In a glucose-yeast extract medium, Lactococcus lactis has a maximum specific growth rate (um) of 1.23 h^-1. What would be the specific growth rate of this organism at steady state in a 4 litre reactor being fed at 2 litres per hour?

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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 ________.

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#Question id: 176

#Section 2: General Biology

A peptide has the sequence Glu–His–Trp–Ser–Gly–Leu–Arg–Pro–Gly. What is the net charge of the molecule at pH 3

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#Question id: 178

#Section 2: General Biology

Given the pKa values of different acidic sites in cysteine, the principal ionic form which will never exist at any pH