carbohydrate solution. The enzyme that involved in the reaction is salivary amylase. The action of amylase on starch is with the mixture of IKI (iodine and potassium iodide test).Starch solution will have a blue-black colour in the mixture but no changes in colour for maltose solution. When hydrochloric acid (HCl) is added to the starch solution‚ the color will
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ACIDS‚ BASES AND SALTS 1. What are indicators? What are the different types of indicators? An indicator is a dye which changes colour when put into an acid or a base. The different kinds of indicators are- Natural indicators- Litmus is a natural indicator‚ litmus solution is a purple dye which is extracted from a plant called lichen. Litmus turns red in acidic solutions and blue in basic solutions. Other
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Controlled: Amount of starch solution – 2mL measure using a 25mL pipette Controlled: Amount of hydrochloric acid 1M – 2 drops from a dropper bottle Controlled: Amount of distilled water – 4mL measure using a 25mL pipette Controlled: Molar concentration of hydrochloric acid (HCl) – 1M controlled using the same dropper bottle of HCl each time Hypothesis As the temperature of the juice increases the content of Vitamin C will decrease. Materials Nudie orange juice Iodine Starch solution Dropper
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products (eg urea‚ ammonia)‚ hormones and digestive juices can all be transported by using water as a solvent. Molecules such as starch and glycogen which are hydrophobic are not soluble and therefore are ideal for storage. In the digestive system many polymers and dimmers need to be broken down into smaller molecules by the process of hydrolysis. Water is used in hydrolysis reactions to separate the larger molecules into smaller ones (eg proteins into amino acids). Water is produced in respiration
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Acids (VFAs) Acetic Acid Butyric Acid Propionic Acid Omasum “Manyplies” No enzymes from walls Function Reduce particle size Absorb some water Abomasum “True stomach” that secretes enzymes from walls Glandular stomach like monogastric fundic region HCL‚ Mucin Pepsinogen‚ Rennin and Lipase Small and Large Intestine Same SI sections Duodenum‚ Jejunum and Ilium Same LI sections Cecum‚ Colon and Rectum Ruminant Differences Esophageal Groove By passes reticulum and rumen in young animals Rumination
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Abstract In an environment isolation procedure‚ experiments under categories‚ such as‚ morphology‚ physiology‚ antibacterial susceptibility‚ selective media‚ and biochemical provide results. Both the unknown isolate and members of the Micrococcus genus were shown to be obligate aerobes. By using staining methods‚ this proved that the organism is gram positive. Morphology‚ such as‚ orange pigmentation and coccus shape provide similarities to the Micrococcus genus. Physiological tests were shown to
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Blue coloration turned to brick red precipitate. Reducing sugar is present in the solution A. Iodine test: The coloration remained unchanged. Starch is absent in solution A. Solution B Benedict’s test: The blue coloration remained unchanged. Reducing sugar is absent in solution B. Iodine test: The coloration turn into dark blue coloration. Starch is present in solution B. Table 2: Tube Contents Temperature(°C) Benedict’s Test-Colour Observation After min 5th min (from tubes 1
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BACKROUND INFORMATION Organic chemistry is the study of hydrocarbons and their various deviations. (Ex. natural gas‚ paper‚ proteins‚ carbohydrates) Saturated hydrocarbons are hydrocarbons with carbon-carbon single bonds. (Ex. C-C) Unsaturated hydrocarbons are hydrocarbons with one of more multiple carbon-carbon bonds. (Ex. C=C double bond‚ triple bond‚ or both) Stereoisomers have the same molecular and structural formulas but different orientations of atoms in space. Constitutional isomers
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the enzymatic action of saliva‚ we observed at the end of the experiment‚ that a yellow-red precipitate formed which indicated that sugars were present. The reason that sugars were found and not starch‚ is because saliva contains an enzyme known as salivary amylase which catalyses the breakdown of starch to produce sugars such as maltose (Sherwood‚ 2013). When testing the effect of the salivary amylase concentration‚ we observed that the solution containing the most saliva (3ml)‚ become colourless
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the effect of pH on amylase activity Aim The aim of the experiment is to determine the effects of different pH and the rate of reaction on fungal amylase and starch. Introduction The enzyme amylase is found in the human body‚ it catalyses the hydrolosis of internal glycosidic bonds in polysaccharides‚ the breakdown of starch into sugars. Amylase is present in human saliva‚ where it initiates the chemical process of digestion. Enzymes work best at an optimum pH of 7 which is the bodies
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