Because you want to study how botulinum toxin works, but you do not want to paralyze an animal, you decide to determine the effect of botulinum toxin on yeast. Botulinum toxin has a MW= 149323.05 and you have a 5ml stock bottle that contains 70% w/v botulinum toxin, 50mL of yeast growing in a liquid culture, and 25ml H2O. Your lab protocol performs treatments in 500µL samples.