two subunits. ____ 4. Protein is made up of a long chain of amino acids. ____ 5. Down syndrome is an example of a chromosomal disorder. ____ 6. Lipids are a large class of hydrophilic molecules. ____ 7. DNA is most often described as a single helix‚ which looks like a spiral rope. ____ 8. The pancreas produces bile to be used in fat digestion. ____ 9. An open circulatory system is more efficient in delivering oxygen to cells than a closed circulatory system. ____ 10. Diffusion moves solutes
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Cell Cycle and Mitosis THE CELL CYCLE The cell cycle‚ or cell-division cycle‚ is the series of events that take place in a eukaryotic cell between its formation and the moment it replicates itself. These events can be divided in two main parts: interphase (in between divisions phase grouping G1 phase‚ S phase‚ G2 phase)‚ during which the cell is forming and carries on with its normal metabolic functions; the mitotic phase (M mitosis)‚ during which the cell is replicating itself. Thus‚ cell-division
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the genetic martial (gene) for hereditary in humans and almost all other organisms.2 It is stored in a cell’s nucleus (nuclear DNA) and mitochondria (mitochondrial DNA.) It is composed of four nucleic acids which combine together to form a double helix strand of DNA. These acids consist of adenine (A)‚ guanine (G)‚ cytosine (C)‚ and thymine (T)‚ and can only go together in specific pairs which are A with T and C with G. The sequence of these acids are what determine the design for the building
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DNA is a double helix molecule that contains information that is used to make up a person’s body. DNA controls every aspect of a person’s body from their eye and hair color‚ height‚ and other features. DNA’s specific and unique characteristic can be crucial when solving a crime. DNA can be used to convict a suspect or exonerate an innocent person. When DNA is found it is even more important that is handle properly to ensure proper identification and accuracy of testing. The evolution of DNA technology
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ALICE LEE CENTRE FOR NURSING STUDIES NATIONAL UNIVERSITY OF SINGAPORE Topic 2: The impact of foetus birth defect on pregnant women’s psychological health and recommendations for clinical practice NUR1115 Maternal and Child Health Nursing Matriculation Number: A0108433M Bachelor of Science (Nursing) Semester 2‚ AY2013-2014 17 March 2014 1. INTRODUCTION Birth defects‚ also known as congenital diseases‚ are structural or functional
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allows oxygen and carbon dioxide to bind to it‚ and as much as possible. One haemoglobin molecule can carry four oxygen molecules each bound to a specific site. Haemoglobin has a quaternary structure. Most of the amino acids in haemoglobin form alpha helix eps‚ connected by short non-helical segments. Hydrogen bonds stabilise the helical sections inside this protein‚ causing attractions within the molecule‚ folding each polypeptide chain into a specific shape. Even though carbon dioxide is carried
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Rosalind Franklin: The Unrecognized Collaborator The video begins by introducing Francis Crick and James Watson and speaking about their contributions on the discovery of the double helix in DNA. However Watson and Crick could not have made their discovery without the research and contributions of one unrecognized scientist: Rosalind Franklin. The video talks about Rosalind’s early life and then shows us the legacy that she left behind in science. From an early age Rosalind was extremely intelligent
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bonding‚ meaning that the amino acid clutches to carboxyl groups by using a dehydration type of synthesis. This classification is decided by DNA. The second type of structure is basic shapes found in the proteins (Kim‚ 2005). The beta sheet and alpha helix are the main examples of this. There can be many of both of these within a protein. Tertiary structure can’ t be described as a single shape‚ it is basically a glob. Tertiary structure is the shape of the single protein. The tertiary structure cannot
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The structure and function of carbohydrates A carbohydrate is an organic molecule containing only Carbon‚ Hydrogen and Oxygen with the general formula Cn(H20)n. They are made up of individual molecules called monomers which are joined together by condensation reactions to make a longer chain called a polymer. Carbohydrates are categorised in to three main groups; monosaccharides‚ disaccharides and polysaccharides. Monosaccharides are single sugars and are sweet tasting soluble substances such
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One of the architectural highlights is the spectacular open double helix staircase that is the centerpiece of the château. The two helices ascend the three floors without ever meeting‚ illuminated from above by a sort of light house at the highest point of the château. There are suggestions that Leonardo da Vinci may
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