Chapter 9 The World of Plastics and Polymers Overview • Plastics are all around us – Polymers‚ materials whose molecules consist of long chain of atoms • Natural • Synthetic • Use of material and impact on economy‚ lifestyle‚ and leisure – Word plastic to some carry connotation “cheap” or “tacky” – Synthetic polymers revolutionised modern life • eg plastics become important in automobile industry‚ some new plastics stronger than steel and resist corrosion‚ less dense than structural
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are carbohydrates‚ lipids‚ proteins and nucleic acids. I will explain what they do and what they are made of. Carbohydrates are in foods‚ some examples are sugars and starch. The structure of a carb is ring shaped‚ it is an easy one to know. The monomer of a carb is monosaccharide‚ which means one sugar. A monosaccharide consists of glucose‚ fructose and galactose. Carbs help give the body energy and help with storage. That is how Carbs help your body. Lipids are made up of fats‚ butter oils and
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Which of the following lists the terms from simplest to most complex? * cells‚ tissues‚ organs‚ organ systems‚ organism The smallest unit of life? * Cell The process of_________ transforms solar energy into chemical energy. * Photosynthesis All the chemical reactions that occur in a cell are called? * Metabolism All single-celled organisms including archaea and bacteria are prokaryotes? * False‚ because some Eukaryotes‚ including Protista are single- celled. Prokaryotes belong
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to reduce porosity. All these methods have been found to be helpful to a great extent‚ but none of these methods could really help to reduce the water voids and the inherent porosity of gel which is estimated to be about 28%. The impregnation of monomer and
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_____________________________________________________ 4. What monomers make up lipids? What are the polymers called?_____________________________________________ 5. How many grams of carbohydrates are in your item?__________________________________ 6. How many Calories come from carbohydrates? Hint: 1 gram of carbs=4 Calories._________________________ 7. What is one function (job) of carbohydrates?_____________________________________________________ 8. What monomers make up carbohydrates? What are the polymers
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but differ in the covalent arrangement of atoms. GI- have the same covalent partnerships but differ in the spatial arrangement of atoms around a carbon-carbon double bond. E- Molecules that are mirror images of each other. 4. Define monomer and polymer. M-Monomers are small molecules which may be joined together in a repeating fashion to form more complex molecules called polymers. P- A polymer may be a natural or synthetic macromolecule comprised of repeating units of a smaller molecule. 5.
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used is o-Nitrophenylgalactoside (ONPG) which produces galactose and a yellow coloured monomer‚ o-Nitrophenol (ONP)‚ when it is being hydrolyzed. This experiment measures the absorbance reading of the coloured product‚ ONP‚ with the spectrophotometer set at 420nm to study the effect of temperature and substrate concentration on enzyme activity by measuring the absorbance reading of the coloured product monomer at the end of the
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reactant molecules so that they can break and new bonds can form. A catalyst reduces activation energy. 14. Biological catalysts are called enzymes. 15. List the macromolecules | Monomers for macromolecules | Draw chemical structures | Example of monomer & polymer | Carbohydrate | Monosaccharides | | Monomer: glucosePolymer: Glycogen |
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structure of sucrose and the process in which sucrose is broken down into its monomers. [pic] Figure 1.1 (i) Identify monomer X‚ monomer Y and process A. (3 marks) (ii) When Benedict test was performed on sucrose‚ it was observed that the blue colour remained unchanged. Make a conclusion based on this observation. (1 mark) (iii) Monomers X can undergo process B to form polysaccharide P. This polysaccharide can exist in
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Organic Chemistry/Biochemistry 1: Compounds Important to Life • Biologists classify compounds into organic compounds and inorganic compounds. Organic Compound: a compound that is derived from living things and contains carbon Inorganic Compound: a compound generally derived nonliving things • Water Water is an inorganic molecule with unique properties that make it one of the most important compounds for living things. In the water molecule (H2O)‚ the hydrogen and oxygen atoms bond
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