P ring

... is a heterocyclic aromatic organic compound similar to benzene and pyridine, containing two nitrogen atoms at positions 1 and 3 of the six-member ring. A purine is a heterocyclic aromatic organic compound, consisting of a pyrimidine ring fused to an imidazole ring. Purines, including substituted ...

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... copy of the A subunit (part A), and five copies of the B subunit (part B), connected by a disulfide bond. The five B subunits form a five-membered ring that binds to GM1 gangliosides on the surface of the intestinal epithelium cells. The A1 portion of the A subunit is an enzyme that ADP-ribosylates ...

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... large "fields" or domains, the (true) bacteria and the Archaea or archaea bacteria. The genetic material in prokaryotes is one single, ring-shaped chromosome, while in eukaryotes it is in the form of rod-shaped chromosomes. Most bacteria have cell wall made in majority by peptidogylcans. ...

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Because there is no way for the environment to directly influence the genetic material. This doesn't seem to ring true. If so, how does any form of instinct, which is a environmental response, get passed on? Of course there are also secondary examples such as mate selection based ...

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... at http://www.talkorigins.org/faqs/faq-speciation.html, for example (which I probably should have linked last time). Or perhaps you might consider ring species. :) The first point I noted in the wiki discussion was, this example appears to be about variation within a species. Nobody as far as I ...

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