Praxis Biology 20231 20232 20235 - XAM PRAXIS Author:Sharon Wynne PRAXIS Biology 20231, 20232, 20235, 30233 Includes competencies/skills found on the PRAXIS Biology tests and 125 sample-test questions. This guide, aligned specifically to standards prescribed by the Educational Testing Service, covers the sub-areas of Basic Principles of Science; Molecular and Cellular Biology; Classical Genetics and Evolution;... more » Diversity of Life, Plants, and Animals; Ecology; and Science, Technology, and Society« less