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10
votes
1answer
981 views
Fish “coming back to life” after being frozen
I've encountered a clip on Youtube showing a goldfish thrown in liquid nitrogen and immediately after to normal water and swimming normally. In the explanation to the clip it says:
For everyone ...
5
votes
2answers
413 views
What would cause proteins to get stuck in the stacking layer of a SDS-Page gel
Typically when proteins aggregate, they will get stuck at the top of the well. However, we're seeing some protein aggregate in the stacking layer even when we're treating the loading volume with DTT.
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5
votes
1answer
168 views
Why do grapes not shrink when placed in strong sugar solution?
I tried an experiment. First, I placed grapes in pure water(hypotonic solution). The grapes burst because of endosmosis. Then, I placed new set of grapes in strong sugar solution(fully saturated) but ...
5
votes
0answers
46 views
Modern reference for Kropotkin's lazy bees
I have been reading through Peter Kropotkin's Mutual Aid: A Factor of Evolution and he mentions a curious fact about bees (bolding by me for emphasis):
predatory instincts and laziness continue to ...
4
votes
1answer
54 views
Productive turnover and generations in the fruit fly
I was reading about the Lenski experiments on the evolution of E. coli bacterium and Dr. Elders's experiments on the evolution of the guppy.
These two experiments absolutely fascinated me, and seemed ...
3
votes
1answer
63 views
Questions regarding ELISA
I have recently peformed an ELISA (Enzyme-linked immunosorbent assay), but I still have some questions, let me first outline what I did:
We had a number (20) of tubes containing fake 'bodily fluids' ...
3
votes
1answer
62 views
Are there natural selection experiments that quantitatively agree with theoretical modeling?
Has anyone ever conducted an evolution experiment and quantitatively compared it to theory? For example, has anyone ever put bacteria in a million petri dishes filled with antibiotics and calculated ...
2
votes
2answers
59 views
What does “delineate” mean in this context?
I was reading a Scientific American story, “Controversial Spewed Iron Experiment Succeeds as Carbon Sink” (by David Biello), when I came across this sentence:
“The problem for scientists is that ...
1
vote
1answer
40 views
How difficult is to renature a protein?
I know of Anfinsen's experiments and I'm aware that some denatured enzymes may regain their lost activity through the removal of the denaturant agent. What I'm unaware of is how rare is it for a ...
