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Kaplan Qbank USMLE



Author8 Posts
  #1

Eukaryotic transcription: 199

A) is independent of the presence of upstream consensus sequences.
B) May involve a promoter located within the region transcribed rather than upstream
C) Requires a separate promoter region for reach of the three ribosomal RNAs transcribed
D) Requires that the entire gene be in the nucleosome form of chromatin
E) Is affected by enhancer sequences only if they are adjacent to the promoter


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  #2

wow these questions of urs are so tough,whats their source?

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  #3

d

  #4

They are from my school textbook. Yea biochem is a @#$%^.

Keepgoing, D is not correct, maybe come with an explanation to your choice.

Edited by new_n_lost on 05/23/07 - 11:09 AM. Reason: Not Allowed

___________________
There are many things in this world that can’t be changed no matter how hard you try. That’s why you must not hesitate when the time comes where you have to give it all you’ve got.

  #5

ok option a-->located upstream n is needed

b.same should be upstream

e..does not matter where enhacers is i mean upstream or downstream so wrong

thn left c which i think should be right now...gosh so confusing thankgod mle does not ask such yaky question...i hope they dont read this....sticking out tongue


  #6

C, because eukaryotic DNA is monocystronic (1 promoter for each gene), whereas prokaryotic DNA is polycystronic

  #7

yeah looks like C

  #8

Answer is B
RNA polymerase III uses an internal promoter.

A: RNA polymerase II activity involves the TATA and CAAT boxes
C: RNA polymerase I produces one transcript, which is later processed to yield three rRNAs
D: parts of the promoter are not in a nucleosome
E: enhancers may be thousands of bp away.

___________________
There are many things in this world that can’t be changed no matter how hard you try. That’s why you must not hesitate when the time comes where you have to give it all you’ve got.







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