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  1. metabolism - Why are 6 turns of the Calvin cycle needed to make one ...

    Oct 6, 2021 · I‘ve read that 6 turns of the Calvin cycle are required to make 1 glucose molecule. But, 3CO 2 and 3RuBP are used in one cycle and 6 triose phosphate is produced. Only 5 triose …

  2. terminology - Why do so many species from the Global Diversity ...

    Jan 5, 2026 · I'm comparing taxonomic databases to better understand species names. I've analyzed the list of species from the Catalogue of Life (COL), from Wikidata and from the Global Biodiversity …

  3. How old is this Kodiak bear? - Biology Stack Exchange

    Sep 3, 2025 · Apologies if this is off-topic, I couldn't think of a more relevant SE site to post this. Wikipedia has the following picture of a captive Kodiak bear in (presumably) a zoo in Germany. How …

  4. How do birds concentrate their urine? - Biology Stack Exchange

    Dec 7, 2023 · I don't know, but perhaps a better question is, "How do birds conserve water?" Their excrement is paste-like because it is both urine and fecal matter, and if you've ever owned fowl, you'll …

  5. Do animal muscles atrophy slower than humans?

    Feb 8, 2021 · No matter how much I excercise, my musculus maximus will be stronger than my abductor policis brevis by the virtue of being anatomically different musles. Why would you expect an animal …

  6. What exactly is a "gland"? - Biology Stack Exchange

    Feb 24, 2026 · Can someone please explain in simple ters the core, intuitive meaning of what is meant by the term " gland"? I have been learning a lot about the endocrine and exocrine gland …

  7. Odd bugs in terrarium. Harmful? - Biology Stack Exchange

    Nov 9, 2022 · I noticed these bugs in my terrarium, there is a springtail in the photo for size reference. I've seen 3 or 4 so far, I'm worried about it out-competing my springtails or possibly being a parasite ...

  8. What does genetically tractable strain mean? - Biology Stack Exchange

    Feb 21, 2021 · You've already basically got the idea of "genetically tractable": if we can readily modify an organism's genome using known techniques, then it's genetically tractable. That's a moving target, of …

  9. For how many generations does the average human have descendants?

    Aug 20, 2024 · From what pop science tends to tell us, it seems that the distribution of descendants humans have is very uneven. Mitochondrial Eve is the ancestor of all women in our present, …

  10. What is the status of the telomeres in HeLa cells?

    Aug 29, 2022 · What is unclear to me is why HeLa cells are that particular? My understanding is that the permanent based on (supposedly) the telomerase mechanism exists in all cancer cells, as well as in …