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Apr
23
awarded  Yearling
Apr
9
awarded  Excavator
Apr
9
comment Why are amino acids in biology homochiral?
Because I was bored, I found and added links to the citations from "Reasons for the occurrence of the twenty coded protein amino acids"
Apr
9
revised Why are amino acids in biology homochiral?
Added links to the citations from "Reasons for the occurrence of the twenty coded protein amino acids"
Apr
9
comment Is there any evolutionary advantage of selection of L-amino acid over D-amino acid?
There were some efforts to connect weak interaction and symmetry breaking in biomolecules. That is the most crazy-yet-still-vaguely-plausible thing I have ever heard. Well done
Mar
25
answered A good software for agent based modelling?
Jan
30
comment In a tumor, why hypoxic regions have access to glucose?
This is a great systems bio question. You could also take it a step back from cancer and ask something like "what are the absolute fluxes (input - output) of O2 and glucose in healthy tissue, and how does one affect the other?"
Jan
30
comment Why do mammals produce more carbon dioxide than insects?
Source and context, please. For example, it doesn't seem likely that a resting mammal will produce more CO2 than an insect running for its life. Could be, though
Jan
30
revised Do fish increase or decrease pH of aquarium water?
added 53 characters in body
Jan
29
revised Do fish increase or decrease pH of aquarium water?
deleted 4 characters in body
Jan
29
answered Do fish increase or decrease pH of aquarium water?
Jan
7
comment How do proteins perform their function
@Nathan Yes, the level of detail can be overwhelming, but modern science is capable of productively dealing with much of that detail. Remember that one of the ultimate goals of this type of work has always been to produce and control our own custom-made proteins. It's fiddly work. The lesson of the last 40 years of progress in this field is that the details matter, often in surprising and significant ways.
Jan
7
comment How do proteins perform their function
@Chris Your analogy is off by about 8 orders of magnitude in terms of the relative scale. Rather, it's like looking at all of the hundreds of gears, shafts, pistons, etc that make up a car's drivetrain in order to fully understand how it works. You don't just look at each of those parts in isolation, rather you try to characterize the network of their interactions.
Jan
5
comment How do proteins perform their function
@Chris Looking at the scale of atoms will not help understanding a molecular machine made of thousands of them. It does help, it's just really, really difficult.
Jan
5
answered How do proteins perform their function
Nov
10
revised Does soap kill human cells?
added 7 characters in body
Nov
10
comment “synapses grow closer together in order to decrease the distance”, is it true?
I think you're talking about Hebbian theory? My neuro professor used to summarize this as "Cells that fire together, wire together" (although apparently he was in fact quoting Carla Shatz).
Nov
10
comment Why are red blood cells considered to be cells?
I definitely agree with @Armatus about space being the likeliest explanation for the early loss of the nucleus. Also keep in mind that the total "nuclear flux" (and the processing load of the waste from that flux) would be the same whether the nuclei were lost early or lost late
Nov
10
revised Does soap kill human cells?
added 66 characters in body
Nov
10
revised Does soap kill human cells?
added 226 characters in body