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Reema Patel December 03, 2010 Period: 6 Why a Molecule?s Shape Matters 3 things I found interesting The average person can discriminate between 4,000 to 10,000 different odor molecules They can fit properly into these receptor sites, which transmit impulses to the brain. The brain then identifies these impulses as a particular aroma. About 75% of what we taste is actually coming from out nose! That?s why when you are sick sometimes the food doesn?t taste as good. Caffeine can affect your perception of pain by binding to endorphin receptors. 2 things I would like to know more about: I would like to know more on how the nose and mouth work together and how they affect our taste buds More on how caffeine and other drugs affecting our body and brain would be interesting.

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