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 …
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 that, the …
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 …
Why deoxyribose for DNA and ribose for RNA? - Biology Stack Exchange
Dec 12, 2014 · Why is DNA made out of deoxyribose and RNA made of ribose? Why can't they both use ribose or deoxyribose? I think that the deoxyribose gives an advantage in storing genes, the job of …
Are there organisms with fewer than 1000 neurons?
Mar 24, 2017 · I'm developing neural networks comprised of just 3 to 10 layers of virtual neurons and I'm curious to know if there are any insect brains out there with fewer than a thousand neurons? Are …
How old is this Kodiak bear? - Biology Stack Exchange
Sep 3, 2025 · Hmmm, not sure that this is the right site, or that any SE site is the right one for this. Image is from 2006 apparently. Looks like an adult, so at least 5 years old at the time. I don't know …
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 …
Do blood cells immediately die after leaving the body?
Dec 20, 2018 · Blood cells do not die immediately because they still have some amount of nutrients in them that they can use until it finishes. They only die when they lose their source of nutrients after …
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 …
How can we differentiate between respiration and breathing?
Apr 26, 2015 · I am a student of 10th grade, and I eagerly want to learn biology. What is the difference between respiration and breathing?