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Biology Undergraduate Major (BS, HBS)

  • Explain and apply the fundamental concepts of the biological sciences, including inquiry in these four areas: PO1-A Cell Biology and Biochemistry; PO1-B Molecular Biology and Genetics; PO1-C Organismal Biology; and PO1-D Ecology and Evolution.
  • Explain and apply the fundamental concepts in cell biology and biochemistry.
  • Explain and apply the fundamental concepts in molecular biology and genetics.
  • Explain and apply fundamental concepts in organismal biology.
  • explain and apply fundamental concepts in population genetics, evolution and ecology.
  • Apply the process of science through three different aspects. 
  • Access primary literature, identify relevant works for a particular topic, and evaluate the scientific content of these works.
  • Formulate testable hypotheses based on observation, gather data to address these hypotheses and analyze those data to assess the degree to which their hypothesis is supported.
  • Employ fundamental quantitative and statistical principles to present and critique scientific findings.
  • Communicate scientific information through effective formal and informal writing and speaking in a format used by practicing scientists.
  • Integrate and analyze information across levels of organization ranging from biochemistry and molecular biology to ecosystems within the biological sciences to formulate arguments and critically evaluate scientific claims. 
  • Conduct background research and apply fundamental biological science principles to make informed decisions on socio-scientific issues.

Students in the Biology major must complete BI 221BI 222 and BI 223 (or the honors version of this series) with a C– or better to continue on to upper-division Biology (BI) and Zoology (Z) coursework. Students must also complete CH 231/CH 261CH 232/CH 262 or CH 233/CH 263 and CH 331 and CH 332 with a C– or better to continue on to upper-division Chemistry (CH) coursework.

Students majoring in Biology cannot seek a dual or double major in Biochemistry and Biophysics, Biochemistry and Molecular Biology, BioHealth Sciences, Botany, Microbiology or Zoology.

Declaring an option can modify the statistics and elective areas of the major. For further information, see MyDegrees or the Integrative Biology website.

Course List
Code Title Credits
Biology Core Courses  
Biology Seminars  
BI 197 PROFESSIONAL DEVELOPMENT I: HEALTH PROFESSIONS 1
or BI 198 PROFESSIONAL DEVELOPMENT I: BIOLOGY AND ZOOLOGY
BI 298 PROFESSIONAL DEVELOPMENT FOR BIOLOGISTS II 1
Baccalaureate Core Communications  
COMM 111 *PUBLIC SPEAKING 3
Baccalaureate Core Writing II  
WR 327 *TECHNICAL WRITING 3
or WR 362 *SCIENCE WRITING
Mathematics and Statistics Core  
MTH 251
MTH 252
*DIFFERENTIAL CALCULUS
and INTEGRAL CALCULUS
8
or MTH 227
MTH 228
*CALCULUS AND PROBABILITY FOR THE LIFE SCIENCES I
and CALCULUS AND PROBABILTITY FOR THE LIFE SCIENCES II
ST 351 INTRODUCTION TO STATISTICAL METHODS 4
ST 352 INTRODUCTION TO STATISTICAL METHODS 1 4-8
or ST 411
ST 412
METHODS OF DATA ANALYSIS
and METHODS OF DATA ANALYSIS
Chemistry Core  
CH 231
CH 261
GENERAL CHEMISTRY
and *LABORATORY FOR CHEMISTRY 231
5
CH 232
CH 262
GENERAL CHEMISTRY
and *LABORATORY FOR CHEMISTRY 232
5
CH 233
CH 263
GENERAL CHEMISTRY
and *LABORATORY FOR CHEMISTRY 233
5
CH 331
CH 332
CH 337
ORGANIC CHEMISTRY
and ORGANIC CHEMISTRY
and ORGANIC CHEMISTRY LABORATORY
12
BB 450
BB 451
GENERAL BIOCHEMISTRY
and GENERAL BIOCHEMISTRY
7
Biological Sciences Core  
These courses are arranged in the order they are generally taken:  
BI 221
BI 222
BI 223
*PRINCIPLES OF BIOLOGY: CELLS
and *PRINCIPLES OF BIOLOGY: ORGANISMS
and *PRINCIPLES OF BIOLOGY: POPULATIONS
12
BI 370 ECOLOGY 3
BI 311 GENETICS 4
BB 314 CELL AND MOLECULAR BIOLOGY 4
BI 445 EVOLUTION 3
MB 302 GENERAL MICROBIOLOGY 3
MB 303 GENERAL MICROBIOLOGY LABORATORY 2
Senior Biology Major Field Test  
Students are required to take a comprehensive, two-hour Biology Major Field Test in their final OSU term (or spring term if they will graduate in summer):  
BI 498 SENIOR BIOLOGY FIELD TEST 0
Electives 2  
Biology and Society  
Select one BCC course from the following or complete an option: 3-4

