The OAT Destroyer encompasses a wide range of problems with detailed solutions that act as a teaching aid. The Biology section includes questions on plants, taxonomy, enzymes, evolution, embryology, biochemistry, genetics and more. (Over 260 problems with detailed solutions). The General Chemistry covers virtually every topic. Gas laws, stoichiometry, molecular geometry, acid-base, equilibria, kinetics, descriptive conceptual trends, electrochemistry, buffers, and more. (Over 170 problems and detailed solutions) The Organic chemistry details all the concepts needed to excel, including stereochemistry, SN1, SN2, E1, E2, Aldol, Wittig, Grignard, Claisen, Diels Alder, esterificatation, aromatcity, reaction drilling, nomenclature, and more. (Over 170 problems and detailed solutions). The Physics section includes vectors, energy, work, momentum, fluids, gravitation, circle motion, harmonic motion, electrostatics, circuits, magnetism, induction and optics, to name a few.