Part 1: INTRODUCTION TO HYPERTHYROIDISM Hyperthyroidism is a large topic so we have split it into four manageable sized portions. This page introduces hyperthyroidism. Subsequent pages are listed at the bottom which address more specific details of making the diagnosis of hyperthyroidism‚ the causes of hyperthyroidism‚ and different treatment options available for hyperthyroidism. In healthy people‚ the thyroid makes just the right amounts of two hormones‚ T4 and T3‚ which have important
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EXPERIMENT – 9 To Prove that Light is Necessary for Photosynthesis. Aim : To show experimentally that light is necessary for photosynthesis. Requirements : A potted plant‚ iodine solution‚ black paper strip‚ paper clips‚ water bath. EXPERIMENT PLEASE VIEW THE ANIMATION FILE FOR THE PROCEDURE Observation : 1) The region of the leaf which was exposed to sunlight turns blue in colour. 2) The region of the leaf covered with black strip turns brownish in colour
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Solution by Iodometric Titration Results and Discussion Oxidation-reduction titration is a kind of volumetric analysis where the titrant used undergoes a redox reaction with the analyte. In this experiment‚ the oxidation of iodide (I-) to produce iodine (I2) is taken into consideration. The use of this concept in a redox titration is called iodometry. Iodimetry‚ on the other hand‚ deals with the reduction of I2 into I-. Between these two methods‚ iodometry is more popular because it is more efficient
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much starch grains are distributed within a transverse section of a banana Apparatus: banana‚ iodine solution‚ ruler‚ white tile‚ stopwatch‚ microscope slide‚ coverslip‚ filter paper‚ Light microscope Method: 1) A piece of banana was place on a tile and a section was cut across the piece of banana about 5mm thick. 2) The surface of the banana was covered with iodine solution and left for about one minute. 3) The distribution of starch in the section of the
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bacteria. The purpose of crystal violet in the Gram’s stain procedure is to differentiate bacteria into two different groups of pink and purple colours with gram positive being purple and gram negative being pink in colour. D. What is the purpose of iodine in the Gram’s stain procedure? What is a mordant? Keeps
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the UN’s Standing Committee on Nutrition World Nutrition Situation 5th report‚ stunting‚ which is the prevention of growing or developing properly‚ affects more than 147 million preschoolers in developing countries. The same report also shows that Iodine deficiency accounts for the world’s utmost single cause of mental retardation and brain damage. The World Food Program reports that undernutrition affects school performance and studies have shown it often leads to a lower income as an adult. The
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blocks of thyroid hormones. Iodine is then needed for formation of the hormones by its absorption from the diet and then carried via bloodstream to the thyroid gland which is then secreted into the colloid and oxidised into iodine ions. The attachment of iodine ions to tyrosine molecules triggers the pairing process performed by the thyroid peroxidise. This leads to production of thyroxine hormone T4 (containing four iodine ions) and triiodothyronine T3 (containing three iodine ions). (Martini 2004)
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SO4-2(aq) + H2O(l) Balance the reaction. Which substance is the oxidizing agent? What is the equivalent weight of H2O2 (Molar mass = 34.0 grams) in the above reaction? What is the normality of a 0.040 M H2O2 solution used in the above reaction? 8) Iodine reacts with thiosulphate ion (S2O3-2) in acidic solution to form iodide and tetrathionate ion (S4O6-2). Calculate the volume in mL of 0.100 M Na2S2O3 needed to react with 0.2538 g of I2. (Answer = 20.00 mL) 9) Thyroxine (C15H11I4NO4) is a hormone
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their Gram classifications. Materials Broth cultures of Staphylococcus aureus and Pseudomonas fluorescenes‚ a Bunsen burner‚ one inoculating loop‚ one clean glass slide‚ one slide dish‚ bibulous paper‚ Gram-staining materials (Crystal Violet‚ Iodine‚ Ethyl Alcohol‚ Safranin‚ DI water)‚ and a microscope. Methods Smear Preparation Obtained a clean dry glass slide‚ Staphylococcus aureus and Pseudomonas cultures. Added drop of water onto the center of slide. 3. Flame-sterilized inoculating
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drops of Lugol’s iodine solution were added to each of the test tubes. The test tubes were mixed thoroughly. Test tube 1 was placed under a flame for observation. Colour change within the test tubes were recorded. Protein test 10 test tubes were used and lab-elled. 9 of the test tubes were filled with 5ml of food sample. 3 drops of Biuret reagent were added to each of the test tubes. The test tubes were gently shaken to mix the solution. Observation of colour change was
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