A lecture and laboratory study of living organisms, with emphasis on heterotrophic protists, plants, fungi and animals. Evolutionary theory and processes, morphology, taxonomy, physiology, ecology and diversity are covered in detail. Prerequisite: BIOL 120. Spring semester. Note: BIOL 120 and BIOL 121 are considered an introductory sequence for Biology majors in both the Biomedical and Organismal concentrations in Biology and are recommended for pre-professional students who desire an emphasis in biological sciences.