AEC 351

*NATURAL RESOURCE ECONOMICS AND POLICY  

AEC 352/ECON 352

*ENVIRONMENTAL ECONOMICS AND POLICY  

BB 220

*CANCER: SOCIETY'S MALIGNANT SHADOW  

BB 331

*INTRODUCTION TO MOLECULAR BIOLOGY  

BB 332

*MOLECULAR MEDICINE  

BI 175

*GENOMES, IDENTITIES AND SOCIETIES  

BI 301

*HUMAN IMPACTS ON ECOSYSTEMS  

BI 306

*ENVIRONMENTAL ECOLOGY  

BI 345

*INTRODUCTION TO EVOLUTION  

BI 347

*OCEANS IN PERIL  

BI 348

*HUMAN ECOLOGY  

BOT 324

*FUNGI IN SOCIETY  

FES 435/TOX 435

*GENES AND CHEMICALS IN AGRICULTURE: VALUE AND RISK  

FW 350

*ENDANGERED SPECIES, SOCIETY AND SUSTAINABILITY  

H 312

*HIV/AIDS AND STIS IN MODERN SOCIETY  

HSTS 417

*HISTORY OF MEDICINE  

MB 330

*DISEASE AND SOCIETY  

PHL 444

*BIOMEDICAL ETHICS  

Z 349

*BIODIVERSITY: CAUSES, CONSEQUENCES, AND CONSERVATION  
Physics or Computational and Quantitative Applications  
Select one of the following tracks or complete an option: 13-15
Track I Physics  

PH 201
PH 202
PH 203

*GENERAL PHYSICS
and *GENERAL PHYSICS
and *GENERAL PHYSICS (required for most human health professions)
 
Track II Computational and Quantitative Applications  

BDS 211
BB 345

USE AND ABUSE OF DATA: CRITICAL THINKING IN SCIENCE
and PYTHON FOR MOLECULAR BIOLOGISTS
 

or BDS 310
BDS 311

FOUNDATIONS OF BIOLOGICAL DATA SCIENCES
and COMPUTATIONAL APPROACHES FOR BIOLOGICAL DATA
Select two additional courses from the following:  

BB 485

APPLIED BIOINFORMATICS  

BDS 446

NETWORKS IN COMPUTATIONAL BIOLOGY  

BDS 472

ADVANCED COMPUTING FOR BIOLOGICAL DATA ANALYSIS  

BDS 475

COMPARATIVE GENOMICS  

BDS 477/BOT 477

POPULATION GENOMICS  

BDS 478

FUNCTIONAL GENOMICS  

BI 456

PHYLOGENETICS  

BI 481

BIOGEOGRAPHY  

BI 483

POPULATION BIOLOGY  

FW 433

POPULATION DYNAMICS FOR CONSERVATION  

GEOG 360

GISCIENCE I: GEOGRAPHIC INFORMATION SYSTEMS AND THEORY  

GEOG 361

QUANTITATIVE GEOSPATIAL ANALYSIS AND MODELING  

or GEOG 460

GIS AND SPATIAL DATA SCIENCE

OC 449

ECOLOGICAL THEORIES IN BIOLOGICAL AND FISHERIES OCEANOGRAPHY DATA  

ST 415

DESIGN AND ANALYSIS OF PLANNED EXPERIMENTS  

ST 431

SAMPLING METHODS  

Other courses by approval

 
Organismal Biology  
Select one course from the following or complete an option: 3-5

BI 427

PALEOBIOLOGY  

BOT 321

PLANT SYSTEMATICS  

BOT 416

AQUATIC BOTANY  

BOT 461

MYCOLOGY  

Z 361
Z 362

INVERTEBRATE BIOLOGY
and INVERTEBRATE BIOLOGY LABORATORY
 

Z 371
Z 372

VERTEBRATE BIOLOGY
and VERTEBRATE BIOLOGY LABORATORY
 

Z 422

COMPARATIVE/FUNCTIONAL VERTEBRATE ANATOMY  

Z 461

MARINE AND ESTUARINE INVERTEBRATE ZOOLOGY (taught at Hatfield Marine Science Center)  

