Question 1

Which of the following techniques is most useful in determining if RNA polymerase has initiated transcription from the lac DNA template?

Accepted Answer

A) Southern analysis 
B) DNA fingerprinting 
C) run-off transcription assay 
D) DNA sequencing 
E) RACE

Question 2

Attenuation causes the length of the RNA molecules to be significantly extended.

Accepted Answer

A) True 
 B)False

Question 3

________ is a term used to describe a mechanism in which a protein controls it's own regulation.

Accepted Answer

The answer of ________ is a term used to describe...

Question 4

The following is an example of a cis-dominant mutation:
I-d O+ Z+ Y+ A-

Accepted Answer

A) True 
 B)False

Question 5

In the absence of glucose there will be a rapid accumulation of lactose in the following mutant:
I- Oc Z+ Y-
I- O+ Z+ Y-

Accepted Answer

A) True 
 B)False

Question 6

Regions of the 5'-UTRs of mRNAs that alter their structures to control gene expression are called _____________________.

Accepted Answer

The answer of Regions of the 5'-UTRs of mRNAs that...

Question 7

The identity of the following molecule is

Accepted Answer

A) galactose. 
B) lactose. 
C) glucose. 
D) cAMP. 
E) heparin.

Exam 7: Operons: Fine Control of Bacterial Transcription

Which of the following techniques is most useful in determining if RNA polymerase has initiated transcription from the lac DNA template?