(Same as Molecular, Cell, and Developmental Biology M175B, Physiological Science M180B, and Psychology M117B.) Lecture, four hours; discussion, 90 minutes. Requisites: course M101A (with grade of C- or better), Life Sciences 7C. Molecular biology of channels and receptors: focus on voltage dependent channels and neurotransmitter receptors. Molecular biology of supramolecular mechanisms: synaptic transmission, axonal transport, cytoskeleton, and muscle. Classical experiments and modern molecular approaches in developmental neurobiology. P/NP or letter grading.