An introduction to the process of science, evolutionary biology, ecology, and the basic biology of viruses, prokaryotes, and eukaryotes. Students required to take BIOL 123N cannot earn credit for BIOL 105N, BIOL 106N, BIOL 110N, BIOL 112N, or BIOL 117N. Prerequisites: Placement into ENGL 110C and qualifying Math SAT/ACT score, or qualifying score on the Math placement test, or completion of MATH 102M or higher, and BIOL 121N passed with a grade of C (2.0) or higher. Pre- or corequisite: BIOL 124N.