Chemistry 101-page9

Chemistry 101-page9 - -Submit your evidence by email...

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- HDL or good cholesterol carries cholesterol to the liver where it is converted to bile acids needed for digestion. Proteins - Dietary protein provides amino acids for new protein synthesis. - Some high protein foods are meat, fish, eggs, cheese and beans. - Proteins are also the main source of nitrogen for the synthesis of other kinds of nitrogen- containing biomolecules. - Protein can not be stored in the body and should therefore be consumed every day. - The nitrogen in excess amino acids is converted to ammonia which is then excreted as urea. - The carbons in excess amino acids are cycled to glucose and energy generation or stored as fat. - Protein deficiency is not a problem in the US but is a problem in developing nations particularly with children. Professors Challenge - Page 318 “When hair is wet, it can be stretch to one and half times its dry length.” - Verify or discredit this statement by finding a study published in a technical journal.
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Unformatted text preview: -Submit your evidence by email beginning at 8pm (April 26, 2011) -First 3 students with acceptable responses will receive 5 extra points on their final grade. April 28, 2011 Wet Hair Can Stretch -Special equipment known as Instron exists to secure, stretch, and fracture material. -An instron measures the distance stretched and force required. -Instrons are designed to properly secure and stretch materials to be tested and are used to evaluate everything form steel wires, to seat belts, to synthetic fibers, to leaves, to natural fibers like hair and silk. Vitamins, Minerals, and Additives Vitamins -Vitamins are organic molecules essential to the diet in small amounts. -There are two types of vitamins. -Fat Soluble o Stored in the liver. o High doses can cause toxicities. o A, D, E and K. -Water Soluble o Coenzymes with polar groups (-OH, -NH2, -COOH) o Eight Bs and C o High doses generally less toxic than fat soluble vitamins....
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