#Question id: 128
#Unit 1. Molecules and their Interaction Relevant to Biology
Amino acids with non-ionizable side chains are zwitterions when they are ________.
#Question id: 129
#Unit 1. Molecules and their Interaction Relevant to Biology
Glycine is not a stereoisomer because
#Question id: 130
#Unit 1. Molecules and their Interaction Relevant to Biology
An amino acid with two chiral carbon atoms
#Question id: 131
#Unit 1. Molecules and their Interaction Relevant to Biology
The RS system of nomenclature describes
#Question id: 132
#Unit 1. Molecules and their Interaction Relevant to Biology
Proline is distinct among the 20 commonly found amino acids because
#Question id: 133
#Unit 1. Molecules and their Interaction Relevant to Biology
Tyrosine and tryptophan are less hydrophobic than phenylalanine because