Microbial Physiology and structure Morphology Gram rods(pleomorphic on artificial media) Do not stain well except with special silver stain Culture: do not grow in ordinary lab media, even though they are aerobic organisms Require high concentration of cysteine and are inhibited by sodium ions and aromatic compounds BIOL 533 7 Lecture 14BIOL 533 7 Lecture 14 Microbial Physiology and Structure • Morphology – Gram— rods (pleomorphic on artificial media) • Do not stain well except with special silver stain – Culture: do not grow in ordinary lab media, even though they are aerobic organisms • Require high concentration of cysteine and are inhibited by sodium ions and aromatic compounds