This revised workbook/lab text consists of 21 projects that can be executed with readily available materials, a minimum of elaborate equipment and a reasonable amount of preparation time. Early projects deal with biochemistry and cytochemistry; the middle ones focus on organelles and their physiology; and later activities explore more advanced molecular topics such as restriction mapping strategies. New to this edition: a concise section on statistics covering the mean, standard deviation and standard error; and a chapter designed to enable students to write up their work as a lab report.