# Biology 230

> Molecules & Cells

HAXcms is a file-based CMS: authored pages and metadata are stored as portable files, not locked into a database-only workflow.
The canonical site structure is `site.json`, represented in JSON Outline Schema (`id`, `parent`, `order`, `slug`, `location`, and `metadata`).
Use HAX CLI and ecosystem tooling to maintain human-authored content while keeping machine-readable outputs synchronized.
Managed files (feeds, search indexes, manifests, and this `llms.txt`) are generated artifacts and should be rebuilt by tooling.

## Core resources
- [site.json](https://oer.hax.psu.edu/sites/biol230-tutorials/site.json): Canonical site manifest and navigation tree in JSON Outline Schema format.
- [llms.txt](https://oer.hax.psu.edu/sites/biol230-tutorials/llms.txt): LLM-oriented guide to this site and its machine-readable resources.

## Pages
- [Biology 230](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/course-intro/index.md)
- [Subcelluar Architecture and Experimental Approaches to Cell Biology](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/subcelluar-architecture-experimental-approaches/index.md): Terms
- [Properties of Macromolecules I-Proteins](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/properties-macromolecules-I-proteins/index.md): Terms
- [Properties of Macromolecules II-Nucleic Acid, Polysaccharides, and Lipids](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/properties-macromolecules-II-nucleic-acids-polysaccharides-lipids/index.md): Terms
- [DNA and Chromosomes](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/dna-chromosomes/index.md): Terms 30-nm chromatin fiber centromere chromatin chromosome denaturation diploid euchromatin
- [DNA Replication and Repair](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/dna-replication-repair/index.md): Terms bidirectional replication chain termination method (dideoxy method) deamination deoxyribonucleotides (dATP, dCTP, dGTP, dTTP
- [Transcription](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/transcription/index.md)
- [Protein Translation](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/protein-translation/index.md)
- [Gene Expression](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/gene-expression/index.md)
- [Recombinant DNA Technology](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/recombinant-dna-technology/index.md)
- [Bioenergetics](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/bioenergetics/index.md): Terms bioenergetics endergonic endothermic energy (E) enthalpy (H) entropy (S) equilibrium
- [Enzyme Kinetics and Catalysis](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/enzyme-kinetics-catalysis/index.md)
- [Membrane Structure and Function](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/membrane-structure-function/index.md): Terms apoptosis
- [Passive and Active Transport](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/passive-active-transport/index.md): Terms active transport
- [Membrane Potential, Ion Transport and Nerve Impulse](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/membrane-potential-ion-transport-nerve-impulse/index.md): Terms acetylcholine
- [Glycolysis, Fermentation and the Citric Acid Cycle](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/glycolysis-fermentation-citric-acid-cycle/index.md)
- [Oxidation Phosphorylation](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/oxidation-phosphorylation/index.md): Terms ATP synthase coenzyme Q (CoQ) chemiosmotic coupling cristae cytochrome b-c complex cytochrome c cytochrome oxidase electron transport c
- [Photosynthesis](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/photosynthesis/index.md): Terms carbon fixation cycle (Calvin cycle) CF0 subunit CF1 subunit chlorophyll cyclic photophosphorylation cyt
- [Intracellular Compartments ER Golgi Complex](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/intracellular-compartments-er-golgi-complex/index.md): Terms anterograde cisternae cotranslational import endomembrane system lycosylate hydrolase hydroxyl
- [Intracellular Compartments Exocytosis, Endocytosis, and Lysosome](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/intracellular-compartments-exocytosis-endocytosis-lysosome/index.md): Terms apical autophagy basolateral bulk-phase endocytosis clathrin clathrin-coated pit COPI (coat co
- [Signal Transduction](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/signal-transduction/index.md): Terms adenylyl cyclase
- [The Cytoskeleton](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/cytoskeleton/index.md)
- [Mitosis, Cell Division and the Cell Cycle](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/mitosis-cell-division-cell-cycle/index.md)
- [The Organization of Cells in Tissue, The Extracelluar Matrix, Cell Junctions, Cell Adhesion](https://oer.hax.psu.edu/sites/biol230-tutorials/pages/organization-cells-tissue/index.md)

## Optional
- [Search index](https://oer.hax.psu.edu/sites/biol230-tutorials/lunrSearchIndex.json): Lunr corpus for quick full-text retrieval.
- [RSS feed](https://oer.hax.psu.edu/sites/biol230-tutorials/rss.xml): Site updates in RSS format.
- [Atom feed](https://oer.hax.psu.edu/sites/biol230-tutorials/atom.xml): Site updates in Atom format.
- [Sitemap](https://oer.hax.psu.edu/sites/biol230-tutorials/sitemap.xml): URL-level discovery map for the published site.
- [Agent skills](https://oer.hax.psu.edu/sites/biol230-tutorials/.well-known/agent-skills/index.json): Agent Skills discovery index (agentskills.io v0.2.0) listing skills that teach an agent how to read, author, audit, and remix this site.