This popular manual's detailed second edition prepares students to succeed when they take the SAT Subject Test in Biology E/M (Ecology and Molecular). The book presents a short diagnostic test and two full-length Biology E/M practice tests with all questions answered and explained. It also includes an overview that explains the test's format, followed by strategies designed to help students achieve their highest score. Extensive subject reviews offer preparation in every topic that is tested on the Biology SAT, including cellular and molecular biology, heredity, evolution and diversity, organismal biology, and ecology. A lengthy glossary gives brief descriptions of hundreds of biology terms.