1. Where stereoisomers of biomolecules are possible, only one is usually found in most organisms; for instance, only the L amino acids occur in proteins. What problems would occur if, for example, the amino acids in the body proteins of herbivores were in the L isomer form but the amino acids in most of the plants they fed upon were in the D isomer form? ( 1Pt ) 2. The charged form of the imidazole ring of histidine is believed to participate in a reaction catalyzed by an enzyme. At pH7 what is the probability that the imidazole ring will be charged? ( 1pt )