BIOLOGY LAB REPORT PRACTICAL M1 TESTING FOR MACROMOLECULES Title : Testing for Macromolecules Abstract : To test for macromolecules (carbohydrates‚ lipids‚ nucleic acids‚ and proteins)‚ iodine solution‚ alcohol‚ aceto-orcein stain and copper sulfate solution are used. The conclusions for all of the tests are positive. Introduction: A) Carbohydrate (starch) Carbohydrates are chemical compounds that contain oxygen‚ hydrogen‚ and carbon atoms. They consist of monosaccharide
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TESTING FOR MACROMOLECULES Describe the positive test for starch. Explain how you know. The positive test for starch is adding iodine solution. In the experiment‚ the starch solution had the most dramatic reaction with the iodine solution. It turned to an opaque bluish-purple solution while other samples all turned to a colour related to orange and yellow other than the vegetable oil. But the vegetable oil was more translucent than completely opaque. Describe the positive test for
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changeDried upNo change 4.sucrose solutionNo changeNo changeDried upNo change 5.starch solutionNo changeDark blue-blackDried upNo change 6.distilled waterNo change (Clear blue)No change (Clear yellow)Dried upNo change Investigation 1A: Testing for Macromolecules Discussion: By observing the table above‚ we could see that Benedict’s test was for reducing sugars‚ iodine test was for the presence of starch‚ filter paper was for the presence of fatty acids‚ and the Biuret test was for amino groups
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bath. 5. The test tubes containing samples were taken out of the hot water bath with test tube holders‚ the reaction was carefully examined and the observations were recorded. 6. The test of the Sudan IV solution was changed to Brown paper bag testing‚ which was done by the teacher before the class. 7. The brown paper bags were dried off by the teacher before the class. The remainders and reactions on the dried brown paper bags were examined and observations were recorded. 8. The samples reacted
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structures are there to make this happen? Respectively‚ a much broader scale can be utilized to assemble the main components for life‚ which they are called macromolecules. Macromolecules are very large molecular structures that contain carbon and are the vital organs for the structure and function of all living things. The first macromolecule that will be addressed is the carbohydrate. Carbohydrates are found in most plants and animals and are usually represented as sugars‚
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diverse macromolecules are different because of the structure of these respective monomers. An exceptionally large assortment of macromolecules gets produced. While the polymers are accountable for the molecular exceptionally of an organism. The joint monomers are virtually universal. The difference in the form of the macromolecules are responsible for the molecular diversity. The variation that occurs both within an organism and among plants can be traced to the difference in macromolecules. Also
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Laboratory Report SCPB111 Principles of Biology Faculty of Applied Sciences Pearson Institute of Higher Education 14 March 2018 Abstract Biological molecules are part of Introduction Biological molecules are formerly known as macromolecules. Macromolecules are large molecules that are formed from smaller molecules called monomers (Ellisman‚ 2014). They are formed by dehydration reactions‚ in which a water molecule is removed during the formation of bonds (Wayne Huang‚ 2015). Biological molecules
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Macro molecules A macromolecule is a very large molecule commonly created by polymerization of smaller subunits. In biochemistry‚ the term is applied to the three conventional biopolymers (nucleic acids‚ lipids‚ proteins and carbohydrates)‚ as well as non-polymeric molecules with large molecular mass such as lipids and macrocycles. The individual constituent molecules of macromolecules are called monomers(mono=single‚ meros=part). Usage The term macromolecule was coined by Nobel laureate Hermann
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bond covalently. In other words‚ the electrons in the valence‚ or outermost‚ shells are shared between the atoms. If a molecule contains a plethora of nonmetal atoms often bonded in complex rings and chains‚ it is deemed a macromolecule. According to Volesky‚ the macromolecules with carbon rings and
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structure which is why they function in these ways. These molecules are known collectively as macromolecules‚ these molecules are grouped into four main categories which each have there own structure. These structures are the key to the macromolecules functions as each of them do a specific task in the body. Macromolecules are grouped into carbohydrates‚ nucleic acids‚ proteins‚ and lipids. In most cases macromolecules are polymers‚ which is a long molecule which are made by linking together a large number
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