Phenyl-methane-sulfonyl-fluoride (PMSF) inactivates serine proteases by binding covalently to the catalytic serine residue at the active site; this enzyme-inhibitor bond is not cleaved by the enzyme.  This is an example of what kind of inhibition?

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#Question id: 19039

#Part-A Aptitude & General Biotechnology

In chromatography, the stationary phase can be ___________ supported on a solid.

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#Question id: 11498

#Part-B Specialized Branches in Biotechnology

Pain receptors in the skin are typically classified as which of the following?

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#Question id: 14131

#Part-B Specialized Branches in Biotechnology

The suitable substitution matrix to align closely related sequences is

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#Question id: 19044

#Part-A Aptitude & General Biotechnology

Which of the following techniques would be most useful to identify as well as quantify the presence of a known impurity in a drug substance? 

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#Question id: 5241

#Part-A Aptitude & General Biotechnology

Genes a, b, and c are widely spaced in the bacterial genome. Transducing phage from an a+ b+ c+ bacterium were used to infect a culture of a- b- c- cells, and b+ transductants were selected. Which of the following best describes the predicted genotypes of these transductants?