This assignment was adapted from Winterwren Advanced Placement Biology Study Guides By: P. Vanderschaegen

QUESTIONS

1.   List an example of an isotope used in biological research or medicine. 

2.  Define the term half-life.

3.  Explain what is meant by pH. Give the name of materials that resist a change in pH.

4.  Describe how a polar covalent bond differs from a nonpolar covalent bond and an ionic bond.
    
5.   Draw two water molecules in a way that illustrates a hydrogen bond.

6.   Produce a drawing which explains why water easily dissolves table salt (NaCl).

7.   Indicate why oxygen and carbon dioxide are basic to life, and name the chief source of each of these molecules.

8.  Why are buffers important to living things? Explain how a buffer system works.