Viruses: Complex Molecules or Simple Life Forms? Viruses have been defined as "entities whose genomes are elements of nucleic acid that replicate inside living cells using the cellular synthetic machinery‚ and cause the synthesis of specialised elements that can transfer the genome to other cells." They are stationaryand are unable to grow. Because of all these factors‚ it is debatable whether viruses are the most complex of molecules or the simplest life forms. While the definition
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Classes of Organic Molecules The Molecules of Life -the critically important large molecules of all living things fall into 4 main classes: 1) _____________________ 2) _____________________ 3) _____________________ 4) _____________________ -macromolecules are ____________________‚ built from _____________________ -________________: a long molecule consisting of many similar or identical ______________ blocks linked by __________________ bonds -___________________: smaller molecules that serve as the
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Campbell’s Biology‚ 9e (Reece et al.) Chapter 5 The Structure and Function of Large Biological Molecules In Chapter 5‚ the principles of chemistry covered in earlier chapters are applied to the understanding of biological polymers and lipid membranes. The emphasis is on properly linking monomers and their polymers‚ and on the structural and functional diversity of the different polymer types. Particular attention is given to protein structure‚ because this is central to understanding subsequent
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and Molecules Basic units of EVERYTHING! Which of these is true? 1. “Atom” and “molecule” mean the same thing. 2. Atoms are made of molecules. 3. Molecules are made of atoms. What is the smallest structure in this list that can be seen with an ordinary desk microscope? 1. 2. 3. 4. Cells. Cell nucleus. Atoms. Chain molecules‚ such as proteins. Atoms In our model of scale‚ remember that the BB represented an atom. Electrons Hydrogen Helium Neutrons Protons As a class‚ identify the
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THE 5 KINGDOMS OF LIFE- the amazing diversity of living systems 1. the Monera The five-kingdom system of classification for living organisms‚ including the prokaryotic Monera and the eukaryotic Protista‚ Fungi‚ Plantae and Animalia is complicated by the discovery of archaebacteria. The prokaryotic Monera include three major divisions: The regular bacteria or eubacteria; the cyanobacteria (also called blue-green algae); and the archaebacteria. Lipids of archaebacterial cell membranes differ considerably
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Biological Molecules Introduction: Without carbon‚ nitrogen‚ hydrogen‚ sulfur‚ oxygen and phosphorus‚ life wouldn’t exist. These are the most abundant elements in living organisms. These elements are held together by covalent bonds‚ ionic bonds‚ hydrogen bonds‚ and disulfide bonds. Covalent bonds are especially strong‚ thus‚ are present in monomers‚ the building blocks of life. These monomers combine to make polymers‚ which is a long chain of monomers strung together. Biological molecules can be
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Designing molecules In order to understand the complexity and shape of an organic molecule you and your partner will be constructing a 3-D version of a selected organic compound. The project will have four parts: A blueprint of the molecule you will construct The molecule A legend explaining the structure of the molecule A paragraph explaining the importance of the molecule This project will count as one lab grade. A sample grade sheet is on the back. Some possible molecules: Caffeine
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1. I wish I’d had the courage to live a life true to myself‚ not the life others expected of me. This was the most common regret of all. When people realize that their life is almost over and look back clearly on it‚ it is easy to see how many dreams have gone unfulfilled. Most people had not honoured even a half of their dreams and had to die knowing that it was due to choices they had made‚ or not made. It is very important to try and honour at least some of your dreams along the way. From the
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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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BIOLOGICALLY IMPORTANT MOLECULES Abstract Compounds containing the element carbon‚ called organic compounds‚ are the most important substances that make up living organisms. There are thousands and thousands of different organic compounds. To identify the major types of organic compounds in living organisms ‚ several biochemical test were used . Introduction Organic molecules are those primarily made up of carbon‚ hydrogen and oxygen. The common organic compounds of living organisms are
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