BIOL 1107 1nd Edition Lecture 2 Outline of Last Lecture I Biology Chemistry II Define Important Terms III Molecular Interactions Outline of Current Lecture I II III Carbon Functional Groups Water Current Lecture I Carbon Carbon forms backbone of proteins lipids sugars in body In addition it forms lots of diverse structures which include long chains branched rings and complex rings Rings glucose carbon and oxygen major backbone Complex rings cholesterol II Functional Groups Functional groups change properties of molecules These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Some functional groups Phosphate group Methyl Which ones can become charged Carboxyl O becomes O Amino N becomes N because it gains a hydrogen Which of these are non polar Methyl In addition to functional group shape is important Water Hydrogen bonds still present when water becomes solid crystalline structure How do water molecules interact with O2 molecules and NH3 molecules Indicate types of reactions view Figure 1 Figure 1 The molecule Figure 2 shown is likely to be a Hydrophobic doesn t like water b Hydrophilic likes water Figure 2 Water is just going to form a shell around the molecule but won t completely break it apart Ex sugar Polar molecules hydrophobic Non polar molecules hydrophilic Amphipathic molecules both hydrophobic and hydrophilic Water molecules almost always tend to want to hang out with its own kind Know hydrophobic effect non polar interaction van der Waals Is C6H8O6 likely to be water soluble Yes
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