Z 477

AQUATIC ENTOMOLOGY  
Physiology  
Select one course from the following or complete an option: 3-5

BI 331
BI 341
BI 332
BI 342

ADVANCED HUMAN ANATOMY AND PHYSIOLOGY
and ADVANCED HUMAN ANATOMY AND PHYSIOLOGY LABORATORY
and ADVANCED HUMAN ANATOMY AND PHYSIOLOGY
and ADVANCED HUMAN ANATOMY AND PHYSIOLOGY LABORATORY
 

BOT 331

PLANT PHYSIOLOGY  

BOT 488

ENVIRONMENTAL PHYSIOLOGY OF PLANTS  

Z 423

ENVIRONMENTAL PHYSIOLOGY  

Z 425

EMBRYOLOGY AND DEVELOPMENT  

Z 431

VERTEBRATE PHYSIOLOGY I  
Writing Intensive Course (WIC)  
Select one course from the following or complete an option: 3

BI 319

^THEORY, PRACTICE AND DISCOURSE IN THE LIFE SCIENCES  

BI 371

^ECOLOGICAL METHODS  

BI 373

^FIELD METHODS IN MARINE ECOLOGY  

MB 385

^EMERGING INFECTIOUS DISEASES AND EPIDEMICS  
Experiential Learning or Integrative Biology Elective  
Select one of the following two tracks or complete an option: 3-4
Track I Experiential Learning Credits  
Select any combination of three credits from the following:  

BI 309

TEACHING PRACTICUM (by approval)  

BI 401

RESEARCH AND SCHOLARSHIP (by approval)  

BI 406

PROJECTS: CURATORIAL ASSISTANT (by approval)  

BI 409

ADVANCED TEACHING PRACTICUM (by approval)  

BI 410

INTERNSHIP (by approval)  

OSU international internships (INTL credits) by approval

 
Track II Integrative Biology Course  
Select one course from the following:  

BI 333
BI 343

ADVANCED HUMAN ANATOMY AND PHYSIOLOGY
and ADVANCED HUMAN ANATOMY AND PHYSIOLOGY LABORATORY
 

BI 353

PACIFIC NORTHWEST COASTAL ECOSYSTEMS (taught at Hatfield Marine Science Center)  

BI 358

SYMBIOSES AND THE ENVIRONMENT  

BI 375

FIELD METHODS IN ECOLOGICAL RESTORATION (taught at OSU Cascades)  

BI 427

PALEOBIOLOGY (if not used above)  

BI 450

^MARINE BIOLOGY AND ECOLOGY (taught at Hatfield Marine Science Center) 3  

BI 454

EVOLUTIONARY GENOMICS  

BI 456

PHYLOGENETICS (if not used above)  

BI 481

BIOGEOGRAPHY (if not used above)  

BI 483

POPULATION BIOLOGY (if not used above)  

BI 485

MONSTER BIOLOGY  

BI 495

DISEASE ECOLOGY  

Z 350

ANIMAL BEHAVIOR  

Z 361
Z 362

INVERTEBRATE BIOLOGY
and INVERTEBRATE BIOLOGY LABORATORY (if not used above)
 

Z 365

BIOLOGY OF INSECTS  

Z 371
Z 372

VERTEBRATE BIOLOGY
and VERTEBRATE BIOLOGY LABORATORY (if not used above)
 

Z 423

ENVIRONMENTAL PHYSIOLOGY (if not used above)  

Z 425

EMBRYOLOGY AND DEVELOPMENT (if not used above)  

Z 432
Z 442

VERTEBRATE PHYSIOLOGY II
and VERTEBRATE PHYSIOLOGY LABORATORY
 

Z 438

BEHAVIORAL NEUROBIOLOGY  

Z 473

HERPETOLOGY  
Remaining Bacc Core and Electives 50-62
Total Credits 180

*

Baccalaureate Core Course (BCC)

^

Writing Intensive Course (WIC)

1

Alternative series is ST 351ST 411 and ST 412

2

Declaring an option will alter the elective categories, and all options automatically clear the upper-division science electives requirement. See the individual options or MyDegrees for details. Biology and Society electives also count as BCC

3

BI 450 (taught at Hatfield Marine Science Center) is by application only and may count for other major requirements

Degree plans are subject to change and the following is only an example of how students may complete their degree in four years. Students should consult their advisor to determine the best degree plan for them. Contact details for advisors can be found on the Academic Advising page.

