Question

Which of the following processes is not an example of allosteric regulation ? (a) Regulation of phosphofructokinase activity by frucotse 2, 6-bisphosphate (b) Inactivation of nitrogenase by ADP ribosylation (c) Regulation of the lac operon by allolactose in E.coli (d) Catabolite repression by CAP in E.coli​

Answer 1

Answer:

c)REGULATION OF THE LAX PORRAN BY ALLOLASTOSE IN E. COLI

Answer 2

Catabolite repression is positive control of the lac operon. The effect is an increase in the rate of transcription. In this case, the CAP protein is activated by cAMP to bind to the lac operon and facilitate the binding of RNA polymerase to the promoter to transcribe the genes for lactose utilization.