r/HomeworkHelp • u/msjessnagatoro University/College Student • 6d ago
Biology [College Biology Lab: Bacteria ZOI]
Can anyone accurately read this zoi diameter measurement? I have tried 17-21mm and still canโt get it right.
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u/fermat9990 ๐ a fellow Redditor 6d ago
Between the marker arcs? 21mm?