Track I

Plan of Study Grid
First Year
FALL CREDITS
BI 197

or BI 198

PROFESSIONAL DEVELOPMENT I: HEALTH PROFESSIONS

or PROFESSIONAL DEVELOPMENT I: BIOLOGY AND ZOOLOGY

1
CH 231
CH 261
GENERAL CHEMISTRY
and *LABORATORY FOR CHEMISTRY 231
5
COMM 111 *PUBLIC SPEAKING 3
MTH 111

or MTH 112

*COLLEGE ALGEBRA

or *ELEMENTARY FUNCTIONS

4
HHS 231 *LIFETIME FITNESS FOR HEALTH 2
HHS 241 *LIFETIME FITNESS (or any PAC course) 1
  Credits 16
WINTER
CH 232
CH 262
GENERAL CHEMISTRY
and *LABORATORY FOR CHEMISTRY 232
5
MTH 112 *ELEMENTARY FUNCTIONS 4
WR 121 *ENGLISH COMPOSITION 4
Bacc Core 3
  Credits 16
SPRING
BI 298 PROFESSIONAL DEVELOPMENT FOR BIOLOGISTS II 1
CH 233
CH 263
GENERAL CHEMISTRY
and *LABORATORY FOR CHEMISTRY 233
5
MTH 251

or MTH 227

*DIFFERENTIAL CALCULUS

or *CALCULUS AND PROBABILITY FOR THE LIFE SCIENCES I

4
Bacc Core 3
Bacc Core 3
  Credits 16
Second Year
FALL
BI 221 *PRINCIPLES OF BIOLOGY: CELLS 4
CH 331 ORGANIC CHEMISTRY 4
MTH 252

or MTH 228

INTEGRAL CALCULUS

or CALCULUS AND PROBABILTITY FOR THE LIFE SCIENCES II

4
Bacc Core 3
  Credits 15
WINTER
BI 222 *PRINCIPLES OF BIOLOGY: ORGANISMS 4
CH 332 ORGANIC CHEMISTRY 4
ST 351 INTRODUCTION TO STATISTICAL METHODS 4
Bacc Core 3
  Credits 15
SPRING
BI 223 *PRINCIPLES OF BIOLOGY: POPULATIONS 4
CH 337 ORGANIC CHEMISTRY LABORATORY 4
ST 352 INTRODUCTION TO STATISTICAL METHODS 4
WR 327

or WR 362

*TECHNICAL WRITING

or *SCIENCE WRITING

3
  Credits 15
Third Year
FALL
BB 450 GENERAL BIOCHEMISTRY 4
PH 201 *GENERAL PHYSICS 5
BI 370

or BI 311
or BB 314

ECOLOGY

or GENETICS
or CELL AND MOLECULAR BIOLOGY

3-4
Bacc Core 3
  Credits 15-16
WINTER
BB 451 GENERAL BIOCHEMISTRY 3
PH 202 *GENERAL PHYSICS 5
BI 311

or BI 370
or BB 314

GENETICS

or ECOLOGY
or CELL AND MOLECULAR BIOLOGY

4
Bacc Core 3
  Credits 15
SPRING
PH 203 *GENERAL PHYSICS 5
BB 314

or BI 311
or BI 370
or BI 445

CELL AND MOLECULAR BIOLOGY

or GENETICS
or ECOLOGY
or EVOLUTION

4
Organismal Biology, Biology and Society, Physiology or Writing Intensive Course 3-4
Bacc Core 3
  Credits 15-16
Fourth Year
FALL
BI 445

or BI 311
or BI 370
or BB 314

EVOLUTION

or GENETICS
or ECOLOGY
or CELL AND MOLECULAR BIOLOGY

3
MB 302 GENERAL MICROBIOLOGY 3
MB 303 GENERAL MICROBIOLOGY LABORATORY 2
Organismal Biology, Biology and Society, Physiology or Writing Intensive Course 3-4
Elective 4
  Credits 15-16
WINTER
Organismal Biology, Biology and Society, Physiology or Writing Intensive Course 3-4
Experiential Learning or Integrative Biology Elective 3
Electives 8
  Credits 14-15
SPRING
BI 498 SENIOR BIOLOGY FIELD TEST 0
Electives 13
  Credits 13
  Total Credits 180-184

