Introduction Colloids is a system which consist of two or more phase‚ which are dispersed phase and medium of dispersion. The size of colloids particle is in the range of 10-9m to 10-6m. However this molecules is too small to be viewed under ordinary optical microscopy measurement. This colloidal particles is classified into several type‚ based on the physical state of the dispersed phase and dispersed medium. Moreover for solution‚ it can be defined as a homogenous phase which is formed by dissolving
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Catabolism of Proteins F. Photosynthesis Page 2 BIO 2924 Mr. Smith Unit III Enzymes An enzyme is an organic catalytic agent produced by a living cell. A catalyst is a substance that has the capacity to speed up chemical reactions without itself being altered after the reaction is complete. Characteristics of Enzymes 1. Most enzymes are proteins or proteins combined with other chemical groups‚ and other enzymes (ribozymes) are composed of RNA. Since enzymes are proteins or RNA molecules
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thyroid gland is an integral part of the endocrine system in the human body. The thyroid gland secretes the thyroid hormone‚ which plays an important role in the growth of the body. The thyroid is butterfly shaped‚ and located at the bottom of the neck. Two important hormones produced by the thyroid gland are thyroxine and triidothyronine. Both of these hormones help the body grow after birth‚ and they also aid tissues increase their oxygen use within these tissues. The thyroid gland secretes
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“Describe the role of genes and hormones in gender development” Biological sex is determined by chromosomes in your genes. At prenatal development‚ only a few weeks after conception‚ there is no notable difference between male and female structure until the Gonadal Ridges‚ the structure which develops either female or male sex organs‚ grows to determine the sex of the baby. All prenatal babies have genitalia that appears distinctly feminine until at three months‚ hormones- testosterone if the baby’s
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that your body uses in small amounts to synthesize thyroid hormones that are necessary for regulating the body growth‚ development‚ metabolism and body temperature. Most of the iodine in the body is found in the thyroid gland‚ but is found also in the blood and muscles. The body contains approximately 20 to 30 mg of iodine which is mostly stored in the thyroid gland located in front of the neck. Food sources: Milk is the major source‚ fish from the sea‚ ‚ shell fish‚ fish liver oil‚ sunflower seeds
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How the structure of proteins are related to their functions Rachel Morris The basic building blocks of proteins are amino acids‚ the biuret reaction tests for protein. A solution of sodium hydroxide is added to a sample then a few drops of copper sulphate solution‚ if positive – the solution will turn mauve. There are 20 different amino acids and they can be joined in any order. Therefore there can be many different functions. A protein consists of one or more polypeptide chains (a polypeptide
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stimulation of growth hormone release via somatostatin inhibition Joseph Angelo Israel Peguit University of the Philippines in the Visayas Cebu College Natural Sciences and Mathematics Division Abstract Secretion of growth hormone is affected by two primary hormones: Growth hormone-releasing hormone and somatostatin. The former is the primary stimulant to promote growth hormone secretion while the latter is the primary inhibitor that prevents growth hormone secretion. Many studies have already
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Applications of Colloids | Colloids play a very important role in nature‚ in our daily life and in industry. Some of the important applications of colloids are discussed below. 1. Food stuffs and medicines: Many of our food stuffs are colloidal in nature. Milk‚ butter‚ whipped cream‚ fruit jellies‚ ice cream‚ bread etc. are all colloidal in nature. For example‚ milk is an emulsion of butter fat in water‚ stabilized by milk protein (casein). Ice cream is a dispersion of colloidal ice particles
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Growth Hormones: Should We Use Them? Michelle Szalasny Dr. Juan Bouzat Sarah Wofford Biology 2040H Fall 2013 Introduction Recombinant Bovine Growth Hormone‚ also referred to as Bovine Somatotropin (rBST)‚ is a genetically engineered growth hormone most commonly manufactured by Monsanto. Monsanto sells this drug under the name of “Posilac” to dairy farmers who choose to use the growth hormone. Although most of these bovine growth hormones onl y
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essay “the right chemistry” and “ My hormones awakening” In “the right chemistry”‚ the author Anastasia Toufexis talks about love mostly in a scientific way. The different emotions and different chemicals that your body releases as you fall in and out of love. The old saying that "Love is like a Roller coaster” holds true. You are always full of emotions‚ which are driven by the chemicals your body excretes. It goes on to say that you get a sort of High‚ from being in love‚ and that sometimes
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