Describes an undergraduate biochemical experiment involving the isolation and characterization of acid phosphatase from readily available materials. (Author/SL)

Presents classroom and laboratory teaching and demonstration ideas, including a demonstration of optical rotation, automatic potentiometric titration, preparation of radioactive lead, and an organic lab practical in library resources. (SL)

Actin and myosin have now been demonstrated to be important constituents of many eukaryotic cells. Their role is primarily that of a contractile system underlying all aspects of cellular motility. Described here is a simple experimental system to demonstrate quantitatively aspects of motility and its regulation in a slime mold. (Author/MA)

Describes an undergraduate biological chemistry laboratory experiment which provides students with an example of pseudo-first-order kinetics with the cardiac glycoside inhibition of mammalism sodium and potassium transport. (SL)

Describes an experiment wherein simple gamma-ray detection and analysis techniques were utilized to study radioactivity in local precipitation. (Author/SL)

An experiment on the heat conductivity of different materials are described. Applications for energy education in the elementary classroom are implied. (MDR)

Presents an apparatus for demonstrating two-dimensional random motion suitable for illustrating molecular phenomena. Three specific uses are presented. (SL)

Describes an experiment for estimating the half-life of thorium-232. (SL)

Sticks, string and observation start children off on the bare bones of human biology. (Editor)

Students are challenged to investigate a simple electric motor and to build their own model from a battery, wood block, clips, enameled copper wire, bare wire, and sandpaper. Through trial and error, several discoveries are made, including a substitute commutator and use of a radio to detect motor armature contact changes. (DH)

Presents activities and experiments that can be performed with mirrors to illustrate the nature and behavior of light. Includes diagrams, directives and investigative questions. (ML)

Describes a science activity designed for undergraduate biochemistry classes. Provides background, a list of materials, experimental procedures, and the results of this experiment. (CW)

Presents a practical exercise that enables students to measure flux control coefficients in a metabolic pathway in vitro, to verify the summation property, and to compare the differences in the distribution of these coefficients in different steady states. Discusses background, materials, methods, and results of the activity. (CW)

Describes the construction of an inexpensive apparatus for separating proteins by polyacrylamide gel electrolysis in the presence of sodium dodecyl sulphate. (TW)

Suggests a new experiment to study the genetic material of eukaryotes. It is based on the rapid growth and interest of the research on chromatin. (TW)