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Many prokaryotes that are easily cultured in the lab are human or animal pathogens. why would these species be more readily cultured than non-pathogenic prokaryotes?
a. Pathogenic prokaryotes are hardier than non-pathogenic prokaryotes.
b. Non-pathogenic prokaryotes require more supplements in their growth media.
c. Most of the necessary culture conditions could be inferred for pathogenic prokaryotes.
d. Pathogenic bacteria can grow as free bacteria, but non-pathogenic bacteria only grow as parts of large colonies.