lab 1 bio 201

lab 1 bio 201 - Introduction: Essential for metabolic...

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Introduction: Essential for metabolic reactions in the human body, vitamins are nutrients that act as catalysts, and participants in chemical reactions. (Vitamin) This experiment focused on the very important nutrient, vitamin C. Vitamin C is both water soluble and fat soluble. Water soluble molecules dissolve in water, and fat soluble molecules are absorbed through the intestines with the help of lipids. (Vitamin) Vitamin C is also known as Ascorbic Acid and its structure is pictured below: (Wikipedia) In the human body, vitamin C helps in the formation and development of collagens. These collagens give bones, tendons, and skin their strength. Human growth, tissue repair, and tooth and cartilage development are all dependant on vitamin C. Vitamin C is required for synthesis of dopamine, noradrenaline and adrenaline in the nervous system or in the adrenal glands. (Wikipedia) Along with the many biological functions dependent on vitamin C, it also prevents the development of scurvy. Scurvy leads to the formation of liver spots on the skin, spongy gums, and bleeding from all mucous membranes. The USDA recommends 90mg of vitamin C per day in order to provide the body with enough of the nutrients to perform the needed molecular reactions and prevent scurvy. (Wikipedia) Eating many fruits and vegetables like blackberries, turnip greens and oranges, will help you obtain the recommended daily amount of vitamin C. In this experiment, the two questions posed were the level of vitamin C present in cabbage and if cooking vitamin C destroyed it. The hypothesis that was proposed to answer these questions was that if vitamin C is cooked, then the level will decrease. Many steps were taken in this experiment to try and answer these two questions pertaining to vitamin C. Materials and Methods: Two groups of cabbage were cut into small pieces at approximately 2cm diameter per piece, to help blend and cook evenly and rapidly. Next, the cabbage pieces were weighed out on an electronic scale to equal two separate 20-gram portions. One group was used as the cooking sample, and the other was used as the raw sample. Using a
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This note was uploaded on 04/07/2008 for the course BIOL 201 taught by Professor Mechling during the Spring '07 term at Towson.

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lab 1 bio 201 - Introduction: Essential for metabolic...

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