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Course information comes from the public UCLA General Catalog. Requisites are read from UCLA’s published wording and can be incomplete or out of date — check the official catalog listing and your department adviser before you enroll.

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PHYSCI C226Biological Clocks

Physiological Science · 4 units · Graduate courses (200-299)

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Most organisms, including humans, exhibit daily rhythms in physiology and behavior. In many cases these rhythms are generated from within organisms and are called circadian rhythms. Biological basis of these daily rhythms or circadian oscillations. Exploration of molecular, cellular, and system-level organization of these timing systems. Temporal role of these variations in maintaining homeostatic mechanisms of body and impact on nervous system. Concurrently scheduled with course C126.

Letter grading.

When it runs

Not on the schedule for any of Fall 2025 through Spring 2027. UCLA publishes only that window, so this does not mean the course is gone — check the official listing.

Requisites

Official UCLA wording

Requisites: courses 111A and 111B, or M180A and M180B.

BruinTree reads · Prerequisite

needs reviewconfidence 0.75 · from text
one of
  • all of
    • PHYSCI 111A
    • PHYSCI 111B
  • all of
    • PHYSCI M180A
    • PHYSCI M180B
  • · mixed comma-level AND/OR in "courses 111A and 111B, or M180A and M180B" — grouping is a best reading

Report a problem

About PHYSCI C226. We read UCLA’s requisite wording by machine, and it gets things wrong.

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Requires

Everything that has to come before this course, not just the courses named in the requisite above.

PHYSCI C226

  • PHYSCI 111AFoundations in Physiological Science
    • PHYSCI 107Systems Anatomy
      • LIFESCI 7CPhysiology and Human Biologyanother path to it
      • PHYSICS 1APhysics for Scientists and Engineers: Mechanics1 more beneath
      • PHYSICS 5APhysics for Life Sciences Majors: Mechanics and Energyanother path to it
    • CHEM 14CStructure of Organic Moleculesanother path to it
    • LIFESCI 7ACell and Molecular Biology
    • PHYSICS 1BPhysics for Scientists and Engineers: Oscillations, Waves, Electric and Magnetic Fieldsanother path to it
    • CHEM 30AOrganic Chemistry I: Structure and Reactivityanother path to it
    • LIFESCI 7BGenetics, Evolution, and Ecology
      • LIFESCI 7ACell and Molecular Biologyanother path to it
  • PHYSCI 111BFoundations in Physiological Science
    • PHYSCI 111AFoundations in Physiological Scienceanother path to it
    • CHEM 14DOrganic Reactions and Pharmaceuticals
      • CHEM 14CStructure of Organic Moleculesanother path to it
    • CHEM 30BOrganic Chemistry II: Reactivity, Synthesis, and Spectroscopy
      • CHEM 30AOrganic Chemistry I: Structure and Reactivityanother path to it
  • PHYSCI M180ANeuroscience: From Molecules to Mind—Cellular and Systems Neuroscience
    • CHEM 14CStructure of Organic Molecules
      • CHEM 14BGeneral Chemistry for Life Scientists II6 more beneath
    • LIFESCI 7CPhysiology and Human Biologyanother path to it
    • PHYSICS 1BPhysics for Scientists and Engineers: Oscillations, Waves, Electric and Magnetic Fields
      • MATH 31BIntegration and Infinite Series1 more beneath
      • PHYSICS 1APhysics for Scientists and Engineers: Mechanicsanother path to it
      • MATH 32ACalculus of Several Variables1 more beneath
      • MATH 32BCalculus of Several Variables
    • CHEM 30AOrganic Chemistry I: Structure and Reactivity
      • CHEM 20BChemical Energetics and Change5 more beneath
    • PHYSICS 1BHPhysics for Scientists and Engineers: Oscillations, Waves, Electric and Magnetic Fields (Honors)
      • MATH 31BIntegration and Infinite Seriesanother path to it
      • PHYSICS 1APhysics for Scientists and Engineers: Mechanicsanother path to it
      • MATH 32ACalculus of Several Variablesanother path to it
      • PHYSICS 1AHPhysics for Scientists and Engineers: Mechanics (Honors)1 more beneath
      • MATH 33ALinear Algebra and Applications1 more beneath
    • PHYSICS 5CPhysics for Life Sciences Majors: Electricity, Magnetism, and Modern Physics
      • PHYSICS 5APhysics for Life Sciences Majors: Mechanics and Energy5 more beneath
  • PHYSCI M180BNeuroscience: From Molecules to Mind—Molecular and Developmental Neuroscience
    • LIFESCI 7CPhysiology and Human Biology
      • LIFESCI 7BGenetics, Evolution, and Ecologyanother path to it

4 direct requisites. Showing 39 courses over 3 levels; the branches marked with a count carry on past it. Every course here opens its own tree.

Unlocks

What this course is a requisite for, and what those courses lead to in turn.

No course in the catalog lists this as a requisite.