After PHSX 220
Gateway: PHSX 220
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Department paths
Courses with no prerequisites inside the department that unlock the most downstream work.
Checking recent course schedules…
Each of these unlocks the largest share of downstream work on this map. Courses from other departments can appear here when they genuinely gate PHSX coursework.
Generated from University of Montana’s catalog, prerequisite, and concentration data. Spotted an error? Departments can adjust labels, ordering, and notes without a code change, so contact us.
Intro tiers at the top, advanced work below; arrows point from a prerequisite to the course it unlocks. Courses from other departments appear where they gate PHSX work. Click any course to see what it requires and unlocks without leaving this page; hovering lights up its neighbors. The lists on this page carry the same courses in text form.
Showing the 31 PHSX and feeder courses that have prerequisite links. 19 more PHSX courses have no recorded prerequisites. They are listed under Tracks below, not drawn as loose dots here.
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Upper-level clusters, grouped by the gateway that opens them.
Gateway: PHSX 220
Gateway: PHSX 215N
Gateway: PHSX 205N
The deepest prerequisite chains in PHSX. These are the routes that take the most semesters to climb.
8 courses deep, ending at PHSX 425
8 courses deep, ending at PHSX 444
7 courses deep, ending at PHSX 446
4 courses deep, ending at PHSX 207N
The concentrations and majors that build on PHSX, and how their requirements are structured. Expand a program to see which courses satisfy each group, then plan it in the Planner.
Lower-Division Physicschoose 1
Algebra- and Trigonometry-based Physics:; Calculus-based Physics (strongly recommended):
Lower-Division Astronomy Corechoose 1
Upper-Division Physicsall required
Complete all of the following courses:
Upper-Division Astronomy Coreall required
Complete all of the following courses:
Physics Electives2 required · verify with the official sheet
Complete three of the following courses:
Physics Laboratory Electivechoose 1
Math Requirementsall required
Complete all of the following courses:
Computer Science Requirementschoose 1
Lower-Division Physicschoose 1
Algebra- and Trigonometry-based Physics:; Calculus-based Physics (strongly recommended):
All ofall required
1 course from1 required
Lower-Division Physicschoose 1
Algebra- and Trigonometry-based Physics:; Calculus-based Physics (strongly recommended):
All ofall required
1 course from1 required
Lower-Division Physics Coreall required
Complete all of the following courses:
All ofall required
1 course from1 required
Lower-Division Courses in the Content Areas - Biology, Chemistry, Earth Sciences, and Physicschoose 1
Biology Content Courses; Complete all of the following courses:; Chemistry Content Courses; Complete all of the following courses:; Earth Sciences Content Courses; Complete all of the following courses:; Geoscience Elective - Complete 1 course in Geoscience (GEO); Physics Content Courses; Algebra- and Trigonometry-based Physics:; Calculus-based Physics:
1 course from1 required
Lower-Division Corechoose 1
Complete all of the following courses:
All ofall required
1 course from1 required
1 course from1 required
1 course from1 required
Physics Electivesall required
Complete two of the following courses:
1 course from1 required
Physics Electivechoose 1
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
Additional Upper-Division Courses Required for the Ecology & Organismal Biology Concentration1 required
Complete a minimum of 21 credits of upper-division BIOB, BIOE, BIOH, BIOL, BIOM, BIOO, or BCH course, with at least one course from each of the following subcategories. Other recommended courses include BCH 380 or BCH 480 -BCH 482. 21 total credits required.
Specialized Ecology Course Requirementchoose 1
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
Chemistrychoose 1
Introductory Chemistry (10 credits):; Advanced Chemistry (20 credits):
1 course from1 required
Physicschoose 1
Algebra- and Trigonometry-based Physics:; Calculus-based Physics:
Chemistrychoose 1
Introductory Chemistry (10 credits):; Advanced Chemistry (20 credits):
1 course from1 required
Physicschoose 1
Algebra- and Trigonometry-based Physics:; Calculus-based Physics:
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
1 course from1 required
Upper-Division Electives2 required · verify with the official sheet
Earth Science; Complete two of the following courses:; Water Science; Complete two of the following courses. At least one must be a Geosciences (GEO) course.; Climate Science; Complete 3 credits of the following courses:
Cognate Scienceschoose 1
Physics; Algebra- and Trigonometry-based Physics:; Calculus-based Physics:; Chemistry; Mathematics and Statistics; Complete all of the following courses:; Computer Science; Complete the following course:
1 course from1 required
1 course from1 required
1 course from1 required
Human and Biomedical 400-level Depth Courses2 required · verify with the official sheet
If BCH 480 /482 were taken, complete three of the following courses. If BCH 380 was taken, complete four of the following courses:
Chemistrychoose 1
Introductory Chemistry (10 credits):; Advanced Chemistry (20 credits):
1 course from1 required
Physicschoose 1
Algebra- and Trigonometry-based Physics:; Calculus-based Physics:
Additional Upper-Division Depth Courses in Microbiology2 required · verify with the official sheet
Complete 6 credits of the following courses. Infectious Disease electives may be counted here as long as the are not already applying to the Infectious Disease Elective requirement.
Chemistryall required
Physicschoose 1
Algebra- and Trigonometry-based Physics:; Calculus-based Physics:
All PHSX courses in the Montana catalog
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