Chemical Senses OLFACTION The sense of smell. Begins with the detection of molecules suspended in the air Olfactory stimuli Must be soluble in fat Taken through the nostrils and circulated within the nasal cavities connected to the nostrils. Olfactory epithelium Thin sheet of cells which contain neural receptors for olfaction Contains olfactory receptor cells and glia-type support cells that produce mucus Also contains basal cells which give rise to new receptors when needed Olfactory
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Chemical Separation Introduction: The objective of this experiment was to extract the pigments from spinach leaves‚ perform Thin Layer Chromatography (TLC) on the spinach leaf extract‚ and then determine the best solvent mixture to use to separate the pigments in the extract. The pigments are located inside the chloroplast walls in the cells of the spinach leaves. In order to obtain the pigments the cell walls must be broken down thus exposing the pigment containing chloroplasts. Upon
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CHEMICAL MEDIATORS OF INFLAMMATION Cell derived mediators Mediator | Source | Function | Vasoactive amines | Histamine | Mast cells‚ basophil‚ platelet | Vasodilation‚ ↑ vascular permeability‚ endothelial activation | Serotonin | platelets | Vasodilation‚ ↑ vascular permeability | Eicosanoids | Prostaglandins | Mast cells‚ leukocytes | Vasodilation (PGD2‚PGE1‚E2 & PGF2-α)‚ pain (PGE2)‚ fever | Thromboxane A2 | | Promotes platelet aggregation‚ vasoconstriction | Prostacyclin
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Dow Chemical Case Question 1 Polyethylene is the world’s most widely used plastic. Polyethylene plastic’s principal application was in packaging‚ from trash bags to milk jugs. It was widely used in the manufacture of everything from trash bags‚ picnic cutlery and garbage pails‚ to plastic toys. Polyethylene also replaced glass‚ wood‚ and metal in certain applications. There were three types of polyethylene‚ Low-density polyethylene‚ High density polyethylene and Low linear density polyethylene
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Blood Diamonds General purpose: To inform Specific Purpose: To inform my audience about one of the most bloodiest events in human history. Thesis: ‘blood diamonds’ is the term referred to one of the most famous tragedies in history. Introduction: Attention Getter: Blood Diamond is a 2006 American political war thriller film co-produced and directed by Edward Zwick‚ starring Leonardo DiCaprio‚ Jennifer Connelly and Djimon Hounsou.[3] The title refers to blood diamonds‚ which are diamonds mined
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Mon/Wed 220-540 Diamonds: The Overpriced Best Friend “A diamond is a girls best friend‚” “A diamond is forever‚” “Nothing says I love you‚ like a diamond‚” these are all statements that have been force fed into our brains since we can remember. But why? Why cant a ruby be our best friend? Why cant the man of your dreams get you an 2.5 carat Sapphire ring when he pops the question? Would you say no if it wasn’t a diamond? Due to the clever marketing team of De Beers‚ they have made diamonds the symbol
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Blood diamonds are diamonds that have had powerful effects on the world. A blood diamonds is the slang term for a conflict diamond. Conflict diamonds are traded illegally‚ they are traded to cause conflict in war-torn areas. Once blood diamonds have been traded into these war-torn areas‚ the diamonds automatically start having a huge role in the conflict between the areas. In this essay I would like to tell you about some important things about blood diamonds. These important things consist of why
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Transport Phenomenon (Electrical and Thermal) in two allotropic forms of Carbon (Diamond and Graphite) Graphite and Diamond both are formed from carbon (two allotropic forms of carbon). Though they have similar constituent element‚ they differ a lot in their properties. Diamond is a good thermal conductor but a bad electrical conductor‚ while graphite is a bad thermal conductor but a good electrical conductor. This is one example of their property difference. The difference in their properties
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Is College Worth the Time and Money? Steve Jobs‚ the founder of Apple‚ has been widely recognized for his talent in creating a company that totally revolutionized the computer hardware industry. There is no doubt that he is a very successful person and his net worth confirms this. Mark Zuckerberg‚ who designed and created the innovative social network Facebook‚ is another example of vision and talent coupled with effort that translated into success. What do these men have in common? They
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According to Jared Diamond‚ what are the “roots of inequality” and what role has these played in the division of the world into ‘haves’ and ‘have-nots’? Explain. 1. I believe that the root of inequality is the location. In certain parts of the world some societies live in places that have a vast amount of resources to live from‚ whereas other areas societies are forced to live in areas where the land lacks the amount of food needed to provide for the community. When the community puts all its time
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