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    Biology Chapter 4 Questions

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    Biology SL – Chapter 4 questions Page 57 1. a) Difference between protein and polypeptide: Proteins have a structure formed by one or more polypeptide chains whilst a polypeptide is a chain of amino acids. b) Fat and oil differences: They are both lipids‚ but fats are solid whilst oil are liquids. c) Difference between starch and glycogen: Starch is a polysaccharide found in plant tissue whilst glycogen has polysaccharide found in animals. d) Condensation and hydrolysis:

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    consisting of a carbon bonded to three hydrogen atoms. The methyl group may be attached to a carbon or to a different atom. • Macromolecule: a giant molecule formed by the joining of smaller molecules‚ usually by a dehydration reaction. Polysaccharides‚ proteins‚ and nucleic acids are macromolecules. • Polymer: a long molecule consisting of many similar or identical monomers linked together by covalent bonds. • Monomer: the subunit that serves as the building block of a polymer. • Condensation (dehydration)

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    Ezh2 Lab Report

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    (Lysine) and is encoded by EZH2‚ the EZH2 gene encodes part of the Polycomb group which make protein complexes that help to maintain genes transcriptional repressive state over successive cell generations. http://www.ncbi.nlm.nih.gov/gene/2146 Throughout this lab report template DNA that contains the gene EZH2 was provided‚ this will be amplified by a PCR and cloned into a vector. This Polycomb group proteins help maintain the cell identity during progress through chromatin

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    Gene Report 3

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    Sequence ID/Fragment Code: 6649013 Answers: 1. Identify the gene from which the query sequence originates (Name of gene) - Homo sapiens interleukin 2 receptor‚ gamma (severe combined immunodeficiency (IL2RG)‚ mRNA - See Appendix 1 2. Provide the full protein sequence encoded by the gene. - >gi|4557882|ref|NP_000197.1| cytokine receptor common subunit gamma precursor [Homo sapiens] MLKPSLPFTSLLFLQLPLLGVGLNTTILTPNGNEDTTADFFLTTMPTDSLSVSTLPLPEVQCFVFNVEYM NCTWNSSSEPQPTNLTLHYWYKNSDNDKVQKCSHYLFSEEITSGCQLQKKEIHLYQTFVVQLQDPREPRR

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    Biology Questions

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    think stop and start codon signals are necessary for protein synthesis? These are necessary because start codons tells the tRNA to begin translating the codons into proteins and stop codons tell the tRNA to stop translating codons into proteins. They are essential in the process of producing proteins. 6. Describe the processes of transcription and translation in your own words‚ based on what you have observed in the Gizmo. Transcription: Protein synthesis process starts in the nucleus where DNA

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    BIOL130

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    B I O L O G Y 130 INTRODUCTORY CELL BIOLOGY LECTURE NOTES Department of Biology University of Waterloo Fall‚ 2012 BIOL 130 LECTURE NOTES Fall‚ 2012 a Lecture Notes This booklet contains the notes that will be presented as part of the online modules. For copyright reasons‚ the figures that will be shown along with the notes cannot be reproduced. However‚ most of these figures come from the required course text‚ Cell and Molecular Biology: Concepts and Experiments‚ 6th edition

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    membrane structure. Inside the bilayer hydrophobic portions of proteins and phospholipids because the inside of the bilayer is nonaqueous. the proteins bob in the fluid bilayer of phospholipids. The proteins also vary in structure and function. There are teh integral proteins; transmembrane proteins with hydrophobic regions that cover the hydrophobic interior of the plasma membrane. There is also the peripheral proteins‚ they are not embedded in the membrane‚ but they are attached

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    translucent grease mark on a brown paper bag. The objective for the Dye test was to test for lipids. When mixed with water and the tested substance‚ a positive result will occur in it being separated from the water. The objective of the Protein Test was to test for proteins present in a substance using the Biuret Solution. The substance should produce a violet color within 10 drops of Biuret. The objectives of the Spit Lab were to test for starch‚ a reducing sugar‚ and effect of amylase on a cracker that

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    Essay On Macromolecules

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    A macromolecule can best be described as an immense molecule‚ made up of thousands of covalently bonded carbon atoms. There are four classifications of macromolecules: carbohydrates‚ lipids‚ proteins‚ and nucleic acids. Each classification performs specific functions that allow cells to grow and survive. Macromolecules can be either split or bonded through dehydration synthesis or hydrolysis. Dehydration synthesis occurs when water is released‚ electrons become shared‚ covalently bonding two

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    Lab Report

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    Tissue Homogenates of Bos taurusMaterials and Methods The homogenates provided were made by homogenizing tissues in a sucrose phosphate buffer in a 1:20 ratio. The protein concentration in bovine cells was measured by diluting the homogenate with a 1:5 ratio; 50 microliters of homogenate and 200 microliters of water. Then 5 known protein concentration samples which were 0.4‚ 0.8‚ 1.2‚ 1.6‚ 2.0 mg/ml of bovine serum were used to determine absorbance with a spectrophotometer. Two additional samples

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