2026-2027 Academic Catalog

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Biology - Organisms and Ecosystems Track, BS

General Requirements

To earn a degree, students must satisfy all requirements in each of the three areas below, in addition to their individual major requirements.

Program Requirements

  1. Students must complete a minimum of 36 BIOL credit hours 
  2. Students must complete a minimum of 15 credit hours in ancillary coursework. 
  3. Students must complete a minimum of 18 upper division (3000- level and above) BIOL credit hours.
  4. Students must earn a minimum grade of C- (1.7) in all courses that apply to the major and must achieve a minimum cumulative major GPA of 2.0. Courses taken using P+/P/F or S/U grading cannot apply to major requirements. Grades in courses that fulfill requirements for the major (including electives, required classes, and ancillary classes) are calculated in the major GPA.
  5. Students must complete a minimum of 18 upper division (3000-level and above) BIOL credit hours with CU Denver faculty and at least 6 credits must be at 4000-level or higher.

Program Restrictions, Allowances and Recommendations

  1. Upper division BIOL courses more than ten years old will not count automatically to the Major, but can be evaluated individually for their current relevance to the degree program through a petition process with the Department of Integrative Biology Curriculum Committee. Approval for courses older than ten years is not guaranteed so students may be required to update their knowledge by taking additional courses when past courses are outdated.    
  2. Undergraduate students may count up to six credit hours of independent study or internship (any combination of BIOL 3840 Independent StudyBIOL 3939 InternshipBIOL 4840 Independent Study, BIOL 4880 Directed Research) toward the upper-division Biology electives requirement in the major.
Complete the following required biology courses:22
Organisms to Ecosystems (Gen Bio)
Honors Organisms to Ecosystems (Gen Bio)
Organisms to Ecosystems Lab (Gen Bio)
Honors Organisms to Ecosystems Lab (Gen Bio)
Molecules to Cells (Gen Bio)
Honors Molecules to Cells (Gen Bio)
Molecules to Cells Lab (Gen Bio)
Honors Molecules to Cells Lab (Gen Bio)
Diversity of Life
Principles of Ecology
Ecology Laboratory
Introduction to Evolution
General Genetics
Introduction to Molecular Biology
Complete the following required ancillary classes:9
General Chemistry I
Majors General Chemistry I
Honors General Chemistry I
General Chemistry Laboratory I
Majors General Chemistry I Laboratory
Honors General Chemistry I Laboratory
General Chemistry II
Majors General Chemistry II
Honors General Chemistry II Lecture
General Chemistry Laboratory II
Majors General Chemistry II Laboratory
Honors General Chemistry II Laboratory
Choose one quantitative class from this list (certain biology careers may require more math, speak with your advisor):3-4
Biostatistics
Calculus I
Applied Statistics
Choose one writing intensive class from this list:3
Rhetorics of Medicine & Health
Technical Writing (also satisfies CLAS Communicative Skills requirement)
Writing in the Sciences (also satisfies CLAS Communicative Skills requirement)
Argumentation and Logic (also satisfies CLAS Humanities requirement)
Proposal and Grant Writing (also satisfies CLAS Humanities requirement)
Choose at least two upper division BIOL 4000 level classes from this list, that have not already been taken above, must be from UCD faculty:6
Infectious Disease Ecology
Virology
Molecular Biology Laboratory
Conservation Biology
Genomics and Bioinformatics
Mechanisms of Animal Behavior
Flora of Colorado
Microbial Genomics
Applied Microbial Ecology
Biogeography
Environmental Toxicology
Aquatic Ecology
Choose 8 credits from the following list that have not already been taken above:8
Introduction to Biotechnology
Behavioral Genetics
Introduction to Molecular Biology
Advanced Topics
Advanced Special Topics with Lab
Honors Human Physiology
Honors Human Physiology Lab
Honors Human Anatomy
Honors Human Anatomy Cadaver Lab
Virtual Human Anatomy Lab
Plant Diversity
Vertebrate Biology
Parasitology
General Cell Biology
General Microbiology
General Microbiology Lab
Developmental Biology
General Genetics
Independent Study
Internship
Advanced Biology Topics
Infectious Disease Ecology
Virology
Molecular Biology Laboratory
Conservation Biology
Climate Change Biology
Genomics and Bioinformatics
Mechanisms of Animal Behavior
Flora of Colorado
Microbial Genomics
Applied Microbial Ecology
Biogeography
Environmental Toxicology
Aquatic Ecology
Directed Research
Total Hours51-52

To learn more about the Student Learning Outcomes for this program, please visit our website.

To review the Degree Map for this program, please visit our website.