Explains how to apply India ink to observe phagocytosis and vacuole formation in Tetrahymena. Recommends this experiment for introducing students to microscope use. (YDS)

Describes a biology unit designed so that students pose their own questions and perform experiments to answer these questions. Plasmodial slime mold is employed as the focus of the study with background information about the mold provided. (DDR)

Describes a laboratory project for first-year biology students that examines competition among various cellular slime molds. After a brief introduction to the topic of competition and basic life history information about cellular slime molds, students choose a question and design original experiments to seek an answer. (Author/AIM)

Describes an experimental project that uses plant tissue culture techniques to examine cell differentiation in the carrot. Allows students to gain experience in some important techniques and to explore fundamental questions about cell differentiation. (DDR)

Uses Dictyostelium discoideum to aid in introducing cell differentiation to students. Students engage in a laboratory exercise that allows them to investigate the means by which embryonic cells choose developmental pathways. (ZWH)