a lentivirus (slowly-replicating retrovirus) that causes acquired immunodeficiency syndrome (AIDS)‚ a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive (1). A virus is a piece of genetic material‚ RNA or DNA‚ surrounded by a protein coat. To replicate‚ a virus must infect a cell and direct its cellular machinery to produce new viruses. A virus cannot reproduce without infecting a cell. Viruses prey upon all living organisms‚ turning them into virus
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Biology- cell organelles assignment Animal cells: Introduction: An animal cell is called a eukaryotic cell; it has a cell membrane‚ cytoplasm and a nucleus. The cell surface is covered by a membrane only. The cell membrane is strong and keeps the cell together even though it is thin and flexible. The cell membrane also controls what goes in and out of the cell e.g. nutrients go in and waste comes out. The cytoplasm is inside the nucleus and it controls the cells activities. An animal is
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BIO EXAM 1 BUILDING BLOCKS Aminoacids->Proteins->Enzymes Glucose=Polysaccrides Glyseral=Fat Molecule Neoclotides= DNA & RNA CRITERIA OF LIFE: (5) A. Biology: What is it?: BIOLOGY: is the scientific study of life B. What is life? -- Criteria for life: All living organisms have similar properties -composed of cells made up of macromolecules -growth‚ development & reproduction -heritable information in the form of DNA -sensitivity to stimuli -homeostasis (maintenance of internal environment)
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An Introduction to Medicinal Chemistry GRAHAM L. PATRICK Department of Chemistry‚ Paisley University Oxford New York Tokyo OXFORD U N I V E R S I T Y PRESS 1995 Oxford University Press‚ Walton Street‚ Oxford OX2 6DP Oxford New York Athens Auckland Bangkok Bombay Calcutta Cape Town Dar es Salaam Delhi Florence Hong Kong Istanbul Karachi Kuala Lumpur Madras Madrid Melbourne Mexico City Nairobi Paris Singapore Taipei Tokyo Toronto and associated companies in Berlin Ibadan Oxford is a trade
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The Molecules of Cells (Chapter 3 in your textbook) Without water and carbon-based molecules‚ no life as we know it! Carbon: The Backbone of Life • Living organisms consist mostly of carbon-based compounds Also‚ H‚ N‚ O‚ P‚ and S…… • Carbon is unparalleled in its ability to form large‚ complex‚ and diverse molecules. Why? Principal source of carbon on Earth? • Proteins‚ DNA‚ carbohydrates‚ lipids‚ and other molecules that distinguish living matter are all composed of carbon. C21H36N7O16P3S Coenzyme
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A copy of this form must accompany all work submitted for marking (for work submitted by email it may be recreated as part of the file‚ with all of the information shown below to be included on the email version). Work will not be marked unless accompanied by a completed submission form. Thank you. Surname: First Name: Learner ID Number: Programme Teacher/Assessor: Assessment Title Unit Numbers: AUTHENTICATION DECLARATION This submission is my own work. I have made no use of printed
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Nutrigenomics – An emerging field of science and technology unrevealing inter-relationships between nutrients and human genome using modern tools such as Transcriptomics‚ Metabolomics‚ Epigenomics and Proteomics By Raffia Siddique‚ Hafsa Iftikhar‚ Rabia Ejaz‚ Tahira Karim List of contents Introduction to Nutrigenomics Emerging faces of nutrition‚ nutrigenomics and nutrigenetics Experimental Approaches and Technologies used in Nutrigenomics Metabolomics-newest tool for Nutrigenomics
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Differences in chromatin Differences in chromosomes Differential content of DNA Differential expression of genes 1-2 Which of the following structures is not normally found in the cytoplasm of a resting cell? DNA Messenger RNA (mRNA) Ribosomal RNA (rRNA) Transfer RNA (tRNA) 1-3 Which of the following cytoplasmic organelles are not found in most all nucleated cells? Endoplasmic reticulum Golgi apparatus Mitochondria Myofilaments 1-4 Which of the following is the primary purpose
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pancreatic beta cells. These beta cells are located in the pancreas in clusters known as the islets of Langerhans. Insulin is a small protein produced as part of a larger protein to ensure it folds properly. In the protein assembly of insulin‚ the messenger RNA transcript is translated into an inactive protein called preproinsulin. Preproinsulin contains an amino-terminal signal sequence that is required in order for the precursor hormone to pass through the membrane of the endoplasmic reticulum (ER)
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cyclohexamide as protein synthesis inhibitors. October 16‚ 2009 Introduction: In living cells‚ prokaryotic or eukaryotic‚ the synthesis (construction) of proteins is accomplished by similar machinery. Amino acids‚ ribosomes‚ messenger RNA (mRNA)‚ and transfer RNA (tRNA)‚ are all necessary for the building of functional proteins in a cell. Ribosomes are the site of protein synthesis in a cell‚ and there are two different types‚ depending on the type of cell. Only the 70S ribosomes are found
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