Nitrogen (N) normally forms three covalent bonds with a valence of five. However, ammonium has four covalent bonds, each to a different hydrogen (H) atom (H has a valence of one). What do you predict to be the charge on ammonium?

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#Question id: 12729

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When the two antiparallel strands of DNA are held together partly by the weak forces between complementary bases and partly by hydrophobic interaction between adjacent , stacked base pairs termed as_____

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#Question id: 1654

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The low affinity FcγRII IgG receptor:

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#Question id: 1659

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Which of the following Fc receptors has the highest affinity?

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#Question id: 15275

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Affinity chromatography on oligo(dT)-cellulose columns, is used for eukaryotic mRNA extraction, instead of using oligo(dT)-cellulose we can also use

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#Question id: 16569

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Eukaryotic mRNA extraction, can be done by using which of the following columns in affinity chromatography 

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#Question id: 14435

#Biotechnology

Differential centrifugation separates the particle which is different in