Through a mixture of lecture and class discussion, students will be introduced to the two different types of enzymes, with examples given for each type.  Digestive enzymes- amylase, lipase and protease and proteolytic enzymes- pepsin, trypsin, and chymotrypsin, will be discussed.  Students will be encouraged to participate in class discussion by asking questions about the topics covered.  A slide show will be presented.  The material is appropriate for high-school biology students.  A prior...