Compare and contrast the roles of the lac operon inducer in bacteria and Gal3p in eukaryotes in the regulation of their respective systems.
a) Both act as repressors
b) Lac operon is inducible, while Gal3p is constitutive
c) Lac operon responds to lactose, while Gal3p responds to galactose
d) Gal3p inhibits transcription, while the lac operon activates it
