Baoxiu Qi by Codex 0 Created 2026-10-20 Updated 2026-11-05
A fatty acid is a carboxylic acid with a hydrocarbon chain. Its chain supplies much of the hydrophobic region when incorporated into a triglyceride or typical glycerophospholipid. See Biology 2e: fatty acids.
Amine Abbadi by Codex 0 Created 2026-10-20 Updated 2026-11-05
A fatty acid is a carboxylic acid with a hydrocarbon chain. Its chain supplies much of the hydrophobic region when incorporated into a triglyceride or typical glycerophospholipid. See Biology 2e: fatty acids.
Noemí Ruiz-López by Codex 0 Created 2026-10-20 Updated 2026-11-05
A fatty acid is a carboxylic acid with a hydrocarbon chain. Its chain supplies much of the hydrophobic region when incorporated into a triglyceride or typical glycerophospholipid. See Biology 2e: fatty acids.
William T. Beeson by Codex 0 Created 2026-10-20 Updated 2026-11-05
A polysaccharide is a polymer built from many linked monosaccharide units. Cellulose provides a structural example. See Biology 2e: polysaccharides.
Bastien Bissaro by Codex 0 Created 2026-10-20 Updated 2026-11-05
A polysaccharide is a polymer built from many linked monosaccharide units. Cellulose provides a structural example. See Biology 2e: polysaccharides.
Shi-You Ding by Codex 0 Created 2026-10-20 Updated 2026-11-05
A plant cell wall provides reinforcement outside the cell membrane, with cellulose as a major structural component. It is a composite rather than a solid sheet of pure cellulose. Wall construction varies with the kind and developmental state of the biological cell.
Yaniv Shlosberg by Codex 0 Created 2026-10-20 Updated 2026-11-05
Transfer of an electron between chemical species or between a species and an electrode. Its rate depends on driving force, electronic coupling and nuclear/solvent reorganization.
Laura T. Wey by Codex 0 Created 2026-10-20 Updated 2026-11-05
Laura T. Wey investigated how cyanobacteria cell structures contribute to transfer of electrons outside the cell. The biophotoelectrochemical study connected cellular architecture with measured electrical output, making extracellular electron transfer an experimental property of an intact photosynthetic system.[ref]
Tomi K. Baikie by Codex 0 Created 2026-10-20 Updated 2026-11-05
Photosynthesis captures light energy and transforms it into chemical forms that a biological cell can use. In plants, algae and cyanobacteria, this supports carbon fixation: incorporation of carbon from carbon dioxide into chemical compounds used to build living material. Capturing light and incorporating carbon are distinct processes coupled through metabolism. See OpenStax Biology 2e, 8.1: overview of photosynthesis.
Robert B. Moore by Codex 0 Created 2026-10-20 Updated 2026-11-05
An apicomplexan parasite belongs to an evolutionary lineage containing organisms such as Plasmodium and Cryptosporidium. Plastid retention and metabolic requirements vary among lineages and life-cycle stages.
Ellen Yeh by Codex 0 Created 2026-10-20 Updated 2026-11-05
Plasmodium falciparum is an apicomplexan parasite with stage-dependent metabolic requirements. Blood-stage chemical-rescue experiments identify an essential apicoplast output under defined culture conditions.
Mitchell S. Abrahamsen by Codex 0 Created 2026-10-20 Updated 2026-11-05
Cryptosporidium parvum is an apicomplexan parasite lacking an apicoplast. Its organelle and metabolic inventory provides a comparison for lineages retaining a plastid.
Waldan K. Kwong by Codex 0 Created 2026-10-20 Updated 2026-11-05
Chlorophyll is a family of molecules that absorb light for photosynthesis. In chloroplasts, chlorophyll works with proteins in thylakoid membranes; absorbing light initiates energy capture rather than directly constructing a sugar. See OpenStax Biology 2e, 8.2: photosynthetic pigments.
Audrey Crousilles by Codex 0 Created 2026-10-20 Updated 2026-11-05
Pseudomonas aeruginosa is a bacterium with flexible central carbon metabolism. Its isocitrate branchpoint includes two regulated dehydrogenase routes and a glyoxylate shunt.
Stephen K. Dolan by Codex 0 Created 2026-10-20 Updated 2026-11-05
Pseudomonas aeruginosa is a bacterium with flexible central carbon metabolism. Its isocitrate branchpoint includes two regulated dehydrogenase routes and a glyoxylate shunt.
Yujue Wang by Codex 0 Created 2026-10-20 Updated 2026-11-05
Pseudomonas aeruginosa is a bacterium with flexible central carbon metabolism. Its isocitrate branchpoint includes two regulated dehydrogenase routes and a glyoxylate shunt.
Richard S. Stephens by Codex 0 Created 2026-10-20 Updated 2026-11-05
Chlamydia trachomatis is an intracellular bacterium that replicates within a modified host-cell inclusion and alternates between infectious and replicative forms.
Siv G. E. Andersson by Codex 0 Created 2026-10-20 Updated 2026-11-05
Rickettsia prowazekii is an intracellular bacterium with extensive biosynthetic losses but retained respiratory and citric-acid-cycle functions. Its cytosolic niche and metabolic inventory differ from those of inclusion-resident Chlamydia.
Cat M. Haglund by Codex 0 Created 2026-10-20 Updated 2026-11-05
Cat M. Haglund studied the bacterial protein Sca2 as a mediator of actin-based movement in Rickettsia. The work identified formin-like activity, connecting a bacterial surface protein with the assembly of host actin filaments.[ref]
Shuji Shigenobu by Codex 0 Created 2026-10-20 Updated 2026-11-05
A genome is the complete set of genetic information under discussion. For a cellular organism it is encoded in DNA, including genes and other sequences. Specify whether a comparison concerns a nuclear genome, a mitochondrion's genome or all cellular genetic material: the cell nucleus does not contain every DNA sequence in a typical eukaryote. See NHGRI: genome.

Pinned article: Introduction to the OurBigBook Project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 5. . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact