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posted by  UMich1344 on 11/3/2009 1:08:58 AM  |  status: Closed  |  Earned Karma: 5

Lactose Uptake and Metabolism - lacP Site

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General Biology N/A N/A N/A 11/5/2009 at 12:00:00 PM
Question Details:

1.    The lacP site lies within the lac operon and is upstream of the genes that encode for proteins involved in lactose uptake and metabolism.  Which of the following statements is TRUE of the lacP site?

a.     It is the lac promoter site.

b.    It is where RNA polymerase binds.

c.     It is the site where genes are transcribed that encode proteins for metabolizing lactose.

d.    It is the lac promoter site where RNA polymerase binds.

e.     Is it the lac promoter site where genes are transcribed that encode proteins for metabolizing lactose.

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posted by AmyC on 11/3/2009 4:22:39 AM  |  status: Live
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Response Details:
The answer is D.
The lacP site is the lac promoter site and the RNA polymerase binds to it.
It regulates the transcription of the genes coding for the breakdown of lactose.It is NOT THE SITE of transcription of genes of lactose breakdown.
Hence the answer is D.
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