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How We Do Acidic to Basic in a Short Amount of Space and Time

How We Do Acidic to Basic in a Short Amount of Space and Time. Matthew Sender Scientists as Teachers, Teachers as Scientists NSF GK12- Award # 0841377. Stomach Contains Acid… Intestines Not So Much. Low pH (high concentration of acid H + )

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How We Do Acidic to Basic in a Short Amount of Space and Time

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  1. How We Do Acidic to Basic in a Short Amount of Space and Time Matthew Sender Scientists as Teachers, Teachers as Scientists NSF GK12- Award # 0841377

  2. Stomach Contains Acid… Intestines Not So Much • Low pH (high concentration of acid H+) • Intestines (large and small) have a slightly basic pH.

  3. Stomach Contains Acid… Intestines Not So Much • Low pH (high concentration of acid H+) • Intestines (large and small) have a slightly basic pH. • How does our body switch pH between the stomach and the small intestines (they are connected) ? • How does our body deal with fats? • Why does our body need to switch the pH?

  4. The Gall Bladder Releases Bile Bile is released from the gall bladder into the duodenum. Bile is compose of several types of chemicals Small intestines http://en.wikipedia.org/wiki/Gallbladder

  5. The Most Common Bile Acids Cholic Acid Glycocholic Acid Cholic Acid Taurocholic Acid http://en.wikipedia.org/wiki/Bile_acid

  6. Carbonates and Bicarbonates • Tums is CaCO3 or calcium carbonate • Baking Soda is NaHCO3 or sodium bicarbonate • Baking Powder is NaCO3 or sodium carbonate • Bicarbonates react with bile acids and stomach acids to raise the pH to a higher number

  7. What Else Do Bile Acids Do? Fats are not soluble in water. Did they get broken down well by HCl? What do we know of that makes lipids soluble in water?

  8. Side A Cholic Acid Side B

  9. Emulsification of lipids Soap Bile Acid http://en.wikipedia.org/wiki/Bile http://origami-n-stuff4kids.blogspot.com/2009/04/science-soap.html

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