

yousuf89
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describe the preparation of 500ml of 4.75% w/v aqueous ethanol (mm=46.1 g/mol)
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I know that: bromophenol blue – used as a marker since most proteins and nucleic acid are colorless. glycerol - It is a preservative and a weighing agent. but what's the purpose of SDS and tris base in SDS agarose gel electrophoresis
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Are u saying that red blood cell is one of the human cell that do not have entire DNA sequence genome to produce every protein type
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which human cells do not have entire DNA sequence genome to produce every protein type? I don't really understand what the question wants , does it mean which cells doesn't have a nucleus or something......
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Given the specific rotation of L- Alanine = + 1.8° ( 25° C), calculate the optical rotation (observed) of a 1.10 M solution of Alanine in water at 25° C in a 25cm polarimeter tube. Show all calculations I know the formula is Specific Rotation = observed rotation (deg) × 100 / Optical path length (dm) × concentration (g/100ml) I think I found that the concentration is 0.097999 g/mL and the optical path length is 2.5 dm but I'm little bit confused and I was absent on the class that was talking about this because I had a fever. can anyone help me?
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It's like the no of atom in a subtance, right? seriously, I'm really don't know how to do it? I really need it for my test revision
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An experimental alloy contained by copper and tantalum of the alloy was dissolved and analyzed gravimetrically. a) the copper was precipitated and weighed as CuO, a mass of 0.1739g was obtained. Calculate the %w/w Cu in the alloy. b) the tantalum was precipitated and weighed as Ta2O5, a mass 0.4748g was obtained. calculate the %w/w Ta in the alloy.
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what does - single-locus allele - upstream and downstream DNA primers - dna size marker mean?
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can u show me please or give me a link that have the structure?
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yeah, but what's does it look like and is L-Cysteine a R configuration?
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which places were recombinant DNA technology is useful and give reason?
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Can any one give me a stereochemical structure of L-Cysteine by using the Fischer convention and indicate whether it is the R or S configuration? Please!! I've searched every website for two days and no detail the L-Cysteine (well the things that I wanted).
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difference between "commercially sterile" and "axenic"?
yousuf89 posted a topic in Organic Chemistry
what's the difference between "commercially sterile" and "axenic"? -
general use of industrial fermentation ethanol
yousuf89 replied to yousuf89's topic in Science Education
I tried to do that, but I couldn't find a good answer