The PRAXIS II General Science: Content Knowledge Exam (0435 and 5435) is taken by candidates interested in teaching secondary-level science. The exam is comprised of 120 multiple-choice questions covering science, technology and society; earth/space sciences; life sciences; physical sciences and science, methodology, techniques and history. Candidates have two hours to complete the exam.
The Science, Technology and Society section of the exam covers medical advances, health awareness, consumer products, natural resources management, human and naturally caused hazards, and the effects on the environment and society of science and technology.
The Earth/ Space Sciences section of the exam covers astronomy, meteorology, oceanography, historical and physical geology, seasons, time zones, units of distance, satellites, space exploration, the organization of the solar system, origins and life cycles of stars, theories of the origin and structure of the universe, forecasting, maps, frontal systems, climatic change, pressure systems, precipitation, air masses, humidity, clouds, winds, atmospheric properties, seasonal and latitudinal variations of solar radiation, the chemistry of seawater, the ocean floor, currents, tides, waves, fossils, time scales, stratigraphy, the history of Earth, minerals, rocks, earthquakes, volcanoes, weathering and erosion, plate tectonics, and the hydrologic cycle.
The Life Sciences section of the exam covers ecology, animals, plants, evolution, genetics, cell structure, population and social behavior, community structure, ecosystems, energy flow and food webs, biomes, biogeochemical, chemical cycles, anatomy and physiology, homeostasis, responses to stimuli, roots, stems, leaves, transport systems, sexual and asexual reproduction, patterns, theories, evidence of evolution, DNA replication, human genetic disorders or mutations, heredity and genetic classification, protein synthesis, Mendelian and non-Mendelian inheritance, genetic engineering, mitosis, meiosis, cell cycle, and cellular bioenergetics.