Track II

Plan of Study Grid
First Year
FALL CREDITS
BI 197

or BI 198

PROFESSIONAL DEVELOPMENT I: HEALTH PROFESSIONS

or PROFESSIONAL DEVELOPMENT I: BIOLOGY AND ZOOLOGY

1
BI 221 *PRINCIPLES OF BIOLOGY: CELLS 4
COMM 111 *PUBLIC SPEAKING 3
CH 231
CH 261
GENERAL CHEMISTRY
and *LABORATORY FOR CHEMISTRY 231
5
HHS 231 *LIFETIME FITNESS FOR HEALTH 2
HHS 241 *LIFETIME FITNESS (or any PAC course) 1
  Credits 16
WINTER
BI 222 *PRINCIPLES OF BIOLOGY: ORGANISMS 4
CH 232
CH 262
GENERAL CHEMISTRY
and *LABORATORY FOR CHEMISTRY 232
5
WR 121 *ENGLISH COMPOSITION 4
Bacc Core 3
  Credits 16
SPRING
BI 298 PROFESSIONAL DEVELOPMENT FOR BIOLOGISTS II 1
BI 223 *PRINCIPLES OF BIOLOGY: POPULATIONS 4
CH 233
CH 263
GENERAL CHEMISTRY
and *LABORATORY FOR CHEMISTRY 233
5
MTH 251

or MTH 227

*DIFFERENTIAL CALCULUS

or *CALCULUS AND PROBABILITY FOR THE LIFE SCIENCES I

4
Bacc Core 3
  Credits 17
Second Year
FALL
CH 331 ORGANIC CHEMISTRY 4
PH 201 *GENERAL PHYSICS 5
MTH 252

or MTH 228

INTEGRAL CALCULUS

or CALCULUS AND PROBABILTITY FOR THE LIFE SCIENCES II

4
Bacc Core 3
  Credits 16
WINTER
BI 311

or BB 314
or BI 370

GENETICS

or CELL AND MOLECULAR BIOLOGY
or ECOLOGY

3-4
CH 332 ORGANIC CHEMISTRY 4
PH 202 *GENERAL PHYSICS 5
Bacc Core 3
  Credits 15-16
SPRING
BI 311

or BB 314
or BI 370

GENETICS

or CELL AND MOLECULAR BIOLOGY
or ECOLOGY

3-4
CH 337 ORGANIC CHEMISTRY LABORATORY 4
PH 203 *GENERAL PHYSICS 5
WR 327

or WR 362

*TECHNICAL WRITING

or *SCIENCE WRITING

3
  Credits 15-16
Third Year
FALL
BB 450 GENERAL BIOCHEMISTRY 4
BI 311

or BB 314
or BI 370
or BI 445

GENETICS

or CELL AND MOLECULAR BIOLOGY
or ECOLOGY
or EVOLUTION

3-4
ST 351 INTRODUCTION TO STATISTICAL METHODS 4
Bacc Core 3
  Credits 14-15
WINTER
BB 451 GENERAL BIOCHEMISTRY 3
BI 311

or BB 314
or BI 370
or BI 445

GENETICS

or CELL AND MOLECULAR BIOLOGY
or ECOLOGY
or EVOLUTION

4
ST 352 INTRODUCTION TO STATISTICAL METHODS 4
Bacc Core 3
  Credits 14
SPRING
BI 311

or BB 314
or BI 370
or BI 445

GENETICS

or CELL AND MOLECULAR BIOLOGY
or ECOLOGY
or EVOLUTION

4
MB 302 GENERAL MICROBIOLOGY 3
MB 303 GENERAL MICROBIOLOGY LABORATORY 2
Biology and Society, Organismal Biology, Physiology or Writing Intensive Course 3-4
Bacc Core 3
  Credits 15-16
Fourth Year
FALL
Biology and Society, Organismal Biology, Physiology or Writing Intensive Course 3-4
Bacc Core 3
Electives 6-10
  Credits 14-15
WINTER
Biology and Society, Organismal Biology, Physiology or Writing Intensive Course 3-4
Experiential Learning or Integrative Biology Elective 3
Electives 6-10
  Credits 14-15
SPRING
BI 498 SENIOR BIOLOGY FIELD TEST 0
Biology and SocietyBiology and Society, Organismal Biology, Physiology or Writing Intensive Course 3-4
Electives 8-12
  Credits 14-15
  Total Credits 180-187

Track III

Plan of Study Grid
First Year
FALL CREDITS
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