Microbiology Major Requirements


PDF version of the Microbiology Undergraduate Major Handout (as of August 2021)
If you need this file in a more accessible format, please contact micro.grad@osu.edu.

Major Program Policies

  • The major consists of a minimum of 30 semester hours of courses approved by a microbiology advisor
  • A minimum grade of "C-" is required in every course counting toward the major
  • A maximum of 3 credits of coursework using the Satisfactory/Unsatisfactory (S/U) grading basis can be applied towards the major
  • A maximum of 3 credits of coursework at the 2000-level or 3000-level can be applied towards the major
  • Any student failing to obtain at least a C- after repeating a course must petition the Microbiology Department Curriculum Committee for permission to take the course a third time
  • A minimum grade point average of 2.00 (“C”) in the 30 credit hours counting towards the major is required for graduation

Please consult your assigned academic advisor for questions concerning: 

  • General Education (GE) Requirements for a BS degree  
  • Enrollment Windows and How to Schedule Classes in general
  • Adding and Dropping courses
  • Major Requirements
  • Most other general questions concerning your academic progress

Join the American Society for Microbiology Student Chapter at OSU! Contact President Claire Shu for questions.


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Major Requirements

  • Biology 1113 & 1114
  • Math 1151 or 1156 or 1140 & 1141
  • One of the following: Math 1152, Math 1157, Stat 1450, Stat 2450, or Stat 2480
  • Chemistry 1210, 1220, 2510, 2520, & 2540
  • Physics 1200 & 1201 or 1250 & 1251

Honors courses or more advanced courses can substitute when available

  • Biochemistry 4511
  • Microbiology 4100
  • Microbiology 4110
  • Microbiology 4120
  • Microbiology 4130
  • Microbiology 4140

Note: Any student seeking to have a microbiology course taken at another institution count for Microbiology 4100 must take the current Microbiology 4100 final lecture and lab exams and score at least a C-. Cases will be reviewed by the Microbiology Department Curriculum Committee before a decision is made.

Please also note that Microbiology 4000.01 or 4000.02 can not be used to substitute for Microbiology 4100. In general, substitutions are rarely - if ever - permitted.


Students can select a minimum of 9 credits from Group 1 or Group 2 courses:

  • Group 1: Any course offered by the department excluding 2200, 3798.05, 4000.01, & 4000.02
    • At least 3 credits of major electives must be earned from Group 1
  • Group 2: Additional selected biological and related sciences courses, including MICRBIO 2200 and 3798.05
  • See Major Handout for the complete list of Group 1 & 2 courses