sink or source ?
DESCRIPTION
Sink or Source ?. Sink or Source ?. Sink or Source ?. Sink or Source ?. Sink or Source ?. Sink or Source ?. Example of starchy food. Sink or Source ?. Animals eat fruit as the primary source of natural sweetness….. If an animal is looking for an alternative source of sugar - PowerPoint PPT PresentationTRANSCRIPT
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Sink or Source ?
Example of starchy food..
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Animals eat fruit as the primary source of natural sweetness…..
If an animal is looking for an alternative source of sugar where would they look?
Sink or Source ?
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Almost pure fructose
Honey
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Sugarcane
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Polynesia
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Columbus, 1500s
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At first Europeans used sugar as a medicine…
But later used it as flavoring…….
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Due to water pollutionEuropeans needed to boil the water
Tea drinkers
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The drug "Ecstacy" stimulates serotonin producing cells, which
stimulates the areas of the prefrontal cortex that give feelings
of euphoria and mood enhancement.
Serotonin PathwayThe anti-depressant Prozac increases serotonin levels byreducing loss of it by the body
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12 million African slaves brought to theCarribean to work in sugarcane fields
…..most died within 10 years
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Napoleon BonaparteEmperor of France
..early 1800s
Sugar Beet
…grows in temperate climates!
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High Fructose Corn Syrup
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40-160 lbs of sugar per year = 50-200 grams per day !
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An Orange = 11 grams of sugarAn Apple = 12 gramsA Peach = 8 grams
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Diet soda is no better.
….studies with teenage girls have shown
that it only encourages caloric intake….
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Sugar consumption often goes hand-in-hand with consumption of fats, which makes the situation even worse
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New USDA Diet Recomendations
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Chapter 38 - Plant Nutrition
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p. 782
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Plants take up whatever mineral elements are in the soil…
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Plants take up whatever mineral elements are in the soil…
Some plants are “hyperaccumulators” of minerals….
Lead …pollution near highwaysCadmium …pollution near factoriesStrontium …..can be radioactive (Chernobyl)Selenium ….LocoweedGold …..used to locate gold deposits
100x soil concentrations…
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Plants take up whatever mineral elements are in the soil…
Some plants are “hyperaccumulators” of minerals….
These plants can be useful in “phytoremediation”
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