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

    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 …

  2. Does food continue to stay sequential once it is inside my body?

    Feb 4, 2016 · In general, food is not kept in any particular sequential order. The stomach has a lot of smooth muscle which churns the food, very rapidly erasing any "order" to the food. Beyond …

  3. 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 …

  4. How many base codes are in DNA? Two or four? - Biology Stack …

    Nov 4, 2023 · Please explain what you mean by “base code”. It is not a term that means anything to me as a molecular biologist. And then how such a thing (or apparently things are “in DNA”. I …

  5. 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 …

  6. Calcium levels and nerve hyperexcitation - Biology Stack Exchange

    Why does lower blood calcium levels (or lower calcium levels in ECF) cause nervous hyperexcitaton? Why does it cause over stimulation of nerves and muscles and spasmic …

  7. 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 …

  8. What are the most common proteins inside cells, by mass?

    Sep 11, 2023 · I'm interested in the most abundant proteins inside cells by total mass of the protein (for example average for a whole human or for specific organs/tissues/cell lines). It is …

  9. 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 …

  10. What does genetically tractable strain mean? - Biology Stack …

    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 …