#Question id: 170
#Unit 1. Molecules and their Interaction Relevant to Biology
Desmosine, an uncommon amino acid is derived from
#Question id: 171
#Unit 1. Molecules and their Interaction Relevant to Biology
An amino acid with two chiral carbon atoms
#Question id: 172
#Unit 1. Molecules and their Interaction Relevant to Biology
Which amino acid is least likely to participate in acid-base catalysis?
#Question id: 173
#Unit 1. Molecules and their Interaction Relevant to Biology
What is the net charge on the tripeptide Gly-Arg-Lys at pH 7? The table below gives the pKaʹs of the ionizable groups on the free amino acids.
#Question id: 174
#Unit 1. Molecules and their Interaction Relevant to 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.
#Question id: 175
#Unit 1. Molecules and their Interaction Relevant to Biology
The ionic charges associated with a protein molecule are ________.