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    Chapter 5 Obtaining energy and nutrients for life CHAPTER REVIEW Key words absorption alimentary canal amylase anus autotrophic autotrophs bile bile duct bolus carnivores cellular respiration chloroplasts chyme colon cystic fibrosis digestion digestive system duodenum emulsification enzymes faeces foregut fermenters gall bladder gastric juice herbivores heterotrophic heterotrophs hindgut fermenters ileum jejunum lacteals large intestine liver mucus oesophagus omnivores pancreas pepsin

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    Cassava starch as an effective component for Ideal Biodegradable Plastics A Science Investigatory Project presented to Philippine Women’s College of Davao In partial fulfillment Of the requirements in Science and Technology IV (PHYSICS) To Mr. Kenny Lloyd L. Angon Physics Teacher By Gabriel Arañas Danielle Andrea M. Ibaos Jascha Bridget Lim John Vergel Mori Grade 10 – Probity March 2013 Acknowledgement Before I acknowledge the people who supported this Science Investigatory

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    3). Citric acid promoted the collapse of starch granules; however‚ adding excessive citric acid led to the hydrolysis of glucose chains. No decrease in the viscoelasticity was observed for cornstarch pastes by adding acid at 25 °C after gelatinization. KEYWORDS: Cornstarch; viscoelasticity; citric acid; pH INTRODUCTION Starch has been widely used as a thickener‚ stabilizer‚ or gelling ingredient in the food industry. The main constituents of starch are amylose and amylopectin‚ which consist

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    brick-red precipitate. | Sucrose | Reducing Sugar | As Benedict’s Test | Iodine Solution | Starch | A Blue-Black Colouration | Sudan III | Lipids | A Red-Stained Oil Layer separates on the surface of the water‚ which remains uncoloured | Biuret Solution | Proteins | Mauve or Purple Colour Slowly Develops | ‘ Table 2 . Biochemical Tests On Common Foodstuffs Sample | Proteins | Lipids | Starch | Sugars | Egg white | Turns Purple / +ve | Turns pale orange / -ve | Turn yellow/-ve |

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    groups. A chemical test that is sensitive to these groups can be used to identify molecules that are in that class. This lab is broken down into four different sections‚ the Benedict’s test for reducing sugars‚ the iodine test for the presence of starch‚ the Sudan III test for fatty acids‚ and the Biuret test for amino groups present in proteins. The last part of this lab takes an unknown substance and by the four tests‚ determine what the substance is. BENEDICT’S TEST Introduction: Monosaccharides

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    drops of each amylase and mix it with iodine to observe the presence of starch at each temperature. We conducted this experiment for both bacterial and fungal amylase. Results were reached based on the color of the iodine and amylase mixture. Colors were classified from 1-5‚ 1 being a light yellow and 5 being a dark brown. A light-yellow color means starch is not present in the solution‚ the lighter the color the less starch. This means that the temperature

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    Alpha amylase is an enzyme that aids in the breakdown of starch and glycogen to form glucose and maltose through the hydrolyses of alpha linked polysaccharides1. Starch is a complex carbon and is the main energy storage material found in plants and some bacteria. It is a major component of food as it supplies plants with energy and carbon. Starch consists of two types of polysaccharides called amylose and amylopectin1.The properties of starch can depend on the number of alpha 1‚4 glycosidic bonds and

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    for students. The Digestive System 1329 Words Urinary and Digestive System 1138 Words Compare Rat And Toad Digestion Essay 81 - 100 - StudyMode.com www.studymode.com/.../compare-rat-and-toad-digestion-page5.html‎ 20+ items - Free Essay about Compare Rat And Toad Digestion available ... Compare The Perception Of World War One In ’The Accrington Pals’ To The ... Digestion Of Starch By Salivary Amylase What is the difference of a toads digestive system to a rat wiki.answers.com › ... › Science

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    acid | Proteins |  Sulphur carbon hydrogen oxygen nitrogen | 3. Briefly describe how large molecules are made from smaller basic units. 4. Make a table for the outcomes of these tests Substance | Test | Outcome | Starch | Iodine solution | If starch is present it will go Black/Blue | Sugar | Benedict’s Solution | when added to glucose and heated‚ turns brownish-orange | Protein | Biuret Test | The intensity of the colour is directly proportional to the concentration of a substance

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    Respiration‚ digestion and rocks Respiration Respiration is a chemical reaction that happens in all living cells. It is the way that energy is released from glucose‚ for our cells to use to keep us functioning. Remember that respiration is not the same as breathing (which is properly called ventilation). The glucose and oxygen react together in the cells to produce carbon dioxide and water. The reaction is called aerobic respiration because oxygen from the air is needed for it to work. Digestion

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