135 reputation
5
bio website none
location Germany
age 29
visits member for 1 year, 6 months
seen 2 days ago

2d
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.
Feb
9
asked Why can white hairs get dark again?
Dec
20
awarded  Editor
Dec
20
revised Does amylolysis occur in vegetables if stored under 0 Celsius?
made clear that the vegetable is supposed to be frozen solid
Dec
20
comment Does amylolysis occur in vegetables if stored under 0 Celsius?
@Chris what do you mean by "set free the enzymes"? Does this mean that they will start converting the starch upon thawing independent of ambient temperature, because they are free now? I am afraid my mental model of the whole process is very incomplete. You will certainly break cell walls, this is very noticeable with thawed vegetables.
Dec
20
comment Does amylolysis occur in vegetables if stored under 0 Celsius?
@Chris interesting. I thought that maybe my question is too silly to ask, and half expected to get an answer saying "once the cell plasma is frozen, all biological processes cease because enzymes, hormones etc. can't move around".
Dec
19
asked Does amylolysis occur in vegetables if stored under 0 Celsius?
Sep
28
comment Can a chicken's lard become liquid depending on its diet?
@AlanBoyd I have read it as the explanation to why saturated fats are unhealthy: the cell walls membranes of the eater become stiffer and less flexible by incorporating molecules made with saturated instead of unsaturated fatty acids. I don't remember my sources, they were some kind of popular science, not peer-reviewed literature, so it is possible that they were wrong, or that they were oversimplified enough to give me a wrong understanding of what is actually happening.
Sep
25
asked Can a chicken's lard become liquid depending on its diet?
Jun
30
accepted Does osmosis occur when we have two different substances?
Jun
30
comment Does osmosis occur when we have two different substances?
To make sure I understand your answer: you are saying that if we have a high concentration of B on the right, and low concentration of A on the left, water will flow from left to right?
Jun
29
awarded  Student
Jun
29
asked Does osmosis occur when we have two different substances?
Jun
29
awarded  Scholar
Jun
29
accepted What is a “tool strain”?
Mar
11
comment What is a “tool strain”?
For what it is worth, she convinced me that "tool strains" and "recombinase strains" are synonyms, and that there are other, unrelated types of strains, like "reporter strains", GE-strains without recombinase, and non-GE strains which may have spontaneous diseases like A/J, or be healthy like FVB/N. Then I found examples of reporter strains having recombinase and concluded that my understanding is wrong. Still don't know whether a strain is considered a "tool strain" in the context of a certain experiment, or whether it is a property of the strain itself.
Mar
11
comment What is a “tool strain”?
There are no instructions. I am trying to elicit requirements from a single key user who doesn't "get" set theory. She is talking about several types of tumor models and animal strains, and when she tells me of model types A and B, she is not capable of telling me whether A is a subtype of B, B a subtype of A, both are synonyms, or unrelated. Because she is always thinking in terms of concrete data, she cannot generalize it. And when I try to pry it out with focused questions, she starts contradicting herself. Googling has helped a lot, but with the tool strains, I hit a wall.
Mar
11
awarded  Citizen Patrol