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Unformatted text preview: Bi Sci 001 Friday March 5, 1999 Announcements: Have a good Spring Break. Lecture notes: What happens to the Carbohydrates we eat? Complex carbohydrates are broken down and the glucose is released slowly into the blood stream. Simple carbohydrates are absorbed rapidly into the blood stream, no digestion needed. The presence of glucose in the blood stream causes the release of insulin from the endocrine cells in the pancreas. Insulin causes increased uptake of glucose by cells. What is the Fate of glucose in cells? Liver : glucose is made into glycogen, or amino acids, or fats, or energy. Fat cells : glucose is used for fat production or energy. Muscle cells : glucose is made into energy or glycogen. Others : glucose is made into energy. This restores the normal blood glucose level. What happens to the Fat we eat? Digested fats become 3 fatty acids and glycerol . The transport of fats and cholesterol in the blood is complicated and involves phospholipid/protein carriers. (chylomicron, HDL, LDL, VLDL)carriers....
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- Spring '99