UNDERSTANDING BIOLOGY *ITEM 1 This is a C level item made up of a number of multiple choice questions. These test the basic concepts covered in class. **ITEM 2 This is a B level item made up of short answer Q about proteins/enzymes. ***ITEM 3 This is an A level item made up of short answer Q about food, respiration, ATP and energy. ***ITEM 4 This is an A level item made up of short answer Q about species, the reasons for classification and dichotomous keys.