How Does a Positive Regulator Affect Transcription by RNA Polymerase

question 38

Multiple Choice

How does a positive regulator affect transcription by RNA polymerase in prokaryotes?

• A)by allowing passage of the polymerase through an operator
• B)by interacting with RNA polymerase to increase the frequency of transcription initiation
• C)by causing the helix to unwind in the operator allowing easier initiation
• D)by making the transcription start site more exposed to the polymerase

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Definitions:

Unit-Elastic

A demand or supply situation where the percentage change in quantity demanded or supplied is equal to the percentage change in price, leading to no change in total revenue.

Price Elasticity

An indicator showing the sensitivity of the demanded quantity of a good to price adjustments, computed by the percentage change in demand relative to the percentage change in price.

Elastic Demand

A demand situation where the percentage change in the quantity demanded of a good or service is greater than the percentage change in its price.