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Molecular weight ratio

molecular weight ratio --> molecular weight

The sum of the atomic weight's of all the atoms constituting a molecule; the mass of a molecule relative to the mass of a standard atom, now 12C (taken as 12.000). Relative molecular mass (Mr) is the mass relative to the dalton and has no units.

See: atomic weight.

Synonym: molecular mass, molecular weight ratio, relative molecular mass.

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final concentration

... are usually given v/v(volume to volume ratio) or w/v(or weight to volume ratio). -The first is used for liquids ... since you know the amount of your solute and its molecular weight, you will have no problem calculating your ...

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by canalon
Wed Mar 23, 2011 10:05 pm
Forum: Molecular Biology
Topic: final concentration
Replies: 16
Views: 8708

Running SDS PAGE for the first time!

SDS should bind in ratio 1.4 g per 1 g of protein. Anyway, unless you don't know the molecular weight of the protein (what if you have mixture?), you can't calculate ...

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by JackBean
Mon Mar 08, 2010 5:44 pm
Forum: Molecular Biology
Topic: Running SDS PAGE for the first time!
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Views: 6177

Re: Serious cloning issues - gel extractions?

... degradation? The band is at too high a molecular weight so might be an artefact of some kind. On the other ... to hear that you are also getting a low 260/230 ratio... have you tried running the DNA back onto a gel ...

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by TaintedCherub
Wed Oct 21, 2009 3:46 pm
Forum: Molecular Biology
Topic: Serious cloning issues - gel extractions?
Replies: 23
Views: 23290

The Fiber Disease

... mRNA. Because mRNA is used for the cell’s molecular machinery to generate the protein, the ... as tissue engineering scaffolds. Low molecular weight (~20 kg/mol), amphiphilic, diblock polypeptides ... polypeptides allows for cellular proliferation whereas the same chemistry in the homopolymeric ...

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