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6
votes
2answers
60 views

Just how dangerous is ethidium bromide?

A common precaution for preparing EtBr-agarose gels is to add EtBr only after the gel solution has cooled somewhat, because EtBr is a dangerous mutagen. Supposedly, adding it to a hot liquid allows ...
2
votes
1answer
63 views

Fatty Acid Synthesis

I have a problem in my reasoning on the fatty acid synthesis in the human body. In the synthesis process you have this homodimer. So the synthesis starts with the transfer of a acetyl group from ...
4
votes
2answers
447 views

What makes teeth feel sticky after drinking Coca-Cola?

I asked some of my friends and we all agree that teeth feel funny after drinking Coca-Cola. Other similar soft drinks also cause this effect, but this one most noticeably. It's like teeth become ...
0
votes
1answer
59 views

Why prefer $MgSO_4$ over $MgCl_2$ in recipies [closed]

Many molecular biology recipes use MgSO4 (and not MgCl2). Is there indeed a preference? If so, why?
3
votes
1answer
51 views

How do fish tolerate pH changes in water?

I want to know how aquatic animals behave as a natural indicator of the acidity in lakes and rivers. How do they tolerate these pH change?
2
votes
1answer
79 views

How Do Acid and Base Loving Plants Get Enough PO4?

Acidic and Basic soils experience phosphate sequestration through binding with either calcium, aluminum, or iron. How do plant that thrive in acidic and basic soils obtain the necessary phosphate? ...