Chemistry Basics For Biology.

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Presentation transcript:

Chemistry Basics For Biology

Atoms Smallest unit of matter Different types of atoms make up different elements http://ircamera.as.arizona.edu/NatSci102/NatSci102/lectures/spectroscopy.htm

Molecules Two or more atoms joined by chemical bonds http://en.wikipedia.org/wiki/DNA

Covalent bonds Electrons are shared

Ionic Bonds Electrons are stolen, creating charged ions that are mutually attracted.

Hydrogen “Bonds” Magnet-like attraction between polar molecules when one contains hydrogen Much weaker than covalent bonds http://www.mrothery.co.uk/biochm/biochmnotes.htm

Polar Molecules Water is polar Two atoms of hydrogen are covalently bonded to one oxygen. Oxygen is an electron “hog,” so the oxygen gets a partial negative charge and the hydrogen gets a partial positive http://awesomealexs.wikispaces.com/Chemistry_of_life

Nonpolar Molecule Lipids are nonpolar Molecules that don’t have any charged ends

“Like Dissolves Like” Polar molecules dissolve in polar liquids Nonpolar molecules dissolve in nonpolar liquids Water and oil don’t mix!

Polymer Long, chain-like molecule Like a string of beads

Monomer Repeating units of a polymer Like the individual beads on a necklace

Macromolecule Macro=large (opposite of ‘micro’) Molecule=molecule LARGE MOLECULES! All biomolecules are macromolecules.

Biomolecules Carbohydrates Lipids Proteins Nucleic Acids

Quizlet! Free app Can access from a computer Pre-Made Flashcards! Study on your phone wherever you are SUPER COOL!

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