put together make the structure scientists see under the microscope discovered by James D Watson. The structure is two helical chains coiled around the same axis. It’s two long strands twirl around like vines on each other in the shape of a double helix. The nucleotide repeats which is a base linked to sugar and one or more phosphate. The back bone of most DNA strand is made form is made from phosphate and sugar resides. Phosphate is a inorganic chemical that is a sale of phosphoric acid they are
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DNA polymerase attaches to DNA nucleotides‚ and it assembles nucleotides to the half existing strand. Ligase (an enzyme) forms covalent bonds between adjacent segments of the newly created DNA strands stitching up the gaps. Last‚ it re-winds the helix. (Gyrase) 2. Explain the relationship between chromatin‚ chromosome‚ chromatid‚ and centromere. Chromatin: DNA + Protein. DNA and associated proteins in the nucleus. Chromosome: Genetic material of cell (genome). It is made out of chromatin
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Brandon Schmetterer 3-13-15 Biology labs DNA Extraction Lab DNA is extracted from humans for genetic testing‚ for body identification‚ and for analysis of forensic evidence. The first step of DNA extraction is to take cheek cells from the test subject. Next‚ the cells must be burst open in order to release DNA. Third‚ DNA is separated from protein and debris. Lastly‚ the DNA must be isolated. A buccal swab is necessary in order to collect the cheek cells .The micropipettes are used to add lysis
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in the nucleus. 6. Understand that DNA contains repetitive sequences and that only a small proportion constitutes genes. Appreciate the role of repetitive sequences in DNA technologies such as DNA profiling. 7. Describe the Watson-Crick double-helix model of DNA structure and the base pairing rule. Explain the importance of complementary base pairing to the conservation of the base sequence in DNA. Contrast the structure and function of DNA and RNA. 8. In more detail than #7 above‚ describe
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BLUEPRINT OF LIFE: CHAPTER 2 GENETICS Gregor Mendel’s experiments helped advance our knowledge of the inheritance of characteristics 2.1 GREGOR MENDEL AND THE BIRTH OF GENETICS Gregor Mendel (1822-84) – ‘the father of genetics’ Born in Austria He was an Augustinian monk He worked as a teacher and as an investigator He observed the growth of peas He recorded the ratios of characteristics that appeared in the offspring His discovery stated he observed a pattern in the inheritance of characteristics
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from Wheat Germ Cells Criteria to be assessed CE Introduction: DNA is the abbreviation for deoxyribonucleic acid. DNA is found in the nucleus of every cell & it stores the information that makes up living organisms. It is a double helix of 4 nucleotides. It contains a code that allows the body to make up proteins. The nucleotides are Cytosine‚ Guanine‚ Adenine and Thymine. (1) Wheat germ comes from wheat seeds. The ’ germ ’ is the embryo‚ which is the part of the seed that can
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Discuss why hydrogen bonding is essential for life Throughout biochemistry there are many bonds without which life as it is on earth today would not be possible. One of the most important bonds of these is the hydrogen bond‚ a weak chemical bond that is present in essential biological molecules such as water and polypeptides. A hydrogen bond is defined by Campbell and Reece as occurring when a hydrogen atom is covalently bonded to an electronegative atom but attracted to another electronegative
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and instruments. The thread also is used to transmitting power and motions for hundreds of years. Screw‚ inclined plane and the wedge are fundamentally related. A thread is the wrapping for the wedge around a cylinder in a spiral‚ thereby creating a helix or rudimentary screw. Today‚ threads are mass-produced by tops‚ dies‚ thread rolling‚ thread milling and grinding to exacting standards of an
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Int J Adv Manuf Technol (2011) 57:859–870 DOI 10.1007/s00170-011-3330-6 ORIGINAL ARTICLE Design of micro square endmills for hard milling applications Peiyuan Li & J. A. J. Oosterling & A. M. Hoogstrate & H. H. Langen & R. H. Munnig Schmidt Received: 10 November 2010 / Accepted: 5 April 2011 / Published online: 20 April 2011 # The Author(s) 2011. This article is published with open access at Springerlink.com Abstract In experiments of machining hardened tool steels (such as AISI H11‚ H13‚ and
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Investigation #4 Finding the second derivative and A‚ B Finding the equation of the line which passes through A and B Finding C and D‚ the other points of intersection Ratio of distance between CA‚ AB and BD Notice how if Therefore‚ the function will not have 2 points of inflection‚ thus will not be a Golden Quartic‚ and points A and B‚ the non-stationary points of inflection will be non-existent and hence‚ the distance between
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