Life Science 2 lecture 2 notes

Life Science 2 lecture 2 notes - Life Science 2 (lecture 2)...

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Life Science 2 (lecture 2) I. Lipids II. Why do we have taste preferences? III. Carbohydrates IV. Calorie intake: less is more V. Protein Scientific Method revisited: Is maze running influenced by genes? Observation --> Lots of variance in ability Hypothesis --> Maze running is strongly genetically influenced. Prediction --> Experiment --> each generation: test all rats for maze learning ability. breed only the top 20% or bottom 20%; after six generation, found that the dull rats made twice as many errors as in the bright ones. Conclusion --> -------------------------------- I. Lipids Features: not water soluble, major storehouse of energy, good insulators Major types: fats/triglycerides, phospholipids, steroids Fats/Tryglycerides: glycerol attaches to three fatty acid chains (loses water); tristearin (triglyceride) Difference between saturated and unsaturated fats? Depends on whether there are double bonds with hydrocarbon tail Eg. oleic acid (one double bond): unsaturated; less stable; more reactive
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Life Science 2 lecture 2 notes - Life Science 2 (lecture 2)...

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