1. The lac P site lies within the lac operon and isupstream of the genes that en

Question

1.   The lacP site lies within thelac operon and isupstream of the genes that encode for proteins involved in lactoseuptake and metabolism. Which of the following statements isTRUE of the lacPsite?

a.    It is the lac promoter site.

b.   It is where RNApolymerase binds.

c.    It is the site wheregenes are transcribed that encode proteins for metabolizinglactose.

d.   It is the lac promoter site where RNApolymerase binds.

e.    Is it the lac promoter site where genesare transcribed that encode proteins for metabolizinglactose.

Explanation / Answer

The answer is D. The lacP site is the lac promoter site andthe RNA polymerase binds to it. It regulates the transcription of the genes coding for thebreakdown of lactose.It is NOT THE SITE of transcription of genesof lactose breakdown. Hence the answer is D. hope it helps

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