment 3 Objectives: To demonstrate the mechanism involved in Osmosis; To demonstrate the tonicity of solutions by subjecting the cells to different concentration of solute. To view‚ under the microscope‚ any change in the shape and volume of the cells after subjecting them to different concentrations of solutes; To demonstrate the permeability of cell membrane by subjecting the cells to different solutes; To demonstrate the mechanism involved in
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2014/15 Module name and number Molecular Biology & Genetic Engineering: BS941 Assignment title “DNA sequencing: where we are and where it’s going” Student Number 1464986 Word Count 2310 The article focuses on the advances achieved in DNA sequencing by first providing a brief background on DNA‚ and how it was initially sequenced. The paper then takes into consideration four of the major DNA sequencing techniques. These include: Sanger’s Chain Termination Method‚ Pyrosequencing‚ Single Molecule
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DNA Replication at the Biochemical Level 3 5 7 3 5 4 3 10 5 12 11 1 9 2 8 6 3 Overall direction of replication 5 (College‚ 2013‚ figure 6) 7 DNA Replication at the Biochemical Level (diagram key) 1. DNA 2. Replication fork. 3. Helicase‚ enzyme that unwinds the parent double helix. 4. Single-stranded binding proteins‚ stabilize the unwound parent DNA so they cannot reattach. 5. Leading strands‚ synthesized continuously in the 5’-3’ direction by DNA polymerase. 6. Lagging strands‚
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DOUBLES’ DELIGHTS Stacy smilingly approached the podium for her turn to speak at our annual tennis banquet. The team with families‚ and fans had gathered to celebrate the end of tennis season. After thanking her family‚ and the coaches‚ Stacy turned towards me‚ and with her voice quivering said‚ “You pulled me through.” There were tears in her eyes. “You were the best partner I could have‚ you lifted me up. I learnt to hold myself up. During the worst of times‚ you brought out the best in me. You
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Double Entry Journal #2 A double-entry journal is a type of extended annotation. There is not enough room in the book to put all of the information that you’d like to write. Since the double-entry journal is in a document‚ you can make your information as detailed as you’d like. Your goal is to choose quotes that represent at least all of the key ideas in the section. Then discuss any connections you made to those quotes or thoughts that you had while reading. An example is done for you below
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dealing with building a national DNA database. This issue has been brought up over the discussion of the actual database and what kinds of effects will come out of it‚ if it actually happens to go through. Some people think the database will be a force in crime fighting. Others think it is a violation of civil liberties. In the early 1900s‚ “fingerprinting‚” a new crime-fighting database‚ was developed. With the exception of identical twins‚ no two people have the same fingerprints. Every person
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determining paternity to name a few. DNA based techniques are a sub-discipline of forensic biology and are a crucial component in this field of work. DNA analysis began in the mid 1980’s and revolutionised the field of forensic science. With continual refinement of DNA analysis methods in crime laboratories over the years‚ small amounts of blood‚ saliva‚ skin cells and other biological material can now be used to develop leads and confirm or disprove an account of the crime. DNA (deoxyribonucleic acid) is
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Cell Membrane The Cell Membrane- The cell membrane is a semi-permeable membrane that surrounds the cytoplasm of a cell; the cell membrane is made up of phospholipids‚ proteins and carbohydrates. Its function is to protect the integrity of the interior of the cell allowing certain substances into the cell‚ while keeping other substances out. The phospholipids form a thin‚ flexible sheet while the proteins float in the phospholipid sheet like an ice berg‚ and the carbohydrates extend out from the
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Uniform Circular Motion – a constant motion along a circle; the unfirom motion of a body along a circle Frequency (f) – the number of cycles or revolutions completed by the same object in a given time; may be expressed as per second‚ per minute‚ per hour‚ per year‚ etc.; standard unit is revolutions per second (rev/s) Period (T) – the time it takes for an object to make one complete revolution; may be expressed in seconds‚ minutes‚ hours‚ years‚ etc.; standard unit is seconds per revolution
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