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Biochemistry

Biochemistry . Macromolecules! Carbohydrates Lipids Proteins Nucleic Acids. Intro video:. http://www.youtube.com/watch?v=H8WJ2KENlK0&list=SP3EED4C1D684D3ADF&index=3. Carbohydrates. CH 2 OH. O. H. H. H. OH. H. OH. HO. H. OH. Carbohydrates:. Energy molecules. sugar. sugar.

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Biochemistry

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  1. Biochemistry • Macromolecules! • Carbohydrates • Lipids • Proteins • Nucleic Acids

  2. Intro video: • http://www.youtube.com/watch?v=H8WJ2KENlK0&list=SP3EED4C1D684D3ADF&index=3

  3. Carbohydrates

  4. CH2OH O H H H OH H OH HO H OH Carbohydrates: Energy molecules

  5. sugar sugar sugar sugar sugar sugar sugar sugar Carbohydrates • Building block molecules = sugars sugar - sugar - sugar - sugar - sugar

  6. sucrose Carbohydrates • Function: • quick energy • energy storage • structure • cell wall in plants • Examples • sugars • starches • cellulose (cell wall) glucoseC6H12O6 starch

  7. Quick review: On your own • What’s the chemical formula of glucose? • Name one monosaccharide • Name one disaccharide • Name one polysaccharide

  8. CH2OH O H H H OH H OH HO H OH glucose sucrose fructose C6H12O6 maltose Sugars = building blocks -ose • Names for sugars usually end in • glucose • fructose • sucrose • maltose

  9. Building carbohydrates • Synthesis 1 sugar = monosaccharide 2 sugars = disaccharide | glucose | glucose | maltose mono = one saccharide = sugar di = two

  10. Building carbohydrates • Synthesis 1 sugar = monosaccharide 2 sugars = disaccharide | sucrose (table sugar) | glucose | fructose How sweetit is!

  11. BIG carbohydrates • Polysaccharides • large carbohydrates • starch • energy storage in plants • potatoes • glycogen • energy storage in animals • in liver & muscles • cellulose • structure in plants • cell walls • chitin • structure in arthropods & fungi • exoskeleton poly = many

  12. Building BIG carbohydrates polysaccharide glucose + glucose + glucose… = starch (plant) energystorage glycogen (animal)

  13. enzyme enzyme Digesting starch vs. cellulose starcheasy todigest cellulosehard todigest

  14. Quick Review: With a partner • What’s the difference between starch and glycogen as far as humans are concerned?

  15. Cellulose • Cell walls in plants • herbivores can digest cellulose well • most carnivores cannot digest cellulose • that’s why they eat meatto get their energy & nutrients • cellulose = roughage • stays undigested • keeps material moving in your intestines

  16. Different Diets of Herbivores Cow can digest cellulose well; no need to eat other sugars Gorilla can’t digest cellulose well; must add another sugar source, like fruit to diet

  17. Helpful bacteria • How can cows digest cellulose so well? • BACTERIA live in their stomachs & help digest cellulose-rich (grass) meals Eeeew…Chewingcud?

  18. Quick write: On your own • Why are carbohydrates necessary to yours survival? • 4 minutes to write • 3-5 sentences.

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