This edition includes:

• One recent Regents exam and question set with explanations of answers and wrong choices
• Teachers' guidelines for developing New York State standards-based learning units.

Two comprehensive study units that cover the following material:

• Unit One explains the process of scientific inquiry, including the understanding of natural phenomena and laboratory testing in biology
• Unit Two focuses on specific biological concepts, including cell function and structure, the chemistry of living organisms, genetic continuity, the interdependence of living things, the human impact on ecosystems, and several other pertinent topics