Biology 303 EXAM III
3. Lactose represses the synthesis of the repressor. 4. Transcription of the
structural genes is induced when lactose is present. 3. What is the function of
cAMP in regulation of the lac operon? 1. activates a repressor protein. 2.
activates an activator protein. 3. inactivates a repressor protein. 4. inactivates an
activator protein.