Pseudomonas sp. has a mass doubling time of 2.4 h when grown on acetate. The saturation constant using this substrate is 1.3 g/l (which is unusually high), and cell yield on acetate is 0.46 g cell/g acetate. If we operate a chemostat on a feed stream containing 38 g/l acetate, find the Maximum dilution rate?

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#Question id: 169

#Section 2: General Biology

 An octapeptide composed of four repeating glycylalanyl units has:

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#Question id: 170

#Section 2: General Biology

Desmosine, an uncommon amino acid is derived from

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#Question id: 171

#Section 2: General Biology

An amino acid with two chiral carbon atoms

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#Question id: 172

#Section 2: General Biology

Which amino acid is least likely to participate in acid-base catalysis?

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#Question id: 174

#Section 2: General Biology

What is the net charge on the dipeptide Arg-Pro at pH 9.0? The table below gives the pKaʹs of the ionizable groups on the free amino acids.

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#Question id: 175

#Section 2: General Biology

The ionic charges associated with a protein molecule are ________.