1. Chemistry Basics
For Biology

2. Atoms Smallest unit of matter
Different types of atoms make up different elements

3. Molecules Two or more atoms joined by chemical bonds

4. Covalent bonds
Electrons are shared

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

6. Hydrogen “Bonds”
Magnet-like attraction between polar molecules when one contains hydrogen
Much weaker than covalent bonds

7. 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

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

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

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

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

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

13. Biomolecules
Carbohydrates
Lipids
Proteins
Nucleic Acids

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

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