Freezes

Why does water expand upon freezing? a. Dissolved air is released from the water, making bubbles in the ice that cause it to expand b. When water freezes, the covalent bonds lengthen and crystals form. c. When water freezes, it forms a crystalline structure in which the hydrogen bonds are perfectly ...

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... I bet Sp6 wouldn't like dNTPs one bit. ⋅ How's the buffer? Ours (possibly from the mMessage mMachine kit) forms a flocculate whenever it freezes that is difficult to resuspend - it has to be heated and vortexed. The reason I ask is that someone in our lab was spinning it down (!) and ...

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... A. Neurons C. Skin cells B. Liver cells D. Intestinal cells 15. Because water has a relatively low viscosity, it will A. become heavier as it freezes. B. allow substances to diffuse through it. C. have a low heat conductivity. D. change temperature easily. 16. With respect to the four levels ...

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... Some will store OK at -20C, but usually you store proteins at -80C if you must freeze them. The problem with freezing at -20C is that the sample freezes slowly (minutes to hours) allowing ice crystals to mingle with the protein phase. When ice thaws, it expands and that can damamge protein. Also, ...

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... in cold - I think the same rules apply than with many other molecular reactions, they get slower when it gets colder - naturyally when water freezes the activity pretty much stops. So I think viruses are capable of binding in cold, but far less efficiently. That in turn means, that the energy ...

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