Introduction to microbial growth and metabolism, disease pathogenicity and control, epidemiology and human infections. Course Information: Credit for BIOS 250 is not given if the student has credit in BIOS 350. Intended for pre-nursing students and should not be taken by those who need BIOS 350. Prerequisite(s): BIOS 100 or BIOS 110; and Credit or concurrent registration in CHEM 130 or CHEM 230 or CHEM 232 or CHEM 115. Recommended background: BIOS 101 or BIOS 120.