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location Germany
age 30
visits member for 1 year, 11 months
seen 9 mins ago

6m
comment Why does botulinum toxin seem to be more dangerous to humans than to other mammals?
From a food safety point of view, you don't get botulism from "carcasses" (meat). Common botulism vectors are plants, especially the parts growing around dirt (making homemade garlic oil is a really bad idea), and honey (a danger to infants, adults can stomach the spores and they can't form a colony of living bacteria in honey). So, if there are animals which come frequently into contact with botulism, they aren't vultures. Actually, I might have to write an answer about that...
11m
comment Why is green fur not a thing?
Polar bears have hollow hair shafts? Forget alpaca and mink, I want to knit polar bear yarn!
Sep
10
awarded  Nice Question
Sep
9
comment Does human eye lens have a magnification of its own?
What do you mean, "bigger/smaller than what they actually are"? What is your definition for seeing a thing in an absolute size, because I can think of none that makes sense? (And no, the human eye does not work like a camera, so saying that when the image of a 2 mm worm hits a 2 mm stretch of neurons in the retina you have "actual size" doesn't make sense, because it doesn't matter for your visual perception).
Sep
9
awarded  Good Question
Sep
8
awarded  Notable Question
Sep
8
awarded  Nice Question
Sep
8
awarded  Popular Question
Sep
8
awarded  Yearling
Sep
8
asked Do bacteria die of old age?
Jul
29
awarded  Curious
Jul
28
comment How do taenia form a species?
male and female taenia don't exist. A taenia is a hermaphrodite. So each proglottid can be like the other one, no difference in chromosomes needed.
Jul
28
comment How do taenia form a species?
Maybe I got something wrong, but in my understanding, a proglottid is not an animal, but a piece of the animal. The scolex buds asexually, passing its complete gene set to each proglottid. This means all proglottids of the same worm have the same set of genes. Now, a proglottid can fertilize itself or the neighbour proglottid, but it doesn't matter, because the genes of the mother proglottid and the father proglottid are still the same. This doesn't lead to new gene mixes. Or did I misunderstand the budding mechanism?
Jul
28
awarded  Commentator
Jul
28
comment Facultative Cannibalism?
@Remi.b the video you linked says that the oldest embryo eats the young ones as soon as its teeth are sharp enough. So not that much selection going on, except for the possibility that an older embryo with retarded development could be eaten by a younger sibling with normal development. But there isn't a bunch of embryos hunting each other at once.
Jul
28
asked How do taenia form a species?
May
22
asked Is there a superterm combining “animal line” and “cell line” in disease models?
Apr
21
comment Is there a protein in the eye that gets kinked by photons and shipped down to the liver to get un-kinked?
Luckily, the unkinking can happen outside of the liver, and much quicker. You know how, if somebody suddenly shines a flashlight into your eyes, you go blind for a couple of seconds after the light is gone? The reason is that all your protein storage in the eye is already activated and needs to be brought back to the unkinked state before you can see again. Imagine how it would be if this process required several heartbeats for transport to the liver, then an enzymatic process straightening the kinks, than shipping back: the blinding will be longer by at least one order of magnitude.
Apr
9
comment What makes teeth feel sticky after drinking Coca-Cola?
This question appears to be off-topic because it is about the physiological effects of food.
Apr
9
comment What makes teeth feel sticky after drinking Coca-Cola?
I see the question as wildly off topic. We are not a site for everything about food; we only focus on how to cook food, and all effects of the food on the body are off topic. The last rule mostly saves us from healthiness crackpots, but even if your question is not so likely to attract them, we still don't have the expertise to answer it.