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One full-length diagnostic test in the manual's Introduction and two full-length practice exams in the concluding chapters are presented with all questions answered and explained. The author also presents detailed reviews of all test topics and includes multiple-choice and free-response questions with answers at the end of each topic's chapter. Test topics include: biochemistry, the cell, cell respiration, photosynthesis, cell division, heredity, the molecular basis of inheritance, classification, evolution, plants, animal physiology, the human immune system, animal reproduction and development, ecology, animal behavior, and an extensive laboratory section. Enclosed with this manual is a CD-ROM, which contains two additional practice tests with explained answers and automatic